Repository: svg/svgo
Pull request #1117 (2019-06-06 18:45:06)

Copy plugin params when initializing plugin by name
Fix for issue https://github.com/svg/svgo/issues/1026

`plugin.params` is referenced when plug-in is initialised by name, which causes any modification to parameters affect all images when parsing multiple images.


Patch:
diff --git a/.svgo.yml b/.svgo.yml
index eb02b2d..ab1e702 100644
--- a/.svgo.yml
+++ b/.svgo.yml
@@ -41,6 +41,7 @@ plugins:
   - removeHiddenElems
   - removeEmptyText
   - convertShapeToPath
+  - convertEllipseToCircle
   - moveElemsAttrsToGroup
   - moveGroupAttrsToElems
   - collapseGroups
diff --git a/.travis.yml b/.travis.yml
index 79f142c..69acf00 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,9 +1,9 @@
 language: node_js
 
 node_js:
-  - 4
   - 6
   - 8
+  - 10
 
 branches:
   only:
diff --git a/README.md b/README.md
index b2a9dc5..da9c4ab 100644
--- a/README.md
+++ b/README.md
@@ -56,8 +56,9 @@ Today we have:
 | [removeRasterImages](https://github.com/svg/svgo/blob/master/plugins/removeRasterImages.js) | remove raster images (disabled by default) |
 | [mergePaths](https://github.com/svg/svgo/blob/master/plugins/mergePaths.js) | merge multiple Paths into one |
 | [convertShapeToPath](https://github.com/svg/svgo/blob/master/plugins/convertShapeToPath.js) | convert some basic shapes to `<path>` |
+| [convertEllipseToCircle](https://github.com/svg/svgo/blob/master/plugins/convertEllipseToCircle.js) | convert non-eccentric `<ellipse>` to `<circle>` |
 | [sortAttrs](https://github.com/svg/svgo/blob/master/plugins/sortAttrs.js) | sort element attributes for epic readability (disabled by default) |
-| [removeDimensions](https://github.com/svg/svgo/blob/master/plugins/removeDimensions.js) | remove `width`/`height` attributes if `viewBox` is present (opposite to removeViewBox, disable it first) (disabled by default) |
+| [removeDimensions](https://github.com/svg/svgo/blob/master/plugins/removeDimensions.js) | remove `width`/`height` and add `viewBox` if it's missing (opposite to removeViewBox, disable it first) (disabled by default) |
 | [removeAttrs](https://github.com/svg/svgo/blob/master/plugins/removeAttrs.js) | remove attributes by pattern (disabled by default) |
 | [removeAttributesBySelector](https://github.com/svg/svgo/blob/master/plugins/removeAttributesBySelector.js) | removes attributes of elements that match a css selector (disabled by default) |
 | [removeElementsByAttr](https://github.com/svg/svgo/blob/master/plugins/removeElementsByAttr.js) | remove arbitrary elements by ID or className (disabled by default) |
@@ -97,7 +98,7 @@ Options:
   --disable=PLUGIN : Disable plugin by name, "--disable=PLUGIN1,PLUGIN2" for multiple plugins
   --enable=PLUGIN : Enable plugin by name, "--enable=PLUGIN3,PLUGIN4" for multiple plugins
   --datauri=DATAURI : Output as Data URI string (base64, URI encoded or unencoded)
-  --multipass : Pass over SVGs multiple times to ensure all optimizations are applied 
+  --multipass : Pass over SVGs multiple times to ensure all optimizations are applied
   --pretty : Make SVG pretty printed
   --indent=INDENT : Indent number when pretty printing SVGs
   -r, --recursive : Use with '-f'. Optimizes *.svg files in folders recursively.
diff --git a/README.ru.md b/README.ru.md
index a64c0e6..343729f 100644
--- a/README.ru.md
+++ b/README.ru.md
@@ -56,6 +56,7 @@ SVGO имеет расширяемую архитектуру, в которой
 | [removeRasterImages](https://github.com/svg/svgo/blob/master/plugins/removeRasterImages.js) | удаление растровых изображений (выключено по умолчанию) |
 | [mergePaths](https://github.com/svg/svgo/blob/master/plugins/mergePaths.js) | склеивание нескольких Path в одну кривую |
 | [convertShapeToPath](https://github.com/svg/svgo/blob/master/plugins/convertShapeToPath.js) | конвертирование простых форм в Path |
+| [convertEllipseToCircle](https://github.com/svg/svgo/blob/master/plugins/convertEllipseToCircle.js) | конвертирование вырожденного эллипса `<ellipse>` в круг `<circle>` |
 | [sortAttrs](https://github.com/svg/svgo/blob/master/plugins/sortAttrs.js) | сортировка атрибутов элементов для удобочитаемости (выключено по умолчанию) |
 | [removeDimensions](https://github.com/svg/svgo/blob/master/plugins/removeDimensions.js) | удаляет атрибуты width/height при наличии viewBox (противоречит removeViewBox — плагин должен быть выключен) (выключено по умолчанию) |
 | [removeAttrs](https://github.com/svg/svgo/blob/master/plugins/removeAttrs.js) | удаляет атрибуты по указанному паттерну (выключено по умолчанию) |
diff --git a/lib/svgo.js b/lib/svgo.js
index c9e9983..8331d81 100644
--- a/lib/svgo.js
+++ b/lib/svgo.js
@@ -81,6 +81,8 @@ SVGO.prototype.createContentItem = function(data) {
     return new JSAPI(data);
 };
 
+SVGO.Config = CONFIG;
+
 module.exports = SVGO;
 // Offer ES module interop compatibility.
 module.exports.default = SVGO;
diff --git a/lib/svgo/coa.js b/lib/svgo/coa.js
index 94fbc8b..1ac62ad 100644
--- a/lib/svgo/coa.js
+++ b/lib/svgo/coa.js
@@ -191,6 +191,7 @@ module.exports = require('coa').Cmd()
                         return printErrorAndExit(`Error: directory '${opts.config}' is not a config file.`);
                     }
                     config = YAML.safeLoad(configData);
+                    config.__DIR = PATH.dirname(configPath); // will use it to resolve custom plugins defined via path
 
                     if (!config || Array.isArray(config)) {
                         return printErrorAndExit(`Error: invalid config file '${opts.config}'.`);
diff --git a/lib/svgo/config.js b/lib/svgo/config.js
index 2f4abdc..909a531 100644
--- a/lib/svgo/config.js
+++ b/lib/svgo/config.js
@@ -1,6 +1,7 @@
 'use strict';
 
 var FS = require('fs');
+var PATH = require('path');
 var yaml = require('js-yaml');
 
 /**
@@ -23,11 +24,11 @@ module.exports = function(config) {
         defaults = config;
 
         if (Array.isArray(defaults.plugins)) {
-            defaults.plugins = preparePluginsArray(defaults.plugins);
+            defaults.plugins = preparePluginsArray(config, defaults.plugins);
         }
     } else {
         defaults = Object.assign({}, yaml.safeLoad(FS.readFileSync(__dirname + '/../../.svgo.yml', 'utf8')));
-        defaults.plugins = preparePluginsArray(defaults.plugins || []);
+        defaults.plugins = preparePluginsArray(config, defaults.plugins || []);
         defaults = extendConfig(defaults, config);
     }
 
@@ -55,10 +56,11 @@ module.exports = function(config) {
 /**
  * Require() all plugins in array.
  *
+ * @param {Object} config
  * @param {Array} plugins input plugins array
  * @return {Array} input plugins array of arrays
  */
-function preparePluginsArray(plugins) {
+function preparePluginsArray(config, plugins) {
 
     var plugin,
         key;
@@ -76,30 +78,22 @@ function preparePluginsArray(plugins) {
 
