Repository: martin-helmich/typo3-typoscript-lint (php)
Issue: Empty lines should not be indented
I would not expect any warnings or errors with the following code:

```
plugin.tx_gkhrssimport_pi1 = USER
plugin.tx_gkhrssimport_pi1 {
	userFunc = GertKaaeHansen\GkhRssImport\Controller\RssImportController->main

	templateFile = {$plugin.tx_gkhrssimport_pi1.templateFile}
}
```

but I get a warning that my indent on line 4 is wrong (the empy line) and expected to be 1 tab.

My requirement is that empty lines should always have no indent no matter where they are.
Pull request description: Ignore empty lines when checking indentation
This fixes a regression caused by a change in a dependency (martin-helmich/typo3-typoscript-parser#61). That change made empty statements (read: empty lines) turn up in the token stream (which was on purpose, since it actually allows more insight into how the code was originally formatted before lexical analysis). Unfortunately, that messed up the IndentationSniff, which now also expected these empty lines to have indentation.

This change modifies the IndentationSniff to explicitly exclude empty lines from analysis.

Fixes #115 

Patch:
diff --git a/src/Linter/Sniff/IndentationSniff.php b/src/Linter/Sniff/IndentationSniff.php
index 60fe84d..b8aa5d1 100644
--- a/src/Linter/Sniff/IndentationSniff.php
+++ b/src/Linter/Sniff/IndentationSniff.php
@@ -1,4 +1,7 @@
-<?php declare(strict_types=1);
+<?php
+
+declare(strict_types=1);
+
 namespace Helmich\TypoScriptLint\Linter\Sniff;
 
 use Helmich\TypoScriptLint\Linter\LinterConfiguration;
@@ -72,7 +75,7 @@ class IndentationSniff implements TokenStreamSniffInterface
                 $expectedIndentationCharacterCount
             );
 
-            $tokensInLine = array_values(array_filter($tokensInLine, function(TokenInterface $token): bool {
+            $tokensInLine = array_values(array_filter($tokensInLine, function (TokenInterface $token): bool {
                 return $token->getType() !== TokenInterface::TYPE_RIGHTVALUE_MULTILINE;
             }));
 
@@ -105,6 +108,14 @@ class IndentationSniff implements TokenStreamSniffInterface
      */
     private function isEmptyLine(array $tokensInLine): bool
     {
+        $tokensInLine = array_values(array_filter($tokensInLine, function (TokenInterface $t): bool {
+            return $t->getType() !== TokenInterface::TYPE_EMPTY_LINE;
+        }));
+
+        if (count($tokensInLine) === 0) {
+            return true;
+        }
+
         if (count($tokensInLine) > 1) {
             return false;
         }


Test patch:
diff --git a/tests/functional/Helmich/TypoScriptLint/Tests/Linter/Fixtures/Indentation/input.typoscript b/tests/functional/Helmich/TypoScriptLint/Tests/Linter/Fixtures/Indentation/input.typoscript
index 12f3564..b09686a 100644
--- a/tests/functional/Helmich/TypoScriptLint/Tests/Linter/Fixtures/Indentation/input.typoscript
+++ b/tests/functional/Helmich/TypoScriptLint/Tests/Linter/Fixtures/Indentation/input.typoscript
@@ -1,4 +1,5 @@
 foo {
     bar = 2
+
   baz = 5
 }
diff --git a/tests/functional/Helmich/TypoScriptLint/Tests/Linter/Fixtures/Indentation/output.txt b/tests/functional/Helmich/TypoScriptLint/Tests/Linter/Fixtures/Indentation/output.txt
index 031e07a..4e40001 100644
--- a/tests/functional/Helmich/TypoScriptLint/Tests/Linter/Fixtures/Indentation/output.txt
+++ b/tests/functional/Helmich/TypoScriptLint/Tests/Linter/Fixtures/Indentation/output.txt
@@ -1,1 +1,1 @@
-3;2;Expected indent of 4 spaces.;warning;Helmich\TypoScriptLint\Linter\Sniff\IndentationSniff
\ No newline at end of file
+4;2;Expected indent of 4 spaces.;warning;Helmich\TypoScriptLint\Linter\Sniff\IndentationSniff
\ No newline at end of file