Repository: FontoXML/fontoxpath
Pull request #633 (2024-04-02 12:31:01)

Bump follow-redirects from 1.15.4 to 1.15.6
Bumps [follow-redirects](https://github.com/follow-redirects/follow-redirects) from 1.15.4 to 1.15.6.
<details>
<summary>Commits</summary>
<ul>
<li><a href="https://github.com/follow-redirects/follow-redirects/commit/35a517c5861d79dc8bff7db8626013d20b711b06"><code>35a517c</code></a> Release version 1.15.6 of the npm package.</li>
<li><a href="https://github.com/follow-redirects/follow-redirects/commit/c4f847f85176991f95ab9c88af63b1294de8649b"><code>c4f847f</code></a> Drop Proxy-Authorization across hosts.</li>
<li><a href="https://github.com/follow-redirects/follow-redirects/commit/8526b4a1b2ab3a2e4044299377df623a661caa76"><code>8526b4a</code></a> Use GitHub for disclosure.</li>
<li><a href="https://github.com/follow-redirects/follow-redirects/commit/b1677ce00110ee50dc5da576751d39b281fc4944"><code>b1677ce</code></a> Release version 1.15.5 of the npm package.</li>
<li><a href="https://github.com/follow-redirects/follow-redirects/commit/d8914f7982403ea096b39bd594a00ee9d3b7e224"><code>d8914f7</code></a> Preserve fragment in responseUrl.</li>
<li>See full diff in <a href="https://github.com/follow-redirects/follow-redirects/compare/v1.15.4...v1.15.6">compare view</a></li>
</ul>
</details>
<br />


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</details>

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bundlemon[bot]: <!-- bundlemon -->
## BundleMon

  
  
  
  
  
  
  
<details>
<summary>Unchanged files (2)</summary>

Status | Path | Size | Limits
:------------: | ------------ | :------------: | :------------:
:white_check_mark: | fontoxpath.esm.js<br/> | 78.18KB | -
:white_check_mark: | fontoxpath.js<br/> | 78.06KB | -
</details>



No change in files bundle size

Final result: :white_check_mark:

[View report in BundleMon website ➡️](https://app.bundlemon.dev/projects/6437c8f89a7cb205c434db8d/reports/660bfbcb28966cf69860523b)

---
<p align="center"><a href="https://app.bundlemon.dev/projects/6437c8f89a7cb205c434db8d/reports?branch=dependabot%2Fnpm_and_yarn%2Ffollow-redirects-1.15.6&resolution=all" target="_blank" rel="noreferrer noopener">Current branch size history</a> | <a href="https://app.bundlemon.dev/projects/6437c8f89a7cb205c434db8d/reports?branch=master&resolution=days" target="_blank" rel="noreferrer noopener">Target branch size history</a></p>
coveralls: 
[![Coverage Status](https://coveralls.io/builds/66661755/badge)](https://coveralls.io/builds/66661755)

coverage: 91.594%. remained the same
when pulling **8ef9ae27f49a54e785f35998535a492a2dcab51a on dependabot/npm_and_yarn/follow-redirects-1.15.6**
into **b3e36f89a070e9b8ac0360c3ef2c1febac071093 on master**.


Patch:
diff --git a/LICENSE.md b/LICENSE.md
index 6c89137c..fd39b98f 100644
--- a/LICENSE.md
+++ b/LICENSE.md
@@ -1,6 +1,6 @@
 MIT License
 