             } else {
 
-              plugin = Object.assign({}, require('../../plugins/' + key));
-
-              // name: {}
-              if (typeof item[key] === 'object') {
-                  plugin.params = Object.assign({}, plugin.params || {}, item[key]);
-                  plugin.active = true;
-
-              // name: false
-              } else if (item[key] === false) {
-                 plugin.active = false;
-
-              // name: true
-              } else if (item[key] === true) {
-                 plugin.active = true;
-              }
-
-              plugin.name = key;
+                plugin = setPluginActiveState(
+                    loadPlugin(config, key, item[key].path),
+                    item,
+                    key
+                );
+                plugin.name = key;
             }
 
         // name
         } else {
 
-            plugin = Object.assign({}, require('../../plugins/' + item));
+            plugin = loadPlugin(config, item);
             plugin.name = item;
+            if (typeof plugin.params === 'object') {
+                plugin.params = Object.assign({}, plugin.params);
+            }
 
         }
 
@@ -134,23 +128,15 @@ function extendConfig(defaults, config) {
                 if (typeof item[key] === 'object' && item[key].fn && typeof item[key].fn === 'function') {
                     defaults.plugins.push(setupCustomPlugin(key, item[key]));
 
+                // plugin defined via path
+                } else if (typeof item[key] === 'object' && item[key].path) {
+                    defaults.plugins.push(setPluginActiveState(loadPlugin(config, undefined, item[key].path), item, key));
+
                 } else {
                     defaults.plugins.forEach(function(plugin) {
 
                         if (plugin.name === key) {
-                            // name: {}
-                            if (typeof item[key] === 'object') {
-                                plugin.params = Object.assign({}, plugin.params || {}, item[key]);
-                                plugin.active = true;
-
-                            // name: false
-                            } else if (item[key] === false) {
-                               plugin.active = false;
-
-                            // name: true
-                            } else if (item[key] === true) {
-                               plugin.active = true;
-                            }
+                            plugin = setPluginActiveState(plugin, item, key);
                         }
                     });
                 }
@@ -212,3 +198,49 @@ function optimizePluginsArray(plugins) {
     }, []);
 
 }
+
+/**
+ * Sets plugin to active or inactive state.
+ *
+ * @param {Object} plugin
+ * @param {Object} item
+ * @param {Object} key
+ * @return {Object} plugin
+ */
+function setPluginActiveState(plugin, item, key) {
+    // name: {}
+    if (typeof item[key] === 'object') {
+        plugin.params = Object.assign({}, plugin.params || {}, item[key]);
+        plugin.active = true;
+
+    // name: false
+    } else if (item[key] === false) {
+        plugin.active = false;
+
+    // name: true
+    } else if (item[key] === true) {
+        plugin.active = true;
+    }
+
+    return plugin;
+}
+
+/**
+ * Loads default plugin using name or custom plugin defined via path in config.
+ *
+ * @param {Object} config
+ * @param {Object} name
+ * @param {Object} path
+ * @return {Object} plugin
+ */
+function loadPlugin(config, name, path) {
+    var plugin;
+
+    if (!path) {
+        plugin = require('../../plugins/' + name);
+    } else {
+        plugin = require(PATH.resolve(config.__DIR, path));
+    }
+
+    return Object.assign({}, plugin);
+}
diff --git a/lib/svgo/tools.js b/lib/svgo/tools.js
index c6b3c80..ed426d4 100644
--- a/lib/svgo/tools.js
+++ b/lib/svgo/tools.js
@@ -10,33 +10,23 @@ var FS = require('fs');
  * @return {String} output string
  */
 exports.encodeSVGDatauri = function(str, type) {
-
     var prefix = 'data:image/svg+xml';
-
-    // base64
     if (!type || type === 'base64') {
-
+        // base64
         prefix += ';base64,';
         if (Buffer.from) {
             str = prefix + Buffer.from(str).toString('base64');
         } else {
             str = prefix + new Buffer(str).toString('base64');
         }
-        
-    // URI encoded
     } else if (type === 'enc') {
-
+        // URI encoded
         str = prefix + ',' + encodeURIComponent(str);
-
-    // unencoded
     } else if (type === 'unenc') {
-
+        // unencoded
         str = prefix + ',' + str;
-
     }
-
     return str;
-
 };
 
 /**
@@ -54,23 +44,16 @@ exports.decodeSVGDatauri = function(str) {
 
     var data = match[3];
 
-    // base64
     if (match[2]) {
-
+        // base64
         str = new Buffer(data, 'base64').toString('utf8');
-
-    // URI encoded
     } else if (data.charAt(0) === '%') {
-
+        // URI encoded
         str = decodeURIComponent(data);
-
-    // unencoded
     } else if (data.charAt(0) === '<') {
-
+        // unencoded
         str = data;
-
     }
-
     return str;
 };
 
@@ -80,20 +63,33 @@ exports.intersectArrays = function(a, b) {
     });
 };
 
-exports.cleanupOutData = function(data, params) {
-
+/**
+ * Convert a row of numbers to an optimized string view.
+ *
+ * @example
+ * [0, -1, .5, .5] → "0-1 .5.5"
+ *
+ * @param {number[]} data
+ * @param {Object} params
+ * @param {string?} command path data instruction
+ * @return {string}
+ */
+exports.cleanupOutData = function(data, params, command) {
     var str = '',
         delimiter,
         prev;
 
     data.forEach(function(item, i) {
-
         // space delimiter by default
         delimiter = ' ';
 
         // no extra space in front of first number
-        if (i === 0) {
-            delimiter = '';
+        if (i == 0) delimiter = '';
+
+        // no extra space after 'arcto' command flags
+        if (params.noSpaceAfterFlags && (command == 'A' || command == 'a')) {
+            var pos = i % 7;
+            if (pos == 4 || pos == 5) delimiter = '';
         }
 
         // remove floating-point numbers leading zeros
@@ -107,22 +103,18 @@ exports.cleanupOutData = function(data, params) {
         // in front of a floating number if a previous number is floating too
         if (
             params.negativeExtraSpace &&
+            delimiter != '' &&
             (item < 0 ||
                 (String(item).charCodeAt(0) == 46 && prev % 1 !== 0)
             )
         ) {
             delimiter = '';
         }
-
         // save prev item value
         prev = item;
-
         str += delimiter + item;
-
     });
-
     return str;
-
 };
 
 /**
@@ -146,9 +138,7 @@ var removeLeadingZero = exports.removeLeadingZero = function(num) {
     } else if (-1 < num && num < 0 && strNum.charCodeAt(1) == 48) {
         strNum = strNum.charAt(0) + strNum.slice(2);
     }
-
     return strNum;
-
 };
 
