From 8803801d5d0443c89e4e325e800ba0c2113885fe Mon Sep 17 00:00:00 2001
From: Thomas Lange <code@nerdmind.de>
Date: Fri, 2 Feb 2024 20:25:07 +0100
Subject: Fix incorrect backslash escaping of `\\`
The regular expression part `\\` must be written as `\\\\`, not `\\\` in
a PHP string variable. Although both variants (`\\\\` and `\\\`) will be
passed as `\` to the regex engine in this specific case, it's correct to
use 4 backslashes, as the PHP manual tells you:
https://www.php.net/manual/en/regexp.reference.escape.php
---
core/namespace/Parsers/FunctionParser.php | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
(limited to 'core')
diff --git a/core/namespace/Parsers/FunctionParser.php b/core/namespace/Parsers/FunctionParser.php
index 5b2656e..02570a0 100644
--- a/core/namespace/Parsers/FunctionParser.php
+++ b/core/namespace/Parsers/FunctionParser.php
@@ -26,8 +26,8 @@ class FunctionParser implements ParserInterface {
private const ARGUMENT_PATTERN_PARTIAL =
'(?<arg> # Either a quoted string or a plain number
(?<qmark>["\']) # Either a single or double quote
- (?>[^"\'\\\]++ # String between the quotes
- | [\\\]. # A `\` followed by anything but literal newline
+ (?>[^"\'\\\\]++ # String between the quotes
+ | [\\\\]. # A `\` followed by anything but literal newline
| (?!\k<qmark>)["\'] # A quote, but not our opening quote
)*+
\k<qmark> # Closing quote (same as opening quote)
--
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