-Copyright (c) 2017 Fonto Group BV
+Copyright (c) 2017 Fonto Group BV, Martin Middel
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/demo/package-lock.json b/demo/package-lock.json
index 87ac88f0..20f4f387 100644
--- a/demo/package-lock.json
+++ b/demo/package-lock.json
@@ -1107,9 +1107,9 @@
 			"dev": true
 		},
 		"node_modules/ip": {
-			"version": "2.0.0",
-			"resolved": "https://registry.npmjs.org/ip/-/ip-2.0.0.tgz",
-			"integrity": "sha512-WKa+XuLG1A1R0UWhl2+1XQSi+fZWMsYKffMZTTYsiZaUD8k2yDAj5atimTUD2TZkyCkNEeYE5NhFZmupOGtjYQ==",
+			"version": "2.0.1",
+			"resolved": "https://registry.npmjs.org/ip/-/ip-2.0.1.tgz",
+			"integrity": "sha512-lJUL9imLTNi1ZfXT+DU6rBBdbiKGBuay9B6xGSPVjUeQwaH1RIGqef8RZkUtHioLmSNpPR5M4HVKJGm1j8FWVQ==",
 			"dev": true
 		},
 		"node_modules/is-arrayish": {
@@ -3642,9 +3642,9 @@
 			"dev": true
 		},
 		"ip": {
-			"version": "2.0.0",
-			"resolved": "https://registry.npmjs.org/ip/-/ip-2.0.0.tgz",
-			"integrity": "sha512-WKa+XuLG1A1R0UWhl2+1XQSi+fZWMsYKffMZTTYsiZaUD8k2yDAj5atimTUD2TZkyCkNEeYE5NhFZmupOGtjYQ==",
+			"version": "2.0.1",
+			"resolved": "https://registry.npmjs.org/ip/-/ip-2.0.1.tgz",
+			"integrity": "sha512-lJUL9imLTNi1ZfXT+DU6rBBdbiKGBuay9B6xGSPVjUeQwaH1RIGqef8RZkUtHioLmSNpPR5M4HVKJGm1j8FWVQ==",
 			"dev": true
 		},
 		"is-arrayish": {
diff --git a/package-lock.json b/package-lock.json
index 3adc5ab4..053e2f90 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
 	"name": "fontoxpath",
-	"version": "3.30.3",
+	"version": "3.32.0",
 	"lockfileVersion": 2,
 	"requires": true,
 	"packages": {
 		"": {
 			"name": "fontoxpath",
-			"version": "3.30.3",
+			"version": "3.32.0",
 			"license": "MIT",
 			"dependencies": {
 				"prsc": "4.0.0",
@@ -212,12 +212,12 @@
 			}
 		},
 		"node_modules/@babel/generator": {
-			"version": "7.22.15",
-			"resolved": "https://registry.npmjs.org/@babel/generator/-/generator-7.22.15.tgz",
-			"integrity": "sha512-Zu9oWARBqeVOW0dZOjXc3JObrzuqothQ3y/n1kUtrjCoCPLkXUwMvOo/F/TCfoHMbWIFlWwpZtkZVb9ga4U2pA==",
+			"version": "7.23.0",
+			"resolved": "https://registry.npmjs.org/@babel/generator/-/generator-7.23.0.tgz",
+			"integrity": "sha512-lN85QRR+5IbYrMWM6Y4pE/noaQtg4pNiqeNGX60eqOfo6gtEj6uw/JagelB8vVztSd7R6M5n1+PQkDbHbBRU4g==",
 			"dev": true,
 			"dependencies": {
-				"@babel/types": "^7.22.15",
+				"@babel/types": "^7.23.0",
 				"@jridgewell/gen-mapping": "^0.3.2",
 				"@jridgewell/trace-mapping": "^0.3.17",
 				"jsesc": "^2.5.1"
@@ -273,13 +273,13 @@
 			}
 		},
 		"node_modules/@babel/helper-function-name": {
-			"version": "7.22.5",
-			"resolved": "https://registry.npmjs.org/@babel/helper-function-name/-/helper-function-name-7.22.5.tgz",
-			"integrity": "sha512-wtHSq6jMRE3uF2otvfuD3DIvVhOsSNshQl0Qrd7qC9oQJzHvOL4qQXlQn2916+CXGywIjpGuIkoyZRRxHPiNQQ==",
+			"version": "7.23.0",
+			"resolved": "https://registry.npmjs.org/@babel/helper-function-name/-/helper-function-name-7.23.0.tgz",
+			"integrity": "sha512-OErEqsrxjZTJciZ4Oo+eoZqeW9UIiOcuYKRJA4ZAgV9myA+pOXhhmpfNCKjEH/auVfEYVFJ6y1Tc4r0eIApqiw==",
 			"dev": true,
 			"dependencies": {
-				"@babel/template": "^7.22.5",
-				"@babel/types": "^7.22.5"
+				"@babel/template": "^7.22.15",
+				"@babel/types": "^7.23.0"
 			},
 			"engines": {
 				"node": ">=6.9.0"
@@ -479,9 +479,9 @@
 			}
 		},
 		"node_modules/@babel/parser": {
-			"version": "7.22.16",
-			"resolved": "https://registry.npmjs.org/@babel/parser/-/parser-7.22.16.tgz",
-			"integrity": "sha512-+gPfKv8UWeKKeJTUxe59+OobVcrYHETCsORl61EmSkmgymguYk/X5bp7GuUIXaFsc6y++v8ZxPsLSSuujqDphA==",
+			"version": "7.23.0",
+			"resolved": "https://registry.npmjs.org/@babel/parser/-/parser-7.23.0.tgz",
+			"integrity": "sha512-vvPKKdMemU85V9WE/l5wZEmImpCtLqbnTvqDS2U1fJ96KrxoW7KrXhNsNCblQlg8Ck4b85yxdTyelsMUgFUXiw==",
 			"dev": true,
 			"bin": {
 				"parser": "bin/babel-parser.js"
@@ -517,19 +517,19 @@
 			}
 		},
 		"node_modules/@babel/traverse": {
-			"version": "7.22.20",
-			"resolved": "https://registry.npmjs.org/@babel/traverse/-/traverse-7.22.20.tgz",
-			"integrity": "sha512-eU260mPZbU7mZ0N+X10pxXhQFMGTeLb9eFS0mxehS8HZp9o1uSnFeWQuG1UPrlxgA7QoUzFhOnilHDp0AXCyHw==",
+			"version": "7.23.2",
+			"resolved": "https://registry.npmjs.org/@babel/traverse/-/traverse-7.23.2.tgz",
+			"integrity": "sha512-azpe59SQ48qG6nu2CzcMLbxUudtN+dOM9kDbUqGq3HXUJRlo7i8fvPoxQUzYgLZ4cMVmuZgm8vvBpNeRhd6XSw==",
 			"dev": true,
 			"dependencies": {
 				"@babel/code-frame": "^7.22.13",
-				"@babel/generator": "^7.22.15",
+				"@babel/generator": "^7.23.0",
 				"@babel/helper-environment-visitor": "^7.22.20",
-				"@babel/helper-function-name": "^7.22.5",
+				"@babel/helper-function-name": "^7.23.0",
 				"@babel/helper-hoist-variables": "^7.22.5",
 				"@babel/helper-split-export-declaration": "^7.22.6",
-				"@babel/parser": "^7.22.16",
-				"@babel/types": "^7.22.19",
+				"@babel/parser": "^7.23.0",
+				"@babel/types": "^7.23.0",
 				"debug": "^4.1.0",
 				"globals": "^11.1.0"
 			},
@@ -547,13 +547,13 @@
 			}
 		},
 		"node_modules/@babel/types": {
-			"version": "7.22.19",
-			"resolved": "https://registry.npmjs.org/@babel/types/-/types-7.22.19.tgz",
-			"integrity": "sha512-P7LAw/LbojPzkgp5oznjE6tQEIWbp4PkkfrZDINTro9zgBRtI324/EYsiSI7lhPbpIQ+DCeR2NNmMWANGGfZsg==",
+			"version": "7.23.0",
+			"resolved": "https://registry.npmjs.org/@babel/types/-/types-7.23.0.tgz",
+			"integrity": "sha512-0oIyUfKoI3mSqMvsxBdclDwxXKXAUA8v/apZbc+iSyARYou1o8ZGDxbUYyLFoW2arqS2jDGqJuZvv1d/io1axg==",
 			"dev": true,
 			"dependencies": {
 				"@babel/helper-string-parser": "^7.22.5",
-				"@babel/helper-validator-identifier": "^7.22.19",
+				"@babel/helper-validator-identifier": "^7.22.20",
 				"to-fast-properties": "^2.0.0"
 			},
 			"engines": {
@@ -2443,12 +2443,12 @@
 			"dev": true
 		},
 		"node_modules/axios": {
-			"version": "1.5.0",
-			"resolved": "https://registry.npmjs.org/axios/-/axios-1.5.0.tgz",
-			"integrity": "sha512-D4DdjDo5CY50Qms0qGQTTw6Q44jl7zRwY7bthds06pUGfChBCTcQs+N743eFWGEd6pRTMd6A+I87aWyFV5wiZQ==",
+			"version": "1.6.8",
+			"resolved": "https://registry.npmjs.org/axios/-/axios-1.6.8.tgz",
+			"integrity": "sha512-v/ZHtJDU39mDpyBoFVkETcd/uNdxrWRrg3bKpOKzXFA6Bvqopts6ALSMU3y6ijYxbw2B+wPrIv46egTzJXCLGQ==",
 			"dev": true,
 			"dependencies": {
-				"follow-redirects": "^1.15.0",
+				"follow-redirects": "^1.15.6",
 				"form-data": "^4.0.0",
 				"proxy-from-env": "^1.1.0"
 			}
@@ -2618,12 +2618,12 @@
 			}
 		},
 		"node_modules/braces": {
-			"version": "3.0.2",
-			"resolved": "https://registry.npmjs.org/braces/-/braces-3.0.2.tgz",
-			"integrity": "sha512-b8um+L1RzM3WDSzvhm6gIz1yfTbBt6YTlcEKAvsmqCZZFw46z626lVj9j1yEPW33H5H+lBQpZMP1k8l+78Ha0A==",
+			"version": "3.0.3",
+			"resolved": "https://registry.npmjs.org/braces/-/braces-3.0.3.tgz",
+			"integrity": "sha512-yQbXgO/OSZVD2IsiLlro+7Hf6Q18EJrKSEsdoMzKePKXct3gvD8oLcOQdIzGupr5Fj+EDe8gO/lxc1BzfMpxvA==",
 			"dev": true,
 			"dependencies": {
-				"fill-range": "^7.0.1"
+				"fill-range": "^7.1.1"
 			},
 			"engines": {
 				"node": ">=8"
@@ -3175,9 +3175,9 @@
 			"dev": true
 		},
 		"node_modules/concurrently": {
-			"version": "8.2.1",
-			"resolved": "https://registry.npmjs.org/concurrently/-/concurrently-8.2.1.tgz",
-			"integrity": "sha512-nVraf3aXOpIcNud5pB9M82p1tynmZkrSGQ1p6X/VY8cJ+2LMVqAgXsJxYYefACSHbTYlm92O1xuhdGTjwoEvbQ==",
+			"version": "8.2.2",
+			"resolved": "https://registry.npmjs.org/concurrently/-/concurrently-8.2.2.tgz",
+			"integrity": "sha512-1dP4gpXFhei8IOtlXRE/T/4H88ElHgTiUzh71YUmtjTEHMSRS2Z/fgOxHSxxusGHogsRfxNq1vyAwxSC+EVyDg==",
 			"dev": true,
 			"dependencies": {
 				"chalk": "^4.1.2",
@@ -4507,9 +4507,9 @@
 			}
 		},
 		"node_modules/fill-range": {
-			"version": "7.0.1",
-			"resolved": "https://registry.npmjs.org/fill-range/-/fill-range-7.0.1.tgz",
-			"integrity": "sha512-qOo9F+dMUmC2Lcb4BbVvnKJxTPjCm+RRpe4gDuGrzkL7mEVl/djYSu2OdQ2Pa302N4oqkSg9ir6jaLWJ2USVpQ==",
+			"version": "7.1.1",
+			"resolved": "https://registry.npmjs.org/fill-range/-/fill-range-7.1.1.tgz",
+			"integrity": "sha512-YsGpe3WHLK8ZYi4tWDg2Jy3ebRz2rXowDxnld4bkQB00cc/1Zw9AWnC0i9ztDJitivtQvaI9KaLyKrc+hBW0yg==",
 			"dev": true,
 			"dependencies": {
 				"to-regex-range": "^5.0.1"
@@ -4672,9 +4672,9 @@
 			}
 		},
 		"node_modules/follow-redirects": {
-			"version": "1.15.4",
-			"resolved": "https://registry.npmjs.org/follow-redirects/-/follow-redirects-1.15.4.tgz",
-			"integrity": "sha512-Cr4D/5wlrb0z9dgERpUL3LrmPKVDsETIJhaCMeDfuFYcqa5bldGV6wBsAN6X/vxlXQtFBMrXdXxdL8CbDTGniw==",
+			"version": "1.15.6",
+			"resolved": "https://registry.npmjs.org/follow-redirects/-/follow-redirects-1.15.6.tgz",
+			"integrity": "sha512-wWN62YITEaOpSK584EZXJafH1AGpO8RVgElfkuXbTOrPX4fIfOyEpW/CsiNd8JdYrAoOvafRTOEnvsO++qCqFA==",
 			"dev": true,
 			"funding": [
 				{
@@ -10690,12 +10690,12 @@
 			}
 		},
 		"@babel/generator": {
-			"version": "7.22.15",
-			"resolved": "https://registry.npmjs.org/@babel/generator/-/generator-7.22.15.tgz",
-			"integrity": "sha512-Zu9oWARBqeVOW0dZOjXc3JObrzuqothQ3y/n1kUtrjCoCPLkXUwMvOo/F/TCfoHMbWIFlWwpZtkZVb9ga4U2pA==",
+			"version": "7.23.0",
+			"resolved": "https://registry.npmjs.org/@babel/generator/-/generator-7.23.0.tgz",