 
diff --git a/package-lock.json b/package-lock.json
index 4acd3ff..32aaff3 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -16,9 +16,9 @@
       "dev": true
     },
     "ajv": {
-      "version": "6.9.2",
-      "resolved": "https://registry.npmjs.org/ajv/-/ajv-6.9.2.tgz",
-      "integrity": "sha512-4UFy0/LgDo7Oa/+wOAlj44tp9K78u38E5/359eSrqEp1Z5PdVfimCcs7SluXMP755RUQu6d2b4AvF0R1C9RZjg==",
+      "version": "6.10.1",
+      "resolved": "https://registry.npmjs.org/ajv/-/ajv-6.10.1.tgz",
+      "integrity": "sha512-w1YQaVGNC6t2UCPjEawK/vo/dG8OOrVtUmhBT1uJJYxbl5kU2Tj3v6LGqBcsysN1yhuCStJCCA3GqdvKY8sqXQ==",
       "dev": true,
       "requires": {
         "fast-deep-equal": "^2.0.1",
@@ -34,6 +34,18 @@
       "dev": true,
       "optional": true
     },
+    "ansi-colors": {
+      "version": "3.2.3",
+      "resolved": "https://registry.npmjs.org/ansi-colors/-/ansi-colors-3.2.3.tgz",
+      "integrity": "sha512-LEHHyuhlPY3TmuUYMh2oz89lTShfvgbmzaBcxve9t/9Wuy7Dwf4yoAKcND7KFT1HAQfqZ12qtc+DUrBMeKF9nw==",
+      "dev": true
+    },
+    "ansi-regex": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-3.0.0.tgz",
+      "integrity": "sha1-7QMXwyIGT3lGbAKWa922Bas32Zg=",
+      "dev": true
+    },
     "ansi-styles": {
       "version": "3.2.1",
       "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-3.2.1.tgz",
@@ -120,9 +132,15 @@
       }
     },
     "browser-stdout": {
-      "version": "1.3.0",
-      "resolved": "https://registry.npmjs.org/browser-stdout/-/browser-stdout-1.3.0.tgz",
-      "integrity": "sha1-81HTKWnTL6XXpVZxVCY9korjvR8=",
+      "version": "1.3.1",
+      "resolved": "https://registry.npmjs.org/browser-stdout/-/browser-stdout-1.3.1.tgz",
+      "integrity": "sha512-qhAVI1+Av2X7qelOfAIYwXONood6XlZE/fXaBSmW/T5SzLAmCgzi+eiWE7fUvbHaeNBQH13UftjpXxsfLkMpgw==",
+      "dev": true
+    },
+    "camelcase": {
+      "version": "5.3.1",
+      "resolved": "https://registry.npmjs.org/camelcase/-/camelcase-5.3.1.tgz",
+      "integrity": "sha512-L28STB170nwWS63UjtlEOE3dldQApaJXZkOI1uMFfzf3rRuPegHaHesyee+YxQ+W6SvRDQV6UrdOdRiR153wJg==",
       "dev": true
     },
     "caseless": {
@@ -167,9 +185,9 @@
       },
       "dependencies": {
         "glob": {
-          "version": "7.1.3",
-          "resolved": "https://registry.npmjs.org/glob/-/glob-7.1.3.tgz",
-          "integrity": "sha512-vcfuiIxogLV4DlGBHIUOwI0IbrJ8HWPc4MU7HzviGeNho/UJDfi6B5p3sHeWIQ0KGIU0Jpxi5ZHxemQfLkkAwQ==",
+          "version": "7.1.4",
+          "resolved": "https://registry.npmjs.org/glob/-/glob-7.1.4.tgz",
+          "integrity": "sha512-hkLPepehmnKk41pUGm3sYxoFs/umurYfYJCerbXEyFIWcAzvpipAgVkBqqT9RBKMGjnq6kMuyYwha6csxbiM1A==",
           "dev": true,
           "requires": {
             "fs.realpath": "^1.0.0",
@@ -182,6 +200,17 @@
         }
       }
     },
+    "cliui": {
+      "version": "4.1.0",
+      "resolved": "https://registry.npmjs.org/cliui/-/cliui-4.1.0.tgz",
+      "integrity": "sha512-4FG+RSG9DL7uEwRUZXZn3SS34DiDPfzP0VOiEwtUWlE+AR2EIg+hSyvrIgUUfhdgR/UkAeW2QHgeP+hWrXs7jQ==",
+      "dev": true,
+      "requires": {
+        "string-width": "^2.1.1",
+        "strip-ansi": "^4.0.0",
+        "wrap-ansi": "^2.0.0"
+      }
+    },
     "coa": {
       "version": "2.0.2",
       "resolved": "https://registry.npmjs.org/coa/-/coa-2.0.2.tgz",
@@ -192,6 +221,12 @@
         "q": "^1.1.2"
       }
     },
+    "code-point-at": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/code-point-at/-/code-point-at-1.1.0.tgz",
+      "integrity": "sha1-DQcLTQQ6W+ozovGkDi7bPZpMz3c=",
+      "dev": true
+    },
     "color-convert": {
       "version": "1.9.3",
       "resolved": "https://registry.npmjs.org/color-convert/-/color-convert-1.9.3.tgz",
@@ -206,20 +241,14 @@
       "integrity": "sha1-p9BVi9icQveV3UIyj3QIMcpTvCU="
     },
     "combined-stream": {
-      "version": "1.0.7",
-      "resolved": "https://registry.npmjs.org/combined-stream/-/combined-stream-1.0.7.tgz",
-      "integrity": "sha512-brWl9y6vOB1xYPZcpZde3N9zDByXTosAeMDo4p1wzo6UMOX4vumB+TP1RZ76sfE6Md68Q0NJSrE/gbezd4Ul+w==",
+      "version": "1.0.8",
+      "resolved": "https://registry.npmjs.org/combined-stream/-/combined-stream-1.0.8.tgz",
+      "integrity": "sha512-FQN4MRfuJeHf7cBbBMJFXhKSDq+2kAArBlmRBvcvFE5BB1HZKXtSFASDhdlz9zOYwxh8lDdnvmMOe/+5cdoEdg==",
       "dev": true,
       "requires": {
         "delayed-stream": "~1.0.0"
       }
     },
-    "commander": {
-      "version": "2.11.0",
-      "resolved": "https://registry.npmjs.org/commander/-/commander-2.11.0.tgz",
-      "integrity": "sha512-b0553uYA5YAEGgyYIGYROzKQ7X5RAqedkfjiZxwi0kL1g3bOaBNNZfYkzt/CL0umgD5wc9Jec2FbB98CjkMRvQ==",
-      "dev": true
-    },
     "concat-map": {
       "version": "0.0.1",
       "resolved": "https://registry.npmjs.org/concat-map/-/concat-map-0.0.1.tgz",
@@ -242,13 +271,13 @@
       "dev": true
     },
     "coveralls": {
-      "version": "3.0.3",
-      "resolved": "https://registry.npmjs.org/coveralls/-/coveralls-3.0.3.tgz",
-      "integrity": "sha512-viNfeGlda2zJr8Gj1zqXpDMRjw9uM54p7wzZdvLRyOgnAfCe974Dq4veZkjJdxQXbmdppu6flEajFYseHYaUhg==",
+      "version": "3.0.5",
+      "resolved": "https://registry.npmjs.org/coveralls/-/coveralls-3.0.5.tgz",
+      "integrity": "sha512-/KD7PGfZv/tjKB6LoW97jzIgFqem0Tu9tZL9/iwBnBd8zkIZp7vT1ZSHNvnr0GSQMV/LTMxUstWg8WcDDUVQKg==",
       "dev": true,
       "requires": {
         "growl": "~> 1.10.0",
-        "js-yaml": "^3.11.0",
+        "js-yaml": "^3.13.1",
         "lcov-parse": "^0.0.10",
         "log-driver": "^1.2.7",
         "minimist": "^1.2.0",
@@ -263,6 +292,19 @@
         }
       }
     },
+    "cross-spawn": {
+      "version": "6.0.5",
+      "resolved": "https://registry.npmjs.org/cross-spawn/-/cross-spawn-6.0.5.tgz",
+      "integrity": "sha512-eTVLrBSt7fjbDygz805pMnstIs2VTBNkRm0qxZd+M7A5XDdxVRWO5MxGBXZhjY4cqLYLdtrGqRf8mBPmzwSpWQ==",
+      "dev": true,
+      "requires": {
+        "nice-try": "^1.0.4",
+        "path-key": "^2.0.1",
+        "semver": "^5.5.0",
+        "shebang-command": "^1.2.0",
+        "which": "^1.2.9"
+      }
+    },
     "css-select": {
       "version": "2.0.2",
       "resolved": "https://registry.npmjs.org/css-select/-/css-select-2.0.2.tgz",
@@ -280,19 +322,21 @@
       "integrity": "sha512-jQVeeRG70QI08vSTwf1jHxp74JoZsr2XSgETae8/xC8ovSnL2WF87GTLO86Sbwdt2lK4Umg4HnnwMO4YF3Ce7w=="
     },
     "css-tree": {
-      "version": "1.0.0-alpha.28",
-      "resolved": "https://registry.npmjs.org/css-tree/-/css-tree-1.0.0-alpha.28.tgz",
-      "integrity": "sha512-joNNW1gCp3qFFzj4St6zk+Wh/NBv0vM5YbEreZk0SD4S23S+1xBKb6cLDg2uj4P4k/GUMlIm6cKIDqIG+vdt0w==",
+      "version": "1.0.0-alpha.33",
+      "resolved": "https://registry.npmjs.org/css-tree/-/css-tree-1.0.0-alpha.33.tgz",
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+      "version": "0.1.2",
+      "resolved": "https://registry.npmjs.org/universalify/-/universalify-0.1.2.tgz",
+      "integrity": "sha512-rBJeI5CXAlmy1pV+617WB9J63U6XcazHHF2f2dbJix4XzpUF0RS3Zbj0FGIOCAva5P/d/GBOYaACQ1w+0azUkg==",
       "dev": true
     },
     "unquote": {
@@ -1444,17 +1857,197 @@
         "isexe": "^2.0.0"
       }
     },
+    "which-module": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/which-module/-/which-module-2.0.0.tgz",
+      "integrity": "sha1-2e8H3Od7mQK4o6j6SzHD4/fm6Ho=",
+      "dev": true
+    },
+    "wide-align": {
+      "version": "1.1.3",
+      "resolved": "https://registry.npmjs.org/wide-align/-/wide-align-1.1.3.tgz",
+      "integrity": "sha512-QGkOQc8XL6Bt5PwnsExKBPuMKBxnGxWWW3fU55Xt4feHozMUhdUMaBCk290qpm/wG5u/RSKzwdAC4i51YigihA==",
+      "dev": true,
+      "requires": {
+        "string-width": "^1.0.2 || 2"
+      }
+    },
