Clarify usage of addcslashes

11 years ago · 20ef3e3c5b
parent 3b48a1fea6
commit 20ef3e3c5b
1 changed files with 1 additions and 0 deletions
--- a/src/Composer/Json/JsonManipulator.php
+++ b/src/Composer/Json/JsonManipulator.php
@ -72,6 +72,7 @@ class JsonManipulator
        if (isset($data[$type][$package])) {
            // update existing link
            $packageRegex = str_replace('/', '\\\\?/', preg_quote($package));
+            // addcslashes is used to double up backslashes since preg_replace resolves them as back references otherwise, see #1588
            $links = preg_replace('{"'.$packageRegex.'"(\s*:\s*)'.self::$JSON_STRING.'}i', addcslashes(JsonFile::encode($package).'${1}"'.$constraint.'"', '\\'), $links);
        } else {
            if (preg_match('#^\s*\{\s*\S+.*?(\s*\}\s*)$#', $links, $match)) {