+			"integrity": "sha512-lN85QRR+5IbYrMWM6Y4pE/noaQtg4pNiqeNGX60eqOfo6gtEj6uw/JagelB8vVztSd7R6M5n1+PQkDbHbBRU4g==",
 			"dev": true,
 			"requires": {
-				"@babel/types": "^7.22.15",
+				"@babel/types": "^7.23.0",
 				"@jridgewell/gen-mapping": "^0.3.2",
 				"@jridgewell/trace-mapping": "^0.3.17",
 				"jsesc": "^2.5.1"
@@ -10737,13 +10737,13 @@
 			"dev": true
 		},
 		"@babel/helper-function-name": {
-			"version": "7.22.5",
-			"resolved": "https://registry.npmjs.org/@babel/helper-function-name/-/helper-function-name-7.22.5.tgz",
-			"integrity": "sha512-wtHSq6jMRE3uF2otvfuD3DIvVhOsSNshQl0Qrd7qC9oQJzHvOL4qQXlQn2916+CXGywIjpGuIkoyZRRxHPiNQQ==",
+			"version": "7.23.0",
+			"resolved": "https://registry.npmjs.org/@babel/helper-function-name/-/helper-function-name-7.23.0.tgz",
+			"integrity": "sha512-OErEqsrxjZTJciZ4Oo+eoZqeW9UIiOcuYKRJA4ZAgV9myA+pOXhhmpfNCKjEH/auVfEYVFJ6y1Tc4r0eIApqiw==",
 			"dev": true,
 			"requires": {
-				"@babel/template": "^7.22.5",
-				"@babel/types": "^7.22.5"
+				"@babel/template": "^7.22.15",
+				"@babel/types": "^7.23.0"
 			}
 		},
 		"@babel/helper-hoist-variables": {
@@ -10894,9 +10894,9 @@
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 		},
 		"@babel/parser": {
-			"version": "7.22.16",
-			"resolved": "https://registry.npmjs.org/@babel/parser/-/parser-7.22.16.tgz",
-			"integrity": "sha512-+gPfKv8UWeKKeJTUxe59+OobVcrYHETCsORl61EmSkmgymguYk/X5bp7GuUIXaFsc6y++v8ZxPsLSSuujqDphA==",
+			"version": "7.23.0",
+			"resolved": "https://registry.npmjs.org/@babel/parser/-/parser-7.23.0.tgz",
+			"integrity": "sha512-vvPKKdMemU85V9WE/l5wZEmImpCtLqbnTvqDS2U1fJ96KrxoW7KrXhNsNCblQlg8Ck4b85yxdTyelsMUgFUXiw==",
 			"dev": true
 		},
 		"@babel/runtime": {
@@ -10920,19 +10920,19 @@
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 		"@babel/traverse": {
-			"version": "7.22.20",
-			"resolved": "https://registry.npmjs.org/@babel/traverse/-/traverse-7.22.20.tgz",
-			"integrity": "sha512-eU260mPZbU7mZ0N+X10pxXhQFMGTeLb9eFS0mxehS8HZp9o1uSnFeWQuG1UPrlxgA7QoUzFhOnilHDp0AXCyHw==",
+			"version": "7.23.2",
+			"resolved": "https://registry.npmjs.org/@babel/traverse/-/traverse-7.23.2.tgz",
+			"integrity": "sha512-azpe59SQ48qG6nu2CzcMLbxUudtN+dOM9kDbUqGq3HXUJRlo7i8fvPoxQUzYgLZ4cMVmuZgm8vvBpNeRhd6XSw==",
 			"dev": true,
 			"requires": {
 				"@babel/code-frame": "^7.22.13",
-				"@babel/generator": "^7.22.15",
+				"@babel/generator": "^7.23.0",
 				"@babel/helper-environment-visitor": "^7.22.20",
-				"@babel/helper-function-name": "^7.22.5",
+				"@babel/helper-function-name": "^7.23.0",
 				"@babel/helper-hoist-variables": "^7.22.5",
 				"@babel/helper-split-export-declaration": "^7.22.6",
-				"@babel/parser": "^7.22.16",
-				"@babel/types": "^7.22.19",
+				"@babel/parser": "^7.23.0",
+				"@babel/types": "^7.23.0",
 				"debug": "^4.1.0",
 				"globals": "^11.1.0"
 			},
@@ -10946,13 +10946,13 @@
 			}
 		},
 		"@babel/types": {
-			"version": "7.22.19",
-			"resolved": "https://registry.npmjs.org/@babel/types/-/types-7.22.19.tgz",
-			"integrity": "sha512-P7LAw/LbojPzkgp5oznjE6tQEIWbp4PkkfrZDINTro9zgBRtI324/EYsiSI7lhPbpIQ+DCeR2NNmMWANGGfZsg==",
+			"version": "7.23.0",
+			"resolved": "https://registry.npmjs.org/@babel/types/-/types-7.23.0.tgz",
+			"integrity": "sha512-0oIyUfKoI3mSqMvsxBdclDwxXKXAUA8v/apZbc+iSyARYou1o8ZGDxbUYyLFoW2arqS2jDGqJuZvv1d/io1axg==",
 			"dev": true,
 			"requires": {
 				"@babel/helper-string-parser": "^7.22.5",
-				"@babel/helper-validator-identifier": "^7.22.19",
+				"@babel/helper-validator-identifier": "^7.22.20",
 				"to-fast-properties": "^2.0.0"
 			}
 		},
@@ -12340,12 +12340,12 @@
 			"dev": true
 		},
 		"axios": {
-			"version": "1.5.0",
-			"resolved": "https://registry.npmjs.org/axios/-/axios-1.5.0.tgz",
-			"integrity": "sha512-D4DdjDo5CY50Qms0qGQTTw6Q44jl7zRwY7bthds06pUGfChBCTcQs+N743eFWGEd6pRTMd6A+I87aWyFV5wiZQ==",
+			"version": "1.6.8",
+			"resolved": "https://registry.npmjs.org/axios/-/axios-1.6.8.tgz",
+			"integrity": "sha512-v/ZHtJDU39mDpyBoFVkETcd/uNdxrWRrg3bKpOKzXFA6Bvqopts6ALSMU3y6ijYxbw2B+wPrIv46egTzJXCLGQ==",
 			"dev": true,
 			"requires": {
-				"follow-redirects": "^1.15.0",
+				"follow-redirects": "^1.15.6",
 				"form-data": "^4.0.0",
 				"proxy-from-env": "^1.1.0"
 			}
@@ -12483,12 +12483,12 @@
 			}
 		},
 		"braces": {
-			"version": "3.0.2",
-			"resolved": "https://registry.npmjs.org/braces/-/braces-3.0.2.tgz",
-			"integrity": "sha512-b8um+L1RzM3WDSzvhm6gIz1yfTbBt6YTlcEKAvsmqCZZFw46z626lVj9j1yEPW33H5H+lBQpZMP1k8l+78Ha0A==",
+			"version": "3.0.3",
+			"resolved": "https://registry.npmjs.org/braces/-/braces-3.0.3.tgz",
+			"integrity": "sha512-yQbXgO/OSZVD2IsiLlro+7Hf6Q18EJrKSEsdoMzKePKXct3gvD8oLcOQdIzGupr5Fj+EDe8gO/lxc1BzfMpxvA==",
 			"dev": true,
 			"requires": {
-				"fill-range": "^7.0.1"
+				"fill-range": "^7.1.1"
 			}
 		},
 		"brotli-size": {
@@ -12870,9 +12870,9 @@
 			"dev": true
 		},
 		"concurrently": {
-			"version": "8.2.1",
-			"resolved": "https://registry.npmjs.org/concurrently/-/concurrently-8.2.1.tgz",
-			"integrity": "sha512-nVraf3aXOpIcNud5pB9M82p1tynmZkrSGQ1p6X/VY8cJ+2LMVqAgXsJxYYefACSHbTYlm92O1xuhdGTjwoEvbQ==",
+			"version": "8.2.2",
+			"resolved": "https://registry.npmjs.org/concurrently/-/concurrently-8.2.2.tgz",
+			"integrity": "sha512-1dP4gpXFhei8IOtlXRE/T/4H88ElHgTiUzh71YUmtjTEHMSRS2Z/fgOxHSxxusGHogsRfxNq1vyAwxSC+EVyDg==",
 			"dev": true,
 			"requires": {
 				"chalk": "^4.1.2",
@@ -13903,9 +13903,9 @@
 			}
 		},
 		"fill-range": {
-			"version": "7.0.1",
-			"resolved": "https://registry.npmjs.org/fill-range/-/fill-range-7.0.1.tgz",
-			"integrity": "sha512-qOo9F+dMUmC2Lcb4BbVvnKJxTPjCm+RRpe4gDuGrzkL7mEVl/djYSu2OdQ2Pa302N4oqkSg9ir6jaLWJ2USVpQ==",
+			"version": "7.1.1",
+			"resolved": "https://registry.npmjs.org/fill-range/-/fill-range-7.1.1.tgz",
+			"integrity": "sha512-YsGpe3WHLK8ZYi4tWDg2Jy3ebRz2rXowDxnld4bkQB00cc/1Zw9AWnC0i9ztDJitivtQvaI9KaLyKrc+hBW0yg==",
 			"dev": true,
 			"requires": {
 				"to-regex-range": "^5.0.1"
@@ -14045,9 +14045,9 @@
 			}
 		},
 		"follow-redirects": {
-			"version": "1.15.4",
-			"resolved": "https://registry.npmjs.org/follow-redirects/-/follow-redirects-1.15.4.tgz",
-			"integrity": "sha512-Cr4D/5wlrb0z9dgERpUL3LrmPKVDsETIJhaCMeDfuFYcqa5bldGV6wBsAN6X/vxlXQtFBMrXdXxdL8CbDTGniw==",
+			"version": "1.15.6",
+			"resolved": "https://registry.npmjs.org/follow-redirects/-/follow-redirects-1.15.6.tgz",
+			"integrity": "sha512-wWN62YITEaOpSK584EZXJafH1AGpO8RVgElfkuXbTOrPX4fIfOyEpW/CsiNd8JdYrAoOvafRTOEnvsO++qCqFA==",
 			"dev": true
 		},
 		"for-each": {
diff --git a/package.json b/package.json
index b16373e9..0005dd57 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
 	"name": "fontoxpath",
-	"version": "3.30.3",
+	"version": "3.32.0",
 	"description": "A minimalistic XPath 3.1 engine in JavaScript",
 	"main": "dist/fontoxpath.js",
 	"module": "dist/fontoxpath.esm.js",
diff --git a/src/domFacade/ConcreteNode.ts b/src/domFacade/ConcreteNode.ts
index 8f84393e..7ed11174 100644
--- a/src/domFacade/ConcreteNode.ts
+++ b/src/domFacade/ConcreteNode.ts
@@ -28,6 +28,9 @@ export type ConcreteCDATASectionNode = CDATASection & { nodeType: NODE_TYPES.CDA
 export type ConcreteDocumentTypeNode = DocumentType & { nodeType: NODE_TYPES.DOCUMENT_TYPE_NODE };
 export type ConcreteAttributeNode = Attr & { nodeType: NODE_TYPES.ATTRIBUTE_NODE };
 export type ConcreteDocumentNode = Document & { nodeType: NODE_TYPES.DOCUMENT_NODE };
+export type ConcreteDocumentFragmentNode = DocumentFragment & {
+	nodeType: NODE_TYPES.DOCUMENT_FRAGMENT_NODE;
+};
 export type ConcreteProcessingInstructionNode = ProcessingInstruction & {
 	nodeType: NODE_TYPES.PROCESSING_INSTRUCTION_NODE;
 };
@@ -47,4 +50,5 @@ export type ConcreteNode =
 	| ConcreteChildNode
 	| ConcreteParentNode
 	| ConcreteAttributeNode
-	| ConcreteDocumentTypeNode;
+	| ConcreteDocumentTypeNode
+	| ConcreteDocumentFragmentNode;
diff --git a/src/expressions/dataTypes/atomize.ts b/src/expressions/dataTypes/atomize.ts
index b5bb53c3..77ecbdb2 100644
--- a/src/expressions/dataTypes/atomize.ts
+++ b/src/expressions/dataTypes/atomize.ts
@@ -79,7 +79,11 @@ export function atomizeSingleValue(
 				);
 				return;
 			}
-			if (aNodeType === NODE_TYPES.ELEMENT_NODE || aNodeType === NODE_TYPES.DOCUMENT_NODE) {
+			if (
+				aNodeType === NODE_TYPES.ELEMENT_NODE ||
+				aNodeType === NODE_TYPES.DOCUMENT_NODE ||
+				aNodeType === NODE_TYPES.DOCUMENT_FRAGMENT_NODE
+			) {
 				const children = domFacade.getChildNodes(
 					aNode as ConcreteParentNode | TinyParentNode,
 				);
diff --git a/src/expressions/functions/builtInFunctions_node.ts b/src/expressions/functions/builtInFunctions_node.ts
index 23235f0c..42006831 100644
--- a/src/expressions/functions/builtInFunctions_node.ts
+++ b/src/expressions/functions/builtInFunctions_node.ts
@@ -30,7 +30,7 @@ import { errXPDY0002 } from '../XPathErrors';
 import { BuiltinDeclarationType } from './builtInFunctions';
 import builtinStringFunctions from './builtInFunctions_string';
 import FunctionDefinitionType from './FunctionDefinitionType';
-
+import generateId from './generateId';
 const fnString = builtinStringFunctions.functions.string;
 