     "wordwrap": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/wordwrap/-/wordwrap-1.0.0.tgz",
       "integrity": "sha1-J1hIEIkUVqQXHI0CJkQa3pDLyus=",
       "dev": true
     },
+    "wrap-ansi": {
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/wrap-ansi/-/wrap-ansi-2.1.0.tgz",
+      "integrity": "sha1-2Pw9KE3QV5T+hJc8rs3Rz4JP3YU=",
+      "dev": true,
+      "requires": {
+        "string-width": "^1.0.1",
+        "strip-ansi": "^3.0.1"
+      },
+      "dependencies": {
+        "ansi-regex": {
+          "version": "2.1.1",
+          "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-2.1.1.tgz",
+          "integrity": "sha1-w7M6te42DYbg5ijwRorn7yfWVN8=",
+          "dev": true
+        },
+        "is-fullwidth-code-point": {
+          "version": "1.0.0",
+          "resolved": "https://registry.npmjs.org/is-fullwidth-code-point/-/is-fullwidth-code-point-1.0.0.tgz",
+          "integrity": "sha1-754xOG8DGn8NZDr4L95QxFfvAMs=",
+          "dev": true,
+          "requires": {
+            "number-is-nan": "^1.0.0"
+          }
+        },
+        "string-width": {
+          "version": "1.0.2",
+          "resolved": "https://registry.npmjs.org/string-width/-/string-width-1.0.2.tgz",
+          "integrity": "sha1-EYvfW4zcUaKn5w0hHgfisLmxB9M=",
+          "dev": true,
+          "requires": {
+            "code-point-at": "^1.0.0",
+            "is-fullwidth-code-point": "^1.0.0",
+            "strip-ansi": "^3.0.0"
+          }
+        },
+        "strip-ansi": {
+          "version": "3.0.1",
+          "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-3.0.1.tgz",
+          "integrity": "sha1-ajhfuIU9lS1f8F0Oiq+UJ43GPc8=",
+          "dev": true,
+          "requires": {
+            "ansi-regex": "^2.0.0"
+          }
+        }
+      }
+    },
     "wrappy": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
       "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8=",
       "dev": true
+    },
+    "y18n": {
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/y18n/-/y18n-4.0.0.tgz",
+      "integrity": "sha512-r9S/ZyXu/Xu9q1tYlpsLIsa3EeLXXk0VwlxqTcFRfg9EhMW+17kbt9G0NrgCmhGb5vT2hyhJZLfDGx+7+5Uj/w==",
+      "dev": true
+    },
+    "yargs": {
+      "version": "13.2.2",
+      "resolved": "https://registry.npmjs.org/yargs/-/yargs-13.2.2.tgz",
+      "integrity": "sha512-WyEoxgyTD3w5XRpAQNYUB9ycVH/PQrToaTXdYXRdOXvEy1l19br+VJsc0vcO8PTGg5ro/l/GY7F/JMEBmI0BxA==",
+      "dev": true,
+      "requires": {
+        "cliui": "^4.0.0",
+        "find-up": "^3.0.0",
+        "get-caller-file": "^2.0.1",
+        "os-locale": "^3.1.0",
+        "require-directory": "^2.1.1",
+        "require-main-filename": "^2.0.0",
+        "set-blocking": "^2.0.0",
+        "string-width": "^3.0.0",
+        "which-module": "^2.0.0",
+        "y18n": "^4.0.0",
+        "yargs-parser": "^13.0.0"
+      },
+      "dependencies": {
+        "ansi-regex": {
+          "version": "4.1.0",
+          "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-4.1.0.tgz",
+          "integrity": "sha512-1apePfXM1UOSqw0o9IiFAovVz9M5S1Dg+4TrDwfMewQ6p/rmMueb7tWZjQ1rx4Loy1ArBggoqGpfqqdI4rondg==",
+          "dev": true
+        },
+        "string-width": {
+          "version": "3.1.0",
+          "resolved": "https://registry.npmjs.org/string-width/-/string-width-3.1.0.tgz",
+          "integrity": "sha512-vafcv6KjVZKSgz06oM/H6GDBrAtz8vdhQakGjFIvNrHA6y3HCF1CInLy+QLq8dTJPQ1b+KDUqDFctkdRW44e1w==",
+          "dev": true,
+          "requires": {
+            "emoji-regex": "^7.0.1",
+            "is-fullwidth-code-point": "^2.0.0",
+            "strip-ansi": "^5.1.0"
+          }
+        },
+        "strip-ansi": {
+          "version": "5.2.0",
+          "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-5.2.0.tgz",
+          "integrity": "sha512-DuRs1gKbBqsMKIZlrffwlug8MHkcnpjs5VPmL1PAh+mA30U0DTotfDZ0d2UUsXpPmPmMMJ6W773MaA3J+lbiWA==",
+          "dev": true,
+          "requires": {
+            "ansi-regex": "^4.1.0"
+          }
+        }
+      }
+    },
+    "yargs-parser": {
+      "version": "13.0.0",
+      "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-13.0.0.tgz",
+      "integrity": "sha512-w2LXjoL8oRdRQN+hOyppuXs+V/fVAYtpcrRxZuF7Kt/Oc+Jr2uAcVntaUTNT6w5ihoWfFDpNY8CPx1QskxZ/pw==",
+      "dev": true,
+      "requires": {
+        "camelcase": "^5.0.0",
+        "decamelize": "^1.2.0"
+      }
+    },
+    "yargs-unparser": {
+      "version": "1.5.0",
+      "resolved": "https://registry.npmjs.org/yargs-unparser/-/yargs-unparser-1.5.0.tgz",
+      "integrity": "sha512-HK25qidFTCVuj/D1VfNiEndpLIeJN78aqgR23nL3y4N0U/91cOAzqfHlF8n2BvoNDcZmJKin3ddNSvOxSr8flw==",
+      "dev": true,
+      "requires": {
+        "flat": "^4.1.0",
+        "lodash": "^4.17.11",
+        "yargs": "^12.0.5"
+      },
+      "dependencies": {
+        "get-caller-file": {
+          "version": "1.0.3",
+          "resolved": "https://registry.npmjs.org/get-caller-file/-/get-caller-file-1.0.3.tgz",
+          "integrity": "sha512-3t6rVToeoZfYSGd8YoLFR2DJkiQrIiUrGcjvFX2mDw3bn6k2OtwHN0TNCLbBO+w8qTvimhDkv+LSscbJY1vE6w==",
+          "dev": true
+        },
+        "require-main-filename": {
+          "version": "1.0.1",
+          "resolved": "https://registry.npmjs.org/require-main-filename/-/require-main-filename-1.0.1.tgz",
+          "integrity": "sha1-l/cXtp1IeE9fUmpsWqj/3aBVpNE=",
+          "dev": true
+        },
+        "yargs": {
+          "version": "12.0.5",
+          "resolved": "https://registry.npmjs.org/yargs/-/yargs-12.0.5.tgz",
+          "integrity": "sha512-Lhz8TLaYnxq/2ObqHDql8dX8CJi97oHxrjUcYtzKbbykPtVW9WB+poxI+NM2UIzsMgNCZTIf0AQwsjK5yMAqZw==",
+          "dev": true,
+          "requires": {
+            "cliui": "^4.0.0",
+            "decamelize": "^1.2.0",
+            "find-up": "^3.0.0",
+            "get-caller-file": "^1.0.1",
+            "os-locale": "^3.0.0",
+            "require-directory": "^2.1.1",
+            "require-main-filename": "^1.0.1",
+            "set-blocking": "^2.0.0",
+            "string-width": "^2.0.0",
+            "which-module": "^2.0.0",
+            "y18n": "^3.2.1 || ^4.0.0",
+            "yargs-parser": "^11.1.1"
+          }
+        },
+        "yargs-parser": {
+          "version": "11.1.1",
+          "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-11.1.1.tgz",
+          "integrity": "sha512-C6kB/WJDiaxONLJQnF8ccx9SEeoTTLek8RVbaOIsrAUS8VrBEXfmeSnCZxygc+XC2sNMBIwOOnfcxiynjHsVSQ==",
+          "dev": true,
+          "requires": {
+            "camelcase": "^5.0.0",
+            "decamelize": "^1.2.0"
+          }
+        }
+      }
     }
   }
 }
diff --git a/package.json b/package.json
index 4bd3e52..d05d28c 100644
--- a/package.json
+++ b/package.json
@@ -52,8 +52,7 @@
     "coa": "^2.0.2",
     "css-select": "^2.0.0",
     "css-select-base-adapter": "^0.1.1",
-    "css-tree": "1.0.0-alpha.28",
-    "css-url-regex": "^1.1.0",
+    "css-tree": "1.0.0-alpha.33",
     "csso": "^3.5.1",
     "js-yaml": "^3.13.1",
     "mkdirp": "~0.5.1",
@@ -64,14 +63,14 @@
     "util.promisify": "~1.0.0"
   },
   "devDependencies": {
-    "coveralls": "^3.0.3",
-    "fs-extra": "~4.0.3",
+    "coveralls": "^3.0.5",
+    "fs-extra": "~8.1.0",
     "istanbul": "~0.4.5",
-    "jshint": "~2.9.5",
-    "mocha": "~4.0.1",
+    "jshint": "~2.10.2",
+    "mocha": "~6.1.4",
     "mocha-istanbul": "~0.3.0",
     "mock-stdin": "~0.3.1",
-    "should": "~13.1.2"
+    "should": "~13.2.3"
   },
   "engines": {
     "node": ">=4.0.0"
diff --git a/plugins/_path.js b/plugins/_path.js
index 5b1687c..bb613c6 100644
--- a/plugins/_path.js
+++ b/plugins/_path.js
@@ -553,7 +553,11 @@ exports.js2path = function(path, data, params) {
     }
 
     path.attr('d').value = data.reduce(function(pathString, item) {
-        return pathString += item.instruction + (item.data ? cleanupOutData(item.data, params) : '');
+        var strData = '';
+        if (item.data) {
+            strData = cleanupOutData(item.data, params, item.instruction);
+        }
+        return pathString += item.instruction + strData;
     }, '');
 
 };
diff --git a/plugins/convertEllipseToCircle.js b/plugins/convertEllipseToCircle.js
new file mode 100644
index 0000000..f1af11a
--- /dev/null
+++ b/plugins/convertEllipseToCircle.js
@@ -0,0 +1,39 @@
+'use strict';
+
+exports.type = 'perItem';
+
+exports.active = true;
+
+exports.description = 'converts non-eccentric <ellipse>s to <circle>s';
+
+/**
+ * Converts non-eccentric <ellipse>s to <circle>s.
+ *
+ * @see http://www.w3.org/TR/SVG/shapes.html
+ *
+ * @param {Object} item current iteration item
+ * @return {Boolean} if false, item will be filtered out
+ *
+ * @author Taylor Hunt
+ */
+exports.fn = function(item) {
+    if (item.isElem('ellipse')) {
+      var rx = item.attr('rx').value || 0;
+      var ry = item.attr('ry').value || 0;
+
+      if (rx === ry ||
+          rx === 'auto' || ry === 'auto' // SVG2
+         ) {
+        var radius = rx !== 'auto' ? rx : ry;
+        item.renameElem('circle');
+        item.removeAttr(['rx', 'ry']);
+        item.addAttr({
+            name: 'r',
+            value: radius,
+            prefix: '',
+            local: 'r',
+          });
+      }
+  }
+  return;
+};
diff --git a/plugins/convertPathData.js b/plugins/convertPathData.js
index 23b18fe..0eb9ad0 100644
--- a/plugins/convertPathData.js
+++ b/plugins/convertPathData.js
@@ -23,6 +23,7 @@ exports.params = {
     utilizeAbsolute: true,
     leadingZero: true,
     negativeExtraSpace: true,
+    noSpaceAfterFlags: true,
     forceAbsolutePath: false
 };
 
@@ -960,6 +961,10 @@ function findArcAngle(curve, relCircle) {
 
 function data2Path(params, pathData) {
     return pathData.reduce(function(pathString, item) {
-        return pathString + item.instruction + (item.data ? cleanupOutData(roundData(item.data.slice()), params) : '');
+        var strData = '';
+        if (item.data) {
+            strData = cleanupOutData(roundData(item.data.slice()), params);
+        }
+        return pathString + item.instruction + strData;
     }, '');
 }
diff --git a/plugins/mergePaths.js b/plugins/mergePaths.js
index 63cf56e..9d3c570 100644
--- a/plugins/mergePaths.js
+++ b/plugins/mergePaths.js
@@ -8,8 +8,10 @@ exports.description = 'merges multiple paths in one if possible';
 
 exports.params = {
     collapseRepeated: true,
+    force: false,
     leadingZero: true,
-    negativeExtraSpace: true
+    negativeExtraSpace: true,
+    noSpaceAfterFlags: true
 };
 
 var path2js = require('./_path.js').path2js,
@@ -56,7 +58,7 @@ exports.fn = function(item, params) {
                 prevPathJS = path2js(prevContentItem),
                 curPathJS = path2js(contentItem);
 