 function contextItemAsFirstArgument(
@@ -123,6 +123,23 @@ const fnData: FunctionDefinitionType = (
 	return atomize(sequence, executionParameters);
 };
 
+const fnGenerateId: FunctionDefinitionType = (
+	dynamicContext,
+	executionParameters,
+	_staticContext,
+	nodeValue,
+) => {
+	if (nodeValue.isEmpty()) {
+		return sequenceFactory.singleton(createAtomicValue('', ValueType.XSSTRING));
+	}
+	if (!isSubtypeOf(nodeValue.first().type, ValueType.NODE)) {
+		throw new Error('XPTY0004: The context item must be a node.');
+	}
+	const node = nodeValue.first().value as NodePointer;
+
+	return sequenceFactory.singleton(createAtomicValue(generateId(node), ValueType.XSSTRING));
+};
+
 const fnHasChildren: FunctionDefinitionType = (
 	_dynamicContext,
 	executionParameters,
@@ -165,6 +182,78 @@ function areSameNode(
 	return true;
 }
 
+/**
+ * Test if a string should match the xml:lang attribute string of a node.
+ */
+function langMatchString(truth: string, test: string): boolean {
+	truth = truth.toLowerCase();
+	test = test.toLowerCase();
+	if (truth === test) {
+		return true;
+	} else {
+		return truth.length < 5 || !truth.startsWith(test)
+			? false
+			: /* Strip the least specific part and test again */
+			  langMatchString(truth.replace(/-[a-z0-9]+$/, ''), test);
+	}
+}
+
+/**
+ * Starting at a given node, test the xml:lang attribute to see if it
+   matches a test. Move up the tree until the test passes or fails.
+ */
+function langMatchNode(node: NodePointer, domFacade: DomFacade, test: string): ISequence {
+	let toTest = node;
+	while (toTest) {
+		if (domFacade.getNodeType(toTest) !== NODE_TYPES.ELEMENT_NODE) {
+			toTest = domFacade.getParentNodePointer(toTest as AttributeNodePointer);
+		} else if (domFacade.getNodeType(toTest) === NODE_TYPES.ELEMENT_NODE) {
+			const attrValue = domFacade.getAttribute(toTest as ElementNodePointer, 'xml:lang');
+			if (attrValue) {
+				return langMatchString(attrValue, test)
+					? sequenceFactory.singletonTrueSequence()
+					: sequenceFactory.singletonFalseSequence();
+			} else {
+				toTest = domFacade.getParentNodePointer(toTest as ElementNodePointer);
+			}
+		}
+	}
+	return sequenceFactory.singletonFalseSequence();
+}
+
+const fnLang: FunctionDefinitionType = (
+	dynamicContext,
+	executionParameters,
+	_staticContext,
+	langTestValue,
+	nodeValue,
+) => {
+	const domFacade = executionParameters.domFacade;
+	let langTest;
+	if (langTestValue.isEmpty()) {
+		langTest = '';
+	} else if (!isSubtypeOf(langTestValue.first().type, ValueType.XSSTRING)) {
+		throw new Error('XPTY0004: The first argument of lang must be a string.');
+	} else {
+		langTest = langTestValue.first().value;
+	}
+	let node;
+	if (!nodeValue) {
+		if (!dynamicContext || !dynamicContext.contextItem) {
+			throw errXPDY0002(
+				`The function lang depends on dynamic context if a node is not passed as the second argument.`,
+			);
+		}
+		if (!isSubtypeOf(dynamicContext.contextItem.type, ValueType.NODE)) {
+			throw new Error('XPTY0004: The context item must be a node.');
+		}
+		node = dynamicContext.contextItem.value;
+	} else {
+		node = nodeValue.first().value;
+	}
+	return langMatchNode(node, domFacade, langTest);
+};
+
 const fnPath: FunctionDefinitionType = (
 	_dynamicContext,
 	executionParameters,
@@ -545,6 +634,38 @@ const declarations: BuiltinDeclarationType[] = [
 		namespaceURI: BUILT_IN_NAMESPACE_URIS.FUNCTIONS_NAMESPACE_URI,
 		returnType: { type: ValueType.XSANYATOMICTYPE, mult: SequenceMultiplicity.ZERO_OR_MORE },
 	},
+
+	{
+		argumentTypes: [{ type: ValueType.XSSTRING, mult: SequenceMultiplicity.ZERO_OR_ONE }],
+		callFunction: fnLang,
+		localName: 'lang',
+		namespaceURI: BUILT_IN_NAMESPACE_URIS.FUNCTIONS_NAMESPACE_URI,
+		returnType: { type: ValueType.XSBOOLEAN, mult: SequenceMultiplicity.EXACTLY_ONE },
+	},
+	{
+		argumentTypes: [
+			{ type: ValueType.XSSTRING, mult: SequenceMultiplicity.ZERO_OR_ONE },
+			{ type: ValueType.NODE, mult: SequenceMultiplicity.EXACTLY_ONE },
+		],
+		callFunction: fnLang,
+		localName: 'lang',
+		namespaceURI: BUILT_IN_NAMESPACE_URIS.FUNCTIONS_NAMESPACE_URI,
+		returnType: { type: ValueType.XSBOOLEAN, mult: SequenceMultiplicity.EXACTLY_ONE },
+	},
+	{
+		argumentTypes: [],
+		callFunction: contextItemAsFirstArgument.bind(null, 'generate-id', fnGenerateId),
+		localName: 'generate-id',
+		namespaceURI: BUILT_IN_NAMESPACE_URIS.FUNCTIONS_NAMESPACE_URI,
+		returnType: { type: ValueType.XSSTRING, mult: SequenceMultiplicity.EXACTLY_ONE },
+	},
+	{
+		argumentTypes: [{ type: ValueType.NODE, mult: SequenceMultiplicity.ZERO_OR_ONE }],
+		callFunction: fnGenerateId,
+		localName: 'generate-id',
+		namespaceURI: BUILT_IN_NAMESPACE_URIS.FUNCTIONS_NAMESPACE_URI,
+		returnType: { type: ValueType.XSSTRING, mult: SequenceMultiplicity.EXACTLY_ONE },
+	},
 ];
 
 export default {
diff --git a/src/expressions/functions/builtInFunctions_string.ts b/src/expressions/functions/builtInFunctions_string.ts
index f347b16d..291c775b 100644
--- a/src/expressions/functions/builtInFunctions_string.ts
+++ b/src/expressions/functions/builtInFunctions_string.ts
@@ -355,11 +355,25 @@ const fnTokenize: FunctionDefinitionType = (
 	const patternString: string = pattern.first().value;
 
 	const regex = compileJSRegex(patternString);
+	regex.lastIndex = 0;
+	const results = [];
+	let result = regex.exec(inputString);
+
+	let index = 0;
+
+	// Repeatedly execute the regex to get all the outputs
+	// TODO: with this approach it should not be too difficult to actually use XSPattern here.
+	while (result) {
+		results.push(inputString.slice(index, result.index));
+		index = regex.lastIndex;
+		result = regex.exec(inputString);
+	}
+
+	// Don't forget the last split part!
+	results.push(inputString.slice(index));
 
 	return sequenceFactory.create(
-		inputString
-			.split(regex)
-			.map((token: string) => createAtomicValue(token, ValueType.XSSTRING)),
+		results.map((token: string) => createAtomicValue(token, ValueType.XSSTRING)),
 	);
 };
 
diff --git a/src/expressions/functions/generateId.ts b/src/expressions/functions/generateId.ts
new file mode 100644
index 00000000..c92b2344
--- /dev/null
+++ b/src/expressions/functions/generateId.ts
@@ -0,0 +1,15 @@
+import { ConcreteNode } from '../../domFacade/ConcreteNode';
+import { NodePointer, TinyNode } from '../../domClone/Pointer';
+
+const generateIdMap: WeakMap<TinyNode | ConcreteNode, string> = new WeakMap();
+let generateIdCounter = 0;
+
+function generateId(ptr: NodePointer): string {
+	const node = ptr.node;
+	if (!generateIdMap.has(node)) {
+		generateIdMap.set(node, `id${++generateIdCounter}`);
+	}
+	return generateIdMap.get(node);
+}
+
+export default generateId;