-            if (equalData && !intersects(prevPathJS, curPathJS)) {
+            if (params.force || equalData && !intersects(prevPathJS, curPathJS)) {
                 js2path(prevContentItem, prevPathJS.concat(curPathJS), params);
                 return false;
             }
diff --git a/plugins/prefixIds.js b/plugins/prefixIds.js
index 906a79b..d81fd0c 100644
--- a/plugins/prefixIds.js
+++ b/plugins/prefixIds.js
@@ -5,7 +5,9 @@ exports.type = 'perItem';
 exports.active = false;
 
 exports.params = {
-    delim: '__'
+    delim: '__',
+    prefixIds: true,
+    prefixClassNames: true,
 };
 
 exports.description = 'prefix IDs';
@@ -13,7 +15,6 @@ exports.description = 'prefix IDs';
 
 var path = require('path'),
     csstree = require('css-tree'),
-    cssRx = require('css-url-regex'),
     unquote = require('unquote'),
     collections = require('./_collections.js'),
     referencesProps = collections.referencesProps,
@@ -37,7 +38,7 @@ var matchId = function(urlVal) {
 
 // Matches an url(...) value, captures the URL
 var matchUrl = function(val) {
-    var urlMatches = cssRx().exec(val);
+    var urlMatches = /url\((.*?)\)/gi.exec(val);
     if (urlMatches === null) {
         return false;
     }
@@ -174,8 +175,8 @@ exports.fn = function(node, opts, extra) {
         csstree.walk(cssAst, function(node) {
 
             // #ID, .class
-            if ((node.type === 'IdSelector' ||
-                 node.type === 'ClassSelector') &&
+            if (((opts.prefixIds        && node.type === 'IdSelector') ||
+                 (opts.prefixClassNames && node.type === 'ClassSelector')) &&
                  node.name) {
                 node.name = addPrefix(node.name);
                 return;
@@ -205,11 +206,21 @@ exports.fn = function(node, opts, extra) {
         return node;
     }
 
-    // ID
-    addPrefixToIdAttr(node.attrs.id);
 
-    // Class
-    addPrefixToClassAttr(node.attrs.class);
+    // Nodes
+
+    if(opts.prefixIds) {
+        // ID
+        addPrefixToIdAttr(node.attrs.id);
+    }
+
+    if(opts.prefixClassNames) {
+        // Class
+        addPrefixToClassAttr(node.attrs.class);
+    }
+
+
+    // References
 
     // href
     addPrefixToHrefAttr(node.attrs.href);
@@ -217,7 +228,7 @@ exports.fn = function(node, opts, extra) {
     // (xlink:)href (deprecated, must be still supported)
     addPrefixToHrefAttr(node.attrs['xlink:href']);
 
-    // referenceable properties
+    // (referenceable) properties
     for (var referencesProp of referencesProps) {
         addPrefixToUrlAttr(node.attrs[referencesProp]);
     }
diff --git a/plugins/removeDimensions.js b/plugins/removeDimensions.js
index 3209960..7cbd65c 100644
--- a/plugins/removeDimensions.js
+++ b/plugins/removeDimensions.js
@@ -7,12 +7,12 @@ exports.active = false;
 exports.description = 'removes width and height in presence of viewBox (opposite to removeViewBox, disable it first)';
 
 /**
- * Remove width/height attributes when a viewBox attribute is present.
+ * Remove width/height attributes and add the viewBox attribute if it's missing
  *
  * @example
- * <svg width="100" height="50" viewBox="0 0 100 50">
+ * <svg width="100" height="50" />
  *   ↓
- * <svg viewBox="0 0 100 50">
+ * <svg viewBox="0 0 100 50" />
  *
  * @param {Object} item current iteration item
  * @return {Boolean} if true, with and height will be filtered out
@@ -21,12 +21,29 @@ exports.description = 'removes width and height in presence of viewBox (opposite
  */
 exports.fn = function(item) {
 
-    if (
-        item.isElem('svg') &&
-        item.hasAttr('viewBox')
-    ) {
-        item.removeAttr('width');
-        item.removeAttr('height');
+    if (item.isElem('svg')) {
+        if (item.hasAttr('viewBox')) {
+            item.removeAttr('width');
+            item.removeAttr('height');
+        } else if (
+            item.hasAttr('width') &&
+            item.hasAttr('height') &&
+            !isNaN(Number(item.attr('width').value)) &&
+            !isNaN(Number(item.attr('height').value))
+        ) {
+            item.addAttr({
+                name: 'viewBox',
+                value:
+                    '0 0 ' +
+                    Number(item.attr('width').value) +
+                    ' ' +
+                    Number(item.attr('height').value),
+                prefix: '',
+                local: 'viewBox'
+            });
+            item.removeAttr('width');
+            item.removeAttr('height');
+        }
     }
 
 };
diff --git a/plugins/sortDefsChildren.js b/plugins/sortDefsChildren.js
index ea85a4d..bf1d1c4 100644
--- a/plugins/sortDefsChildren.js
+++ b/plugins/sortDefsChildren.js
@@ -37,7 +37,7 @@ exports.fn = function(item) {
                 if (lengthComparison !== 0) {
                     return lengthComparison;
                 }
-                return a.elem > b.elem;
+                return a.elem != b.elem ? a.elem > b.elem ? -1 : 1 : 0;
             });
         }
 


Test patch:
diff --git a/test/coa/testSvg/test.1.svg b/test/coa/testSvg/test.1.svg
index de7975d..78b902d 100644
--- a/test/coa/testSvg/test.1.svg
+++ b/test/coa/testSvg/test.1.svg
@@ -1,1 +1,1 @@
-<!--! https://github.com/svg/svgo--><!--! 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diff --git a/test/coa/testSvg/test.svg b/test/coa/testSvg/test.svg
index de7975d..78b902d 100644
--- a/test/coa/testSvg/test.svg
+++ b/test/coa/testSvg/test.svg
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diff --git a/test/plugins/convertEllipseToCircle.01.svg b/test/plugins/convertEllipseToCircle.01.svg
new file mode 100644
index 0000000..b1146df
--- /dev/null
+++ b/test/plugins/convertEllipseToCircle.01.svg
@@ -0,0 +1,13 @@
+<svg xmlns="http://www.w3.org/2000/svg">
+    <ellipse rx="5" ry="5"/>
+    <ellipse rx="auto" ry="5"/>
+    <ellipse rx="5" ry="auto"/>
+</svg>
+
+@@@
+
+<svg xmlns="http://www.w3.org/2000/svg">
+    <circle r="5"/>
+    <circle r="5"/>
+    <circle r="5"/>
+</svg>
diff --git a/test/plugins/convertPathData.02.svg b/test/plugins/convertPathData.02.svg
index c950860..b2334d6 100644
--- a/test/plugins/convertPathData.02.svg
+++ b/test/plugins/convertPathData.02.svg
@@ -15,5 +15,5 @@
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     <path d="M10 50q20 10 20 20"/>
     <path d="M10 50q20 10 20 20t10 0"/>
-    <path d="M10 50a20 60 45 0 1 30 20"/>
+    <path d="M10 50a20 60 45 0130 20"/>
 </svg>
diff --git a/test/plugins/convertPathData.03.svg b/test/plugins/convertPathData.03.svg
index 8081173..c065263 100644
--- a/test/plugins/convertPathData.03.svg
+++ b/test/plugins/convertPathData.03.svg
@@ -32,8 +32,8 @@
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     <path d="M10 50q20 10 20 20t10 0 10 20"/>
     <path d="M10 50q20 10 20 20t10 0 10 20"/>
-    <path d="M10 50a20 60 45 0 1 30 20 30 50-30 1 1 10 0"/>
-    <path d="M10 50a20 60 45 0 1 30 20 30 50-30 1 1 10 0"/>
+    <path d="M10 50a20 60 45 0130 20 30 50-30 1110 0"/>
+    <path d="M10 50a20 60 45 0130 20 30 50-30 1110 0"/>
     <path d="M0 0v5 5" marker-mid="url(#)"/>
     <path d="M0 0h0" stroke="black" stroke-linecap="round"/>
 </svg>
diff --git a/test/plugins/convertPathData.04.svg b/test/plugins/convertPathData.04.svg
index 72d56cc..0dae5fd 100644
--- a/test/plugins/convertPathData.04.svg
+++ b/test/plugins/convertPathData.04.svg
@@ -15,5 +15,5 @@
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     <path d="M10 50q20 60 30 70-20-60-10-50"/>
     <path d="M10 50q20 60 30 70t40 70L10 20"/>
-    <path d="M10 50a20 60 45 0 1 40 70 20 60 45 0 1-10-50"/>
+    <path d="M10 50a20 60 45 0140 70 20 60 45 01-10-50"/>
 </svg>
diff --git a/test/plugins/convertPathData.11.svg b/test/plugins/convertPathData.11.svg
index 965c284..0466038 100644
--- a/test/plugins/convertPathData.11.svg
+++ b/test/plugins/convertPathData.11.svg
@@ -40,7 +40,7 @@
     <path transform="" d="M0 0v100l70-50zm70 50l70-50v100z"/>
     <path fill="red" d="M118.742 187.108l79.162 124.74-96.593-25.883 8.716-49.428c17.43-98.857 89.875-79.446 81.16-30.017s63.728 68.84 72.444 19.411q13.073-74.143 87.877 75.31t193.185 51.764z"/>
     <path fill="red" stroke="red" transform="rotate(15) scale(.5) skewX(5) translate(200,100)" d="M100 200l200 200H100V300c0-200 150-200 150-100s150 100 150 0q0-150 200 100t400 0z"/>
-    <path fill="red" stroke="red" transform="rotate(15) scale(.5) skewX(5) translate(200,100)" d="M100 200l200 200H100V300c0-200 150-200 150-100s150 100 150 0q0-150 200 100t400 0a150 150 0 1 0 150-150z"/>
+    <path fill="red" stroke="red" transform="rotate(15) scale(.5) skewX(5) translate(200,100)" d="M100 200l200 200H100V300c0-200 150-200 150-100s150 100 150 0q0-150 200 100t400 0a150 150 0 10150-150z"/>
     <path fill="red" stroke="red" d="M106.066 183.712l70.71 122.474-96.592-25.882 12.941-48.296c25.882-96.593 98.326-77.181 85.385-28.885s59.504 67.708 72.445 19.412q19.411-72.445 83.652 74.178t193.185 51.764z" stroke-width=".5"/>
     <path fill="red" stroke="red" d="M318.198 551.135L530.33 918.56l-289.778-77.646 38.823-144.889c77.646-289.778 294.98-231.543 256.156-86.655s178.51 203.124 217.334 58.235q58.234-217.334 250.955 222.534t579.555 155.292z" stroke-width="1.5"/>
     <path fill="red" stroke="red" d="M70.004 121.25l46.669 80.833L52.922 185l8.54-31.876c17.083-63.75 64.896-50.94 56.355-19.064s39.272 44.687 47.813 12.812q12.812-47.814 55.21 48.957t127.503 34.165z" stroke-width=".33"/>
@@ -58,14 +58,14 @@
     </g>
     <path fill="url(#gradient)" transform="rotate(15) scale(0.33) translate(200,100)" d="M100 200l200 200H100V300c0-200 150-200 150-100s150 100 150 0q0-150 200 100t400 0z"/>
     <path clip-path="url(#a)" transform="rotate(15) scale(0.33) translate(200,100)" d="M100 200l200 200H100V300c0-200 150-200 150-100s150 100 150 0q0-150 200 100t400 0z"/>
-    <path d="M10 0a10 10 0 1 0 20 0"/>
-    <path d="M3.864 1.035a8 12 15 1 0 15.455 4.141"/>
-    <path d="M3.536 3.536a10 10 0 1 0 14.142 14.142"/>
-    <path d="M5 0a16.18 6.18 31.717 1 0 20 0"/>
-    <path d="M-12.122 332.074a80 240 15 1 0 154.548 41.41 80 240 15 1 0-154.548-41.41"/>
-    <path d="M721.72 450.759a240 80 15 1 0 41.412-154.548 240 80 15 1 0-41.411 154.548"/>
+    <path d="M10 0a10 10 0 1020 0"/>
+    <path d="M3.864 1.035a8 12 15 1015.455 4.141"/>
+    <path d="M3.536 3.536a10 10 0 1014.142 14.142"/>
+    <path d="M5 0a16.18 6.18 31.717 1020 0"/>
+    <path d="M-12.122 332.074a80 240 15 10154.548 41.41 80 240 15 10-154.548-41.41"/>
+    <path d="M721.72 450.759a240 80 15 1041.412-154.548 240 80 15 10-41.411 154.548"/>
     <path d="M8.6 6.4L5.4 9.5l3.2 3.1-.7.8L4 9.5l3.9-3.9zM5 10V9h10v1z"/>
-    <path d="M561.214 392.766a48.107 95.08 10.132 1 1-94.083-20.365 48.107 95.079 10.132 1 1 94.082 20.365z"/>
-    <path d="M-1.26-1.4a6.53 1.8-15.2 1 1 12.55-3.44"/>
+    <path d="M561.214 392.766a48.107 95.08 10.132 11-94.083-20.365 48.107 95.079 10.132 1194.082 20.365z"/>
+    <path d="M-1.26-1.4a6.53 1.8-15.2 1112.55-3.44"/>
     <path d="M0 0l.21 3.99.21 3.99"/>
 </svg>
diff --git a/test/plugins/convertPathData.14.svg b/test/plugins/convertPathData.14.svg
index c1115fe..a82daaf 100644
--- a/test/plugins/convertPathData.14.svg
+++ b/test/plugins/convertPathData.14.svg
@@ -12,12 +12,12 @@
 @@@
 
 <svg xmlns="http://www.w3.org/2000/svg">
-    <path d="M0 0a5 5 0 0 1 5 5"/>
-    <path d="M0 0a5 5 0 0 1 5 5l5-5"/>
-    <path d="M15 10a5 5 0 1 1 5-5l-5 5"/>
-    <path d="M41.008.102a5.006 5.006 0 0 1 3.849 3.705"/>
-    <path d="M7.234 19.474a5 5 0 0 1-4.933-8.683"/>
-    <path d="M60 0a5 5 0 1 0 .001 10.001A5 5 0 0 0 60 0z"/>
-    <path d="M15 23.54a8.493 8.493 0 0 1-5.25-1.807"/>
-    <path d="M-9.5 82.311a4.81 4.81 0 1 1 .002-9.622A4.81 4.81 0 0 1-9.5 82.31z"/>
+    <path d="M0 0a5 5 0 015 5"/>
+    <path d="M0 0a5 5 0 015 5l5-5"/>
+    <path d="M15 10a5 5 0 115-5l-5 5"/>
+    <path d="M41.008.102a5.006 5.006 0 013.849 3.705"/>
+    <path d="M7.234 19.474a5 5 0 01-4.933-8.683"/>
+    <path d="M60 0a5 5 0 10.001 10.001A5 5 0 0060 0z"/>
+    <path d="M15 23.54a8.493 8.493 0 01-5.25-1.807"/>
+    <path d="M-9.5 82.311a4.81 4.81 0 11.002-9.622A4.81 4.81 0 01-9.5 82.31z"/>
 </svg>
diff --git a/test/plugins/convertPathData.15.svg b/test/plugins/convertPathData.15.svg
index dc9427f..eec62ba 100644
--- a/test/plugins/convertPathData.15.svg
+++ b/test/plugins/convertPathData.15.svg
@@ -6,7 +6,7 @@
 @@@
 
 <svg xmlns="http://www.w3.org/2000/svg">
-    <path d="M.49 8.8A6.44 6.44 0 0 1 6.48.02a6.44 6.44 0 0 1 5.99 8.78"/>
+    <path d="M.49 8.8A6.44 6.44 0 016.48.02a6.44 6.44 0 015.99 8.78"/>
     <path d="M13.4 6.62c0-2.5-1.98-4.57-4.4-4.57S4.6 4.1 4.6 6.62"/>
 </svg>
 
diff --git a/test/plugins/convertPathData.16.svg b/test/plugins/convertPathData.16.svg
index 4fcee12..b31955f 100644
--- a/test/plugins/convertPathData.16.svg
+++ b/test/plugins/convertPathData.16.svg
@@ -6,7 +6,7 @@
 @@@
 