Test patch:
diff --git a/test/assets/runnableTestSets.csv b/test/assets/runnableTestSets.csv
index 9b8ff536..f864b73d 100644
--- a/test/assets/runnableTestSets.csv
+++ b/test/assets/runnableTestSets.csv
@@ -111,7 +111,7 @@ fn-insert-before,true
 fn-iri-to-uri,true
 fn-json-doc,false
 fn-json-to-xml,false
-fn-lang,false
+fn-lang,true
 fn-last,true
 fn-load-xquery-module,false
 fn-local-name,false
diff --git a/test/assets/unrunnableTestCases.csv b/test/assets/unrunnableTestCases.csv
index da65a04c..79a5f487 100644
--- a/test/assets/unrunnableTestCases.csv
+++ b/test/assets/unrunnableTestCases.csv
@@ -607,10 +607,6 @@ fn-function-lookup-259,AssertionError: Expected XPath exists(function-lookup(fn:
 fn-function-lookup-260,Error: XPTY0004: Expected base expression of a function call to evaluate to a sequence of single function item
 fn-function-lookup-261,AssertionError: Expected XPath exists(function-lookup(fn:QName('http://www.w3.org/2005/xpath-functions', 'in-scope-prefixes'), 1)) to resolve to true: expected false to be true
 fn-function-lookup-262,Error: XPTY0004: Expected base expression of a function call to evaluate to a sequence of single function item
-fn-function-lookup-275,AssertionError: Expected XPath exists(function-lookup(fn:QName('http://www.w3.org/2005/xpath-functions', 'lang'), 1)) to resolve to true: expected false to be true
-fn-function-lookup-276,Error: XPTY0004: Expected base expression of a function call to evaluate to a sequence of single function item
-fn-function-lookup-277,AssertionError: Expected XPath exists(function-lookup(fn:QName('http://www.w3.org/2005/xpath-functions', 'lang'), 2)) to resolve to true: expected false to be true
-fn-function-lookup-278,Error: XPTY0004: Expected base expression of a function call to evaluate to a sequence of single function item
 fn-function-lookup-318,Error: FOCH0002: No collations are supported
 fn-function-lookup-320,Error: XPTY0004: eqOp not available for xs:integer and xs:string
 fn-function-lookup-322,Error: FOCH0002: No collations are supported
@@ -621,10 +617,6 @@ fn-function-lookup-353,AssertionError: Expected XPath exists(function-lookup(fn:
 fn-function-lookup-354,Error: XPTY0004: Expected base expression of a function call to evaluate to a sequence of single function item
 fn-function-lookup-355,AssertionError: Expected XPath exists(function-lookup(fn:QName('http://www.w3.org/2005/xpath-functions', 'element-with-id'), 2)) to resolve to true: expected false to be true
 fn-function-lookup-356,Error: XPTY0004: Expected base expression of a function call to evaluate to a sequence of single function item
-fn-function-lookup-361,AssertionError: Expected XPath exists(function-lookup(fn:QName('http://www.w3.org/2005/xpath-functions', 'generate-id'), 0)) to resolve to true: expected false to be true
-fn-function-lookup-362,Error: XPTY0004: Expected base expression of a function call to evaluate to a sequence of single function item
-fn-function-lookup-363,AssertionError: Expected XPath exists(function-lookup(fn:QName('http://www.w3.org/2005/xpath-functions', 'generate-id'), 1)) to resolve to true: expected false to be true
-fn-function-lookup-364,Error: XPTY0004: Expected base expression of a function call to evaluate to a sequence of single function item
 fn-function-lookup-365,AssertionError: Expected XPath exists(function-lookup(fn:QName('http://www.w3.org/2005/xpath-functions', 'doc'), 1)) to resolve to true: expected false to be true
 fn-function-lookup-366,Error: XPTY0004: Expected base expression of a function call to evaluate to a sequence of single function item
 fn-function-lookup-367,AssertionError: Expected XPath exists(function-lookup(fn:QName('http://www.w3.org/2005/xpath-functions', 'doc-available'), 1)) to resolve to true: expected false to be true
@@ -727,33 +719,13 @@ fn-function-name-014,AssertionError: Expected executing the XPath "fn:function-n
 fn-function-name-018,AssertionError: Expected executing the XPath "fn:function-name( concat#340282366920938463463374607431768211456 )" to resolve to one of the expected results, but got AssertionError: expected [Function] to throw error matching /FOAR0002/ but got 'Invalid array length', RangeError: Invalid array length.
 fn-function-name-023,Error: 1: ( 2: 	declare function local:add($arg1, $arg2, $arg3)    	        ^ 3:         { 4:            $arg1 + $arg2 + $arg3  Error: XPST0003: Failed to parse script. Expected -,+,validate,(#,(,#,parent::,ancestor::,preceding-sibling::,preceding::,ancestor-or-self::,..,child::,descendant::,attribute::,self::,descendant-or-self::,following-sibling::,following::,document-node(,element,attribute,schema-element,schema-attribute(,processing-instruction(,processing-instruction(),comment(),text(),namespace-node(),node(),:*,Q,[A-Z_a-z\xC0-\xD6\xD8-\xF6\xF8-\u02FF\u0370-\u037D\u037F-\u1FFF\u200C\u200D\u2070-\u218F\u2C00-\u2FEF\u3001-\uD7FF\uF900-\uFDCF\uFDF0-\uFFFD],[\uD800-\uDB7F],/,//   at <>:2:10 - 2:11
 fn-function-name-024,Error: No selector counterpart for: typedFunctionTest.
-generate-id-000,Error: XPST0017: Function Q{http://www.w3.org/2005/xpath-functions}generate-id with arity of 1 not registered. No similar functions found.
-generate-id-001,Error: XPST0017: Function Q{http://www.w3.org/2005/xpath-functions}generate-id with arity of 1 not registered. No similar functions found.
-generate-id-002,Error: XPST0017: Function Q{http://www.w3.org/2005/xpath-functions}generate-id with arity of 1 not registered. No similar functions found.
-generate-id-003,Error: XPST0017: Function Q{http://www.w3.org/2005/xpath-functions}generate-id with arity of 1 not registered. No similar functions found.
-generate-id-004,Error: XPST0017: Function Q{http://www.w3.org/2005/xpath-functions}generate-id with arity of 1 not registered. No similar functions found.
-generate-id-005,Error: XPST0017: Function Q{http://www.w3.org/2005/xpath-functions}generate-id with arity of 1 not registered. No similar functions found.
-generate-id-006,Error: XPST0017: Function Q{http://www.w3.org/2005/xpath-functions}generate-id with arity of 1 not registered. No similar functions found.
-generate-id-008,Error: XPST0017: Function Q{http://www.w3.org/2005/xpath-functions}generate-id with arity of 0 not registered. No similar functions found.
-generate-id-009,Error: XPST0017: Function Q{http://www.w3.org/2005/xpath-functions}generate-id with arity of 0 not registered. No similar functions found.
-generate-id-010,Error: XPST0017: Function Q{http://www.w3.org/2005/xpath-functions}generate-id with arity of 0 not registered. No similar functions found.
 generate-id-012,Error: XPST0017: Function Q{http://www.w3.org/2005/xpath-functions}collection with arity of 0 not registered. No similar functions found.
 generate-id-013,Error: XPST0017: Function Q{http://www.w3.org/2005/xpath-functions}collection with arity of 0 not registered. No similar functions found.
 generate-id-014,Error: No selector counterpart for: computedDocumentConstructor.
 generate-id-015,Error: No selector counterpart for: computedDocumentConstructor.
 generate-id-016,Error: No selector counterpart for: computedDocumentConstructor.
 generate-id-017,Error: No selector counterpart for: computedDocumentConstructor.
-generate-id-018,Error: XPST0017: Function Q{http://www.w3.org/2005/xpath-functions}generate-id with arity of 1 not registered. No similar functions found.
-generate-id-019,Error: XPST0017: Function Q{http://www.w3.org/2005/xpath-functions}generate-id with arity of 0 not registered. No similar functions found.
-generate-id-020,Error: XPST0017: Function Q{http://www.w3.org/2005/xpath-functions}generate-id with arity of 1 not registered. No similar functions found.
-generate-id-021,Error: XPST0017: Function Q{http://www.w3.org/2005/xpath-functions}generate-id with arity of 1 not registered. No similar functions found.
-generate-id-022,Error: XPST0017: Function Q{http://www.w3.org/2005/xpath-functions}generate-id with arity of 1 not registered. No similar functions found.
-generate-id-023,Error: XPST0017: Function Q{http://www.w3.org/2005/xpath-functions}generate-id with arity of 1 not registered. No similar functions found.
-generate-id-901,AssertionError: expected [Function] to throw error matching /XPDY0002/ but got 'XPST0017: Function Q{http://www.w3.or…'
-generate-id-902,AssertionError: expected [Function] to throw error matching /XPTY0004/ but got 'XPST0017: Function Q{http://www.w3.or…'
-generate-id-903,AssertionError: expected [Function] to throw error matching /XPTY0004/ but got 'XPST0017: Function Q{http://www.w3.or…'
-generate-id-904,AssertionError: expected [Function] to throw error matching /XPTY0004/ but got 'XPST0017: Function Q{http://www.w3.or…'
-generate-id-905,AssertionError: expected [Function] to throw error matching /XPTY0004/ but got 'XPST0017: Function Q{http://www.w3.or…'
+generate-id-018,Error: XPTY0004: Multiplicity of function argument of type node()? for generate-id is incorrect. Expected "?", but got "+".
 fn-has-children-007,AssertionError: Expected executing the XPath "(1)[fn:has-children()]" to resolve to one of the expected results, but got AssertionError: expected [Function] to throw error matching /XPTY0004/ but got 'Cannot read properties of undefined (…'.
 fn-has-children-008,AssertionError: Expected executing the XPath "(fn:concat#2)[fn:has-children()]" to resolve to one of the expected results, but got AssertionError: expected [Function] to throw error matching /XPTY0004/ but got 'Cannot read properties of undefined (…'.
 fn-has-children-012,AssertionError: expected [Function] to throw an error
@@ -804,6 +776,8 @@ K-SeqInsertBeforeFunc-17,Error: No selector counterpart for: treatExpr.
 K-SeqInsertBeforeFunc-18,Error: No selector counterpart for: treatExpr.
 K-SeqInsertBeforeFunc-19,Error: No selector counterpart for: treatExpr.
 K-SeqInsertBeforeFunc-20,Error: No selector counterpart for: treatExpr.
+fn-lang-31,AssertionError: Expected XPath let $l := /langs/para[4]!fn:lang#1 return /langs/para[1]!$l('en') to resolve to false: expected true to be false
+fn-lang-32,AssertionError: Expected XPath let $l := /langs/para[4]!fn:lang#1 return /langs/para[1]!$l('de') to resolve to true: expected false to be true
 K-ContextLastFunc-5,Error: No selector counterpart for: treatExpr.
 K-ContextLastFunc-24,Error: No selector counterpart for: treatExpr.
 K-ContextLastFunc-25,Error: No selector counterpart for: treatExpr.
@@ -1625,7 +1599,6 @@ cbcl-timezone-from-date-007,Error: XPST0017: Function Q{http://www.w3.org/2005/x
 fn-tokenize-2,AssertionError: expected [Function] to throw error matching /FORX0001/ but got 'Not implemented: Using flags in token…'
 fn-tokenize-5,Error: Not implemented: Using flags in tokenize is not supported
 fn-tokenize-6,Error: Not implemented: Using flags in tokenize is not supported
-fn-tokenize-9,AssertionError: string-join(fn:tokenize("abracadabra", "(ab)|(a)"), '#'): expected '#ab##r##a#c##a#d#ab##r##a#' to equal '#r#c#d#r#'
 fn-tokenize-31,Error: Not implemented: Using flags in tokenize is not supported
 fn-tokenize-32,Error: Not implemented: Using flags in tokenize is not supported
 fn-tokenize-35,Error: Not implemented: Using flags in tokenize is not supported
@@ -2984,7 +2957,6 @@ K-FunctionCallExpr-5,AssertionError: expected [Function] to throw error matching
 K-FunctionCallExpr-15a,Error: XPST0017: Function Q{http://www.w3.org/2005/xpath-functions}format-number with arity of 2 not registered. Did you mean "Q{http://www.w3.org/2005/xpath-functions}format-integer (xs:integer?, xs:string)"?
 K-FunctionCallExpr-16a,Error: XPST0017: Function Q{http://www.w3.org/2005/xpath-functions}format-time with arity of 2 not registered. Did you mean "Q{http://www.w3.org/2005/xpath-functions}current-time ()" or "Q{http://www.w3.org/2005/xpath-functions}format-integer (xs:integer?, xs:string)"?
 K-FunctionCallExpr-17a,Error: XPST0017: Function Q{http://www.w3.org/2005/xpath-functions}format-time with arity of 5 not registered. Did you mean "Q{http://www.w3.org/2005/xpath-functions}current-time ()" or "Q{http://www.w3.org/2005/xpath-functions}format-integer (xs:integer?, xs:string)"?
-K-FunctionCallExpr-25a,Error: XPST0017: Function generate-id with arity of 1 not registered. No similar functions found.
 function-call-reserved-function-names-034,AssertionError: expected [Function] to throw error matching /XPST0017/ but got '1: \n2: \tnamespace-node(1)\n   \t   …'
 function-declaration-017,Error: XPST0008, The variable v is not in scope.
 function-declaration-022,AssertionError: expected [Function] to throw error matching /XQST0034/ but got 'XQST0049: The function or variable "Q…'
@@ -3161,10 +3133,6 @@ function-literal-259,Error: XPST0017: Function Q{http://www.w3.org/2005/xpath-fu
 function-literal-260,Error: XPST0017: Function Q{http://www.w3.org/2005/xpath-functions}namespace-uri-for-prefix with arity of 2 not registered. Did you mean "Q{http://www.w3.org/2005/xpath-functions}namespace-uri-from-QName (xs:QName?)", "Q{http://www.w3.org/2005/xpath-functions}namespace-uri (node())" or "Q{http://www.w3.org/2005/xpath-functions}namespace-uri ()"?
 function-literal-261,Error: XPST0017: Function Q{http://www.w3.org/2005/xpath-functions}in-scope-prefixes with arity of 1 not registered. No similar functions found.
 function-literal-262,Error: XPST0017: Function Q{http://www.w3.org/2005/xpath-functions}in-scope-prefixes with arity of 1 not registered. No similar functions found.
-function-literal-275,Error: XPST0017: Function Q{http://www.w3.org/2005/xpath-functions}lang with arity of 1 not registered. Did you mean "Q{http://www.w3.org/2001/XMLSchema}long (xs:anyAtomicType?)"?
-function-literal-276,Error: XPST0017: Function Q{http://www.w3.org/2005/xpath-functions}lang with arity of 1 not registered. Did you mean "Q{http://www.w3.org/2001/XMLSchema}long (xs:anyAtomicType?)"?
-function-literal-277,Error: XPST0017: Function Q{http://www.w3.org/2005/xpath-functions}lang with arity of 2 not registered. Did you mean "Q{http://www.w3.org/2001/XMLSchema}long (xs:anyAtomicType?)"?
-function-literal-278,Error: XPST0017: Function Q{http://www.w3.org/2005/xpath-functions}lang with arity of 2 not registered. Did you mean "Q{http://www.w3.org/2001/XMLSchema}long (xs:anyAtomicType?)"?
 function-literal-318,Error: FOCH0002: No collations are supported
 function-literal-320,Error: XPTY0004: eqOp not available for xs:integer and xs:string
 function-literal-322,Error: FOCH0002: No collations are supported
@@ -3175,10 +3143,6 @@ function-literal-353,Error: XPST0017: Function Q{http://www.w3.org/2005/xpath-fu
 function-literal-354,Error: XPST0017: Function Q{http://www.w3.org/2005/xpath-functions}element-with-id with arity of 1 not registered. No similar functions found.
 function-literal-355,Error: XPST0017: Function Q{http://www.w3.org/2005/xpath-functions}element-with-id with arity of 2 not registered. No similar functions found.
 function-literal-356,Error: XPST0017: Function Q{http://www.w3.org/2005/xpath-functions}element-with-id with arity of 2 not registered. No similar functions found.
-function-literal-361,Error: XPST0017: Function Q{http://www.w3.org/2005/xpath-functions}generate-id with arity of 0 not registered. No similar functions found.
-function-literal-362,Error: XPST0017: Function Q{http://www.w3.org/2005/xpath-functions}generate-id with arity of 0 not registered. No similar functions found.
-function-literal-363,Error: XPST0017: Function Q{http://www.w3.org/2005/xpath-functions}generate-id with arity of 1 not registered. No similar functions found.
-function-literal-364,Error: XPST0017: Function Q{http://www.w3.org/2005/xpath-functions}generate-id with arity of 1 not registered. No similar functions found.
 function-literal-365,Error: XPST0017: Function Q{http://www.w3.org/2005/xpath-functions}doc with arity of 1 not registered. No similar functions found.
 function-literal-366,Error: XPST0017: Function Q{http://www.w3.org/2005/xpath-functions}doc with arity of 1 not registered. No similar functions found.
 function-literal-367,Error: XPST0017: Function Q{http://www.w3.org/2005/xpath-functions}doc-available with arity of 1 not registered. No similar functions found.
@@ -3785,13 +3749,6 @@ functx-fn-escape-html-uri-2,Error: XPST0017: Function Q{http://www.w3.org/2005/x
 functx-fn-escape-html-uri-all,Error: XPST0017: Function Q{http://www.w3.org/2005/xpath-functions}escape-html-uri with arity of 1 not registered. Did you mean "Q{http://www.w3.org/2005/xpath-functions}encode-for-uri (xs:string?)"?
 functx-fn-index-of-5,Error: XPTY0004: eqOp not available for xs:integer and xs:string
 functx-fn-index-of-all,Error: XPTY0004: eqOp not available for xs:integer and xs:string
-functx-fn-lang-1,Error: XPST0017: Function Q{http://www.w3.org/2005/xpath-functions}lang with arity of 1 not registered. Did you mean "Q{http://www.w3.org/2001/XMLSchema}long (xs:anyAtomicType?)"?
-functx-fn-lang-2,Error: XPST0017: Function Q{http://www.w3.org/2005/xpath-functions}lang with arity of 1 not registered. Did you mean "Q{http://www.w3.org/2001/XMLSchema}long (xs:anyAtomicType?)"?
-functx-fn-lang-3,Error: XPST0017: Function Q{http://www.w3.org/2005/xpath-functions}lang with arity of 1 not registered. Did you mean "Q{http://www.w3.org/2001/XMLSchema}long (xs:anyAtomicType?)"?
-functx-fn-lang-4,Error: XPST0017: Function Q{http://www.w3.org/2005/xpath-functions}lang with arity of 1 not registered. Did you mean "Q{http://www.w3.org/2001/XMLSchema}long (xs:anyAtomicType?)"?
-functx-fn-lang-5,Error: XPST0017: Function Q{http://www.w3.org/2005/xpath-functions}lang with arity of 1 not registered. Did you mean "Q{http://www.w3.org/2001/XMLSchema}long (xs:anyAtomicType?)"?
-functx-fn-lang-6,Error: XPST0017: Function Q{http://www.w3.org/2005/xpath-functions}lang with arity of 1 not registered. Did you mean "Q{http://www.w3.org/2001/XMLSchema}long (xs:anyAtomicType?)"?
-functx-fn-lang-all,Error: XPST0017: Function Q{http://www.w3.org/2005/xpath-functions}lang with arity of 1 not registered. Did you mean "Q{http://www.w3.org/2001/XMLSchema}long (xs:anyAtomicType?)"?
 functx-fn-matches-10,Error: XPST0017: Function Q{http://www.w3.org/2005/xpath-functions}matches with arity of 3 not registered. Did you mean "Q{http://www.w3.org/2005/xpath-functions}matches (xs:string?, xs:string)"?
 functx-fn-matches-12,Error: XPST0017: Function Q{http://www.w3.org/2005/xpath-functions}matches with arity of 3 not registered. Did you mean "Q{http://www.w3.org/2005/xpath-functions}matches (xs:string?, xs:string)"?
 functx-fn-matches-14,Error: XPST0017: Function Q{http://www.w3.org/2005/xpath-functions}matches with arity of 3 not registered. Did you mean "Q{http://www.w3.org/2005/xpath-functions}matches (xs:string?, xs:string)"?
@@ -3839,8 +3796,6 @@ functx-functx-dynamic-path-all,Error: No selector counterpart for: computedDocum
 functx-functx-get-matches-1,AssertionError: declare namespace functx = "http://www.example.com/";                     (:~ : Splits a string into matching and non-matching regions : : @author Priscilla Walmsley, Datypic : @version 1.0 : @see http://www.xqueryfunctions.com/xq/functx_get-matches-and-non-matches.html : @param $string the string to split : @param $regex the pattern :)          declare function functx:get-matches-and-non-matches ( $string as xs:string? , $regex as xs:string ) as element()* { let $iomf := functx:index-of-match-first($string, $regex) return if (empty($iomf)) then <non-match>{$string}</non-match> else if ($iomf > 1) then (<non-match>{substring($string,1,$iomf - 1)}</non-match>, functx:get-matches-and-non-matches( substring($string,$iomf),$regex)) else let $length := string-length($string) - string-length(functx:replace-first($string, $regex,'')) return (<match>{substring($string,1,$length)}</match>, if (string-length($string) > $length) then functx:get-matches-and-non-matches( substring($string,$length + 1),$regex) else ()) } ;                     (:~ : Return the matching regions of a string : : @author Priscilla Walmsley, Datypic : @version 1.0 : @see http://www.xqueryfunctions.com/xq/functx_get-matches.html : @param $string the string to split : @param $regex the pattern :)          declare function functx:get-matches ( $string as xs:string? , $regex as xs:string ) as xs:string* { functx:get-matches-and-non-matches($string,$regex)/ string(self::match) } ;                     (:~ : The first position of a matching substring : : @author Priscilla Walmsley, Datypic : @version 1.0 : @see http://www.xqueryfunctions.com/xq/functx_index-of-match-first.html : @param $arg the string : @param $pattern the pattern to match :)          declare function functx:index-of-match-first ( $arg as xs:string? , $pattern as xs:string ) as xs:integer? { if (matches($arg,$pattern)) then string-length(tokenize($arg, $pattern)[1]) + 1 else () } ;                     (:~ : Replaces the first match of a pattern : : @author Priscilla Walmsley, Datypic : @version 1.0 : @see http://www.xqueryfunctions.com/xq/functx_replace-first.html : @param $arg the entire string to change : @param $pattern the pattern of characters to replace : @param $replacement the replacement string :)          declare function functx:replace-first ( $arg as xs:string? , $pattern as xs:string , $replacement as xs:string ) as xs:string { replace($arg, concat('(^.*?)', $pattern), concat('$1',$replacement)) } ;                     (functx:get-matches( 'abc123def', '\d+')): expected '123  ' to equal ' 123 '
 functx-functx-get-matches-2,AssertionError: declare namespace functx = "http://www.example.com/";                     (:~ : Splits a string into matching and non-matching regions : : @author Priscilla Walmsley, Datypic : @version 1.0 : @see http://www.xqueryfunctions.com/xq/functx_get-matches-and-non-matches.html : @param $string the string to split : @param $regex the pattern :)          declare function functx:get-matches-and-non-matches ( $string as xs:string? , $regex as xs:string ) as element()* { let $iomf := functx:index-of-match-first($string, $regex) return if (empty($iomf)) then <non-match>{$string}</non-match> else if ($iomf > 1) then (<non-match>{substring($string,1,$iomf - 1)}</non-match>, functx:get-matches-and-non-matches( substring($string,$iomf),$regex)) else let $length := string-length($string) - string-length(functx:replace-first($string, $regex,'')) return (<match>{substring($string,1,$length)}</match>, if (string-length($string) > $length) then functx:get-matches-and-non-matches( substring($string,$length + 1),$regex) else ()) } ;                     (:~ : Return the matching regions of a string : : @author Priscilla Walmsley, Datypic : @version 1.0 : @see http://www.xqueryfunctions.com/xq/functx_get-matches.html : @param $string the string to split : @param $regex the pattern :)          declare function functx:get-matches ( $string as xs:string? , $regex as xs:string ) as xs:string* { functx:get-matches-and-non-matches($string,$regex)/ string(self::match) } ;                     (:~ : The first position of a matching substring : : @author Priscilla Walmsley, Datypic : @version 1.0 : @see http://www.xqueryfunctions.com/xq/functx_index-of-match-first.html : @param $arg the string : @param $pattern the pattern to match :)          declare function functx:index-of-match-first ( $arg as xs:string? , $pattern as xs:string ) as xs:integer? { if (matches($arg,$pattern)) then string-length(tokenize($arg, $pattern)[1]) + 1 else () } ;                     (:~ : Replaces the first match of a pattern : : @author Priscilla Walmsley, Datypic : @version 1.0 : @see http://www.xqueryfunctions.com/xq/functx_replace-first.html : @param $arg the entire string to change : @param $pattern the pattern of characters to replace : @param $replacement the replacement string :)          declare function functx:replace-first ( $arg as xs:string? , $pattern as xs:string , $replacement as xs:string ) as xs:string { replace($arg, concat('(^.*?)', $pattern), concat('$1',$replacement)) } ;                     (functx:get-matches( 'abc123def', '\d')): expected ' 1 3  2' to equal ' 1 2 3 '
 functx-functx-get-matches-all,AssertionError: declare namespace functx = "http://www.example.com/";                     (:~ : Splits a string into matching and non-matching regions : : @author Priscilla Walmsley, Datypic : @version 1.0 : @see http://www.xqueryfunctions.com/xq/functx_get-matches-and-non-matches.html : @param $string the string to split : @param $regex the pattern :)          declare function functx:get-matches-and-non-matches ( $string as xs:string? , $regex as xs:string ) as element()* { let $iomf := functx:index-of-match-first($string, $regex) return if (empty($iomf)) then <non-match>{$string}</non-match> else if ($iomf > 1) then (<non-match>{substring($string,1,$iomf - 1)}</non-match>, functx:get-matches-and-non-matches( substring($string,$iomf),$regex)) else let $length := string-length($string) - string-length(functx:replace-first($string, $regex,'')) return (<match>{substring($string,1,$length)}</match>, if (string-length($string) > $length) then functx:get-matches-and-non-matches( substring($string,$length + 1),$regex) else ()) } ;                     (:~ : Return the matching regions of a string : : @author Priscilla Walmsley, Datypic : @version 1.0 : @see http://www.xqueryfunctions.com/xq/functx_get-matches.html : @param $string the string to split : @param $regex the pattern :)          declare function functx:get-matches ( $string as xs:string? , $regex as xs:string ) as xs:string* { functx:get-matches-and-non-matches($string,$regex)/ string(self::match) } ;                     (:~ : The first position of a matching substring : : @author Priscilla Walmsley, Datypic : @version 1.0 : @see http://www.xqueryfunctions.com/xq/functx_index-of-match-first.html : @param $arg the string : @param $pattern the pattern to match :)          declare function functx:index-of-match-first ( $arg as xs:string? , $pattern as xs:string ) as xs:integer? { if (matches($arg,$pattern)) then string-length(tokenize($arg, $pattern)[1]) + 1 else () } ;                     (:~ : Replaces the first match of a pattern : : @author Priscilla Walmsley, Datypic : @version 1.0 : @see http://www.xqueryfunctions.com/xq/functx_replace-first.html : @param $arg the entire string to change : @param $pattern the pattern of characters to replace : @param $replacement the replacement string :)          declare function functx:replace-first ( $arg as xs:string? , $pattern as xs:string , $replacement as xs:string ) as xs:string { replace($arg, concat('(^.*?)', $pattern), concat('$1',$replacement)) } ;                     (functx:get-matches( 'abc123def', '\d+'), functx:get-matches( 'abc123def', '\d'), functx:get-matches( 'abc123def', '[a-z]{2}')): expected '123    1 3  2 ab  de ' to equal ' 123   1 2 3  ab  de '
-functx-functx-line-count-2,AssertionError: Expected XPath declare namespace functx = "http://www.example.com/";                     (:~ : The number of lines : : @author Priscilla Walmsley, Datypic : @version 1.0 : @see http://www.xqueryfunctions.com/xq/functx_line-count.html : @param $arg the string to test :)          declare function functx:line-count ( $arg as xs:string? ) as xs:integer { count(functx:lines($arg)) } ;                     (:~ : Split a string into separate lines : : @author Priscilla Walmsley, Datypic : @version 1.0 : @see http://www.xqueryfunctions.com/xq/functx_lines.html : @param $arg the string to split :)          declare function functx:lines ( $arg as xs:string? ) as xs:string* { tokenize($arg, '(\r\n?|\n\r?)') } ;          let $lines := 'a              value              on              many              lines' return (functx:line-count($lines))        to resolve to 5: expected false to be true
-functx-functx-line-count-all,AssertionError: declare namespace functx = "http://www.example.com/";                     (:~ : The number of lines : : @author Priscilla Walmsley, Datypic : @version 1.0 : @see http://www.xqueryfunctions.com/xq/functx_line-count.html : @param $arg the string to test :)          declare function functx:line-count ( $arg as xs:string? ) as xs:integer { count(functx:lines($arg)) } ;                     (:~ : Split a string into separate lines : : @author Priscilla Walmsley, Datypic : @version 1.0 : @see http://www.xqueryfunctions.com/xq/functx_lines.html : @param $arg the string to split :)          declare function functx:lines ( $arg as xs:string? ) as xs:string* { tokenize($arg, '(\r\n?|\n\r?)') } ;          let $lines := 'a                      value                      on                      many                      lines'           return (functx:line-count('a value'), functx:line-count($lines)): expected '1 9' to equal '1 5'
 functx-functx-next-day-1,Error: Not implemented: adding durations to xs:date
 functx-functx-next-day-2,Error: Not implemented: adding durations to xs:date
 functx-functx-next-day-all,Error: Not implemented: adding durations to xs:date
@@ -4131,7 +4086,6 @@ fo-test-fn-idref-001,Error: No selector counterpart for: validateExpr.
 fo-test-fn-idref-002,Error: No selector counterpart for: validateExpr.
 fo-test-fn-serialize-001,Error: XPST0017: Function Q{http://www.w3.org/2005/xpath-functions}serialize with arity of 2 not registered. Did you mean "Q{http://www.w3.org/2005/xpath-functions}serialize (item()*)"?
 fo-test-fn-serialize-002,Error: XPST0017: Function Q{http://www.w3.org/2005/xpath-functions}serialize with arity of 2 not registered. Did you mean "Q{http://www.w3.org/2005/xpath-functions}serialize (item()*)"?
-fo-test-fn-filter-002,Error: XPST0017: Function Q{http://www.w3.org/2005/xpath-functions}lang with arity of 2 not registered. Did you mean "Q{http://www.w3.org/2001/XMLSchema}long (xs:anyAtomicType?)"?
 fo-test-fn-for-each-pair-001,Error: XPST0017: Function Q{http://www.w3.org/2005/xpath-functions}for-each-pair with arity of 3 not registered. Did you mean "Q{http://www.w3.org/2005/xpath-functions/array}for-each-pair (array(*), array(*), function(*))", "Q{http://www.w3.org/2005/xpath-functions/array}for-each (array(*), function(*))", "Q{http://www.w3.org/2005/xpath-functions/map}for-each (map(*), item()*)" or "Q{http://www.w3.org/2005/xpath-functions}for-each (item()*, function(*))"?
 fo-test-fn-for-each-pair-002,Error: XPST0017: Function Q{http://www.w3.org/2005/xpath-functions}for-each-pair with arity of 3 not registered. Did you mean "Q{http://www.w3.org/2005/xpath-functions/array}for-each-pair (array(*), array(*), function(*))", "Q{http://www.w3.org/2005/xpath-functions/array}for-each (array(*), function(*))", "Q{http://www.w3.org/2005/xpath-functions/map}for-each (map(*), item()*)" or "Q{http://www.w3.org/2005/xpath-functions}for-each (item()*, function(*))"?
 fo-test-fn-for-each-pair-003,Error: XPST0017: Function Q{http://www.w3.org/2005/xpath-functions}for-each-pair with arity of 3 not registered. Did you mean "Q{http://www.w3.org/2005/xpath-functions/array}for-each-pair (array(*), array(*), function(*))", "Q{http://www.w3.org/2005/xpath-functions/array}for-each (array(*), function(*))", "Q{http://www.w3.org/2005/xpath-functions/map}for-each (map(*), item()*)" or "Q{http://www.w3.org/2005/xpath-functions}for-each (item()*, function(*))"?
diff --git a/test/specs/parsing/functions/functions.node.tests.ts b/test/specs/parsing/functions/functions.node.tests.ts
index bdd9f877..520a8444 100644
--- a/test/specs/parsing/functions/functions.node.tests.ts
+++ b/test/specs/parsing/functions/functions.node.tests.ts
@@ -16,6 +16,113 @@ beforeEach(() => {
 });
 