 <svg xmlns="http://www.w3.org/2000/svg">
-    <path d="M0 9V6a6 6 0 1 1 12 3"/>
+    <path d="M0 9V6a6 6 0 1112 3"/>
     <path d="M13 7c0-3-2-5-4-5S5 4 5 7"/>
 </svg>
 
diff --git a/test/plugins/convertPathData.18.svg b/test/plugins/convertPathData.18.svg
index e4af82d..b70935c 100644
--- a/test/plugins/convertPathData.18.svg
+++ b/test/plugins/convertPathData.18.svg
@@ -5,5 +5,5 @@
 @@@
 
 <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 36 36">
-    <path d="M32 32a4 4 0 0 1-4 4H8a4 4 0 0 0-4-4V4a4 4 0 0 0 4-4h20a4 4 0 0 1 4 4v28z" fill="#888"/>
+    <path d="M32 32a4 4 0 01-4 4H8a4 4 0 00-4-4V4a4 4 0 004-4h20a4 4 0 014 4v28z" fill="#888"/>
 </svg>
diff --git a/test/plugins/convertPathData.20.svg b/test/plugins/convertPathData.20.svg
index 2e00cbb..960038e 100644
--- a/test/plugins/convertPathData.20.svg
+++ b/test/plugins/convertPathData.20.svg
@@ -5,5 +5,5 @@
 @@@
 
 <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 36 36">
-    <path d="M32 4a4 4 0 0 0-4-4H8a4 4 0 0 1-4 4v28a4 4 0 0 1 4 4h20a4 4 0 0 0 4-4V4z"/>
+    <path d="M32 4a4 4 0 00-4-4H8a4 4 0 01-4 4v28a4 4 0 014 4h20a4 4 0 004-4V4z"/>
 </svg>
diff --git a/test/plugins/mergePaths.03.svg b/test/plugins/mergePaths.03.svg
index ee0613a..a7af7b5 100644
--- a/test/plugins/mergePaths.03.svg
+++ b/test/plugins/mergePaths.03.svg
@@ -29,7 +29,7 @@
     <path d="M0 10H60L30 50z"/>
     <path d="M0 0V50L50 0M0 60L50 10V60"/>
     <g>
-        <path d="M100 0a50 50 0 0 1 0 100M25 25H75V75H25z"/>
+        <path d="M100 0a50 50 0 010 100M25 25H75V75H25z"/>
         <path d="M135 85H185V135H135z"/>
     </g>
     <g>
diff --git a/test/plugins/prefixIds.07.svg b/test/plugins/prefixIds.07.svg
new file mode 100644
index 0000000..add8a8d
--- /dev/null
+++ b/test/plugins/prefixIds.07.svg
@@ -0,0 +1,27 @@
+<svg width="120" height="120" xmlns="http://www.w3.org/2000/svg">
+    <style>
+        .test {
+            color: blue;
+        }
+        #test {
+            color: red;
+        }
+
+    </style>
+    <rect class="test" x="10" y="10" width="100" height="100"/>
+    <rect class="" id="test" x="10" y="10" width="100" height="100"/>
+</svg>
+
+@@@
+
+<svg width="120" height="120" xmlns="http://www.w3.org/2000/svg">
+    <style>
+        .prefixIds_07_svg__test{color:blue}#test{color:red}
+    </style>
+    <rect class="prefixIds_07_svg__test" x="10" y="10" width="100" height="100"/>
+    <rect class="" id="test" x="10" y="10" width="100" height="100"/>
+</svg>
+
+@@@
+
+{"prefixIds":false}
diff --git a/test/plugins/prefixIds.08.svg b/test/plugins/prefixIds.08.svg
new file mode 100644
index 0000000..1008b6c
--- /dev/null
+++ b/test/plugins/prefixIds.08.svg
@@ -0,0 +1,27 @@
+<svg width="120" height="120" xmlns="http://www.w3.org/2000/svg">
+    <style>
+        .test {
+            color: blue;
+        }
+        #test {
+            color: red;
+        }
+
+    </style>
+    <rect class="test" x="10" y="10" width="100" height="100"/>
+    <rect class="" id="test" x="10" y="10" width="100" height="100"/>
+</svg>
+
+@@@
+
+<svg width="120" height="120" xmlns="http://www.w3.org/2000/svg">
+    <style>
+        .test{color:blue}#prefixIds_08_svg__test{color:red}
+    </style>
+    <rect class="test" x="10" y="10" width="100" height="100"/>
+    <rect class="" id="prefixIds_08_svg__test" x="10" y="10" width="100" height="100"/>
+</svg>
+
+@@@
+
+{"prefixClassNames":false}
diff --git a/test/plugins/prefixIds.09.svg b/test/plugins/prefixIds.09.svg
new file mode 100644
index 0000000..5d6d088
--- /dev/null
+++ b/test/plugins/prefixIds.09.svg
@@ -0,0 +1,27 @@
+<svg width="120" height="120" xmlns="http://www.w3.org/2000/svg">
+    <style>
+        .test {
+            color: blue;
+        }
+        #test {
+            color: red;
+        }
+
+    </style>
+    <rect class="test" x="10" y="10" width="100" height="100"/>
+    <rect class="" id="test" x="10" y="10" width="100" height="100"/>
+</svg>
+
+@@@
+
+<svg width="120" height="120" xmlns="http://www.w3.org/2000/svg">
+    <style>
+        .test{color:blue}#test{color:red}
+    </style>
+    <rect class="test" x="10" y="10" width="100" height="100"/>
+    <rect class="" id="test" x="10" y="10" width="100" height="100"/>
+</svg>
+
+@@@
+
+{"prefixIds":false,"prefixClassNames":false}
diff --git a/test/plugins/removeDimensions.04.svg b/test/plugins/removeDimensions.04.svg
new file mode 100644
index 0000000..ea22de5
--- /dev/null
+++ b/test/plugins/removeDimensions.04.svg
@@ -0,0 +1,9 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="100" height="50">
+    test
+</svg>
+
+@@@
+
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 50">
+    test
+</svg>
diff --git a/test/plugins/removeDimensions.05.svg b/test/plugins/removeDimensions.05.svg
new file mode 100644
index 0000000..48fa5b1
--- /dev/null
+++ b/test/plugins/removeDimensions.05.svg
@@ -0,0 +1,9 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="100.5" height="0.5">
+    test
+</svg>
+
+@@@
+
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100.5 0.5">
+    test
+</svg>
diff --git a/test/plugins/sortDefsChildren.01.svg b/test/plugins/sortDefsChildren.01.svg
index abfd67e..56c57ae 100644
--- a/test/plugins/sortDefsChildren.01.svg
+++ b/test/plugins/sortDefsChildren.01.svg
@@ -19,13 +19,13 @@
     <defs>
         <circle id="e" fill="none" fill-rule="evenodd" cx="60" cy="60" r="50"/>
         <circle id="f" fill="none" fill-rule="evenodd" cx="60" cy="60" r="50"/>
-        <path id="b" d="M0 0zM10 10zM20 20l10 10M30 0c10 0 20 10 20 20M30 30z"/>
-        <path id="d" d="M 30,30 z"/>
         <text id="a">
             referenced text
         </text>
         <text id="c">
             referenced text
         </text>
+        <path id="b" d="M0 0zM10 10zM20 20l10 10M30 0c10 0 20 10 20 20M30 30z"/>
+        <path id="d" d="M 30,30 z"/>
     </defs>
 </svg>