 describe('functions over nodes', () => {
+	describe('generate-id()', () => {
+		it('returns the same value for the same node', () => {
+			jsonMlMapper.parse(['someElement'], documentNode);
+			chai.assert.isTrue(
+				evaluateXPathToBoolean('generate-id(/) = generate-id(/)', documentNode),
+			);
+		});
+
+		it('returns the empty string for the empty sequence', () => {
+			jsonMlMapper.parse(['someElement'], documentNode);
+			chai.assert.isTrue(evaluateXPathToBoolean('generate-id(()) = ""', documentNode));
+		});
+
+		it('throws the correct error when the context item is not a node', () => {
+			chai.assert.throws(
+				() => evaluateXPathToBoolean('"not a node" ! generate-id()'),
+				'XPTY0004',
+			);
+		});
+
+		it('returns the same value for subsequent calls', () => {
+			jsonMlMapper.parse(['someElement'], documentNode);
+			const id = evaluateXPathToString('generate-id(/)', documentNode);
+			chai.assert.equal(evaluateXPathToString('generate-id(/)', documentNode), id);
+		});
+	});
+
+	describe('lang()', () => {
+		it('returns true when the node has the right lang', () => {
+			jsonMlMapper.parse(['someElement', { 'xml:lang': 'en' }], documentNode);
+			chai.assert.equal(
+				evaluateXPathToBoolean('lang("en", .)', documentNode.firstChild),
+				true,
+			);
+		});
+
+		it('returns false when the node has the wrong lang', () => {
+			jsonMlMapper.parse(['someElement', { 'xml:lang': 'en' }], documentNode);
+			chai.assert.equal(
+				evaluateXPathToBoolean('lang("es", .)', documentNode.firstChild),
+				false,
+			);
+		});
+
+		it('returns true when the node has the right lang, but capitalized', () => {
+			jsonMlMapper.parse(['someElement', { 'xml:lang': 'EN' }], documentNode);
+			chai.assert.equal(
+				evaluateXPathToBoolean('lang("en", .)', documentNode.firstChild),
+				true,
+			);
+		});
+
+		it('returns true when the node has the right lang, but more specific', () => {
+			jsonMlMapper.parse(['someElement', { 'xml:lang': 'en-gb' }], documentNode);
+			chai.assert.equal(
+				evaluateXPathToBoolean('lang("en", .)', documentNode.firstChild),
+				true,
+			);
+		});
+
+		it('returns false when the node has the right lang, but not specific enough', () => {
+			jsonMlMapper.parse(['someElement', { 'xml:lang': 'en' }], documentNode);
+			chai.assert.equal(
+				evaluateXPathToBoolean('lang("en-gb", .)', documentNode.firstChild),
+				false,
+			);
+		});
+
+		it('returns true for implied context', () => {
+			jsonMlMapper.parse(['someElement', { 'xml:lang': 'en' }], documentNode);
+			chai.assert.equal(evaluateXPathToBoolean('lang("en")', documentNode.firstChild), true);
+		});
+
+		it('returns true when the parent is true', () => {
+			jsonMlMapper.parse(
+				['someElement', { 'xml:lang': 'en' }, ['child', 'Hello']],
+				documentNode,
+			);
+			chai.assert.equal(
+				evaluateXPathToBoolean('lang("en")', documentNode.firstChild.firstChild),
+				true,
+			);
+		});
+
+		it('returns false even if the parent is true', () => {
+			jsonMlMapper.parse(
+				['someElement', { 'xml:lang': 'en' }, ['child', { 'xml:lang': 'de' }, 'Hello']],
+				documentNode,
+			);
+			chai.assert.equal(
+				evaluateXPathToBoolean('lang("en")', documentNode.firstChild.firstChild),
+				false,
+			);
+		});
+
+		it('returns true even if the parent is false', () => {
+			jsonMlMapper.parse(
+				['someElement', { 'xml:lang': 'de' }, ['child', { 'xml:lang': 'en' }, 'Hello']],
+				documentNode,
+			);
+			chai.assert.equal(
+				evaluateXPathToBoolean('lang("en")', documentNode.firstChild.firstChild),
+				true,
+			);
+		});
+	});
+
 	describe('node-name()', () => {
 		it('returns an empty sequence if $arg is an empty sequence', () =>
 			chai.assert.isEmpty(evaluateXPathToStrings('node-name(())', documentNode)));
diff --git a/test/specs/parsing/functions/functions.string.tests.ts b/test/specs/parsing/functions/functions.string.tests.ts
index da3f5f9d..a3135c4a 100644
--- a/test/specs/parsing/functions/functions.string.tests.ts
+++ b/test/specs/parsing/functions/functions.string.tests.ts
@@ -95,6 +95,13 @@ describe('functions over strings', () => {
 			));
 	});
 
+	it('tokenize("abracadabra", "(ab)|(a)") returns ("","r","c","d","r","")', () => {
+		chai.assert.sameOrderedMembers(
+			evaluateXPathToStrings('fn:tokenize("abracadabra", "(ab)|(a)")'),
+			['', 'r', 'c', 'd', 'r', ''],
+		);
+	});
+
 	describe('normalize-space()', () => {
 		it('Returns the value of $arg with whitespace normalized by stripping leading and trailing whitespace and replacing sequences of one or more than one whitespace character with a single space, #x20.', () =>
 			chai.assert.equal(
@@ -223,6 +230,19 @@ describe('functions over strings', () => {
 			chai.assert.equal(evaluateXPathToString('string()', document), 'Some <CDATA>');
 		});
 
+		it('regards documentFragment nodes as normal parents', () => {
+			const document = new slimdom.Document();
+			const f = document.createDocumentFragment();
+			const foo = f.appendChild(document.createElement('foo'));
+			f.firstChild.appendChild(document.createTextNode('Test'));
+			f.appendChild(foo.cloneNode(true));
+			chai.assert.equal(
+				evaluateXPathToString('string($f)', undefined, undefined, { f }),
+				'TestTest',
+			);
+			chai.assert.equal(evaluateXPathToString('string(.)', f, undefined), 'TestTest');
+		});
+
 		it('If $arg is the empty sequence, the function returns the zero-length string.', () =>
 			chai.assert.equal(evaluateXPathToString('string(())', documentNode), ''));