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Skip claude.ai/code and use word boundaries for mappings

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Two user-reported conflicts when using the extension alongside Claude
Code on the web and with short mappings:

1. Claude Code (claude.ai/code) sends real file paths, usernames, and
   shell commands to its tool runtime. Substituting any of these
   corrupts execution, forcing users to disable the extension for that
   app. early-hook.js and injector.js now short-circuit on that path so
   fetch/XHR are never wrapped and no page-world script is injected.

2. Explicit mappings used raw literal regexes, so "not" -> "bad" would
   rewrite "nothing" into "badhing". substitute/reveal/scan/diff (and
   their page-world mirrors) now add \b on word-character edges only,
   leaving non-word edges like "@foo" unchanged so they keep matching.

https://claude.ai/code/session_01Y2YprLMx348eWD5C9Z4zpV
This commit is contained in:
Claude
2026-04-16 16:12:04 +00:00
parent 03dd61d8bd
commit 16c8275f4e
5 changed files with 68 additions and 17 deletions
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test-suite.js
+12
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@@ -345,6 +345,18 @@ test('Disabled mapping is skipped', () => {
if (result.text.includes('Alex Demo')) throw 'Disabled mapping should not substitute';
});
test('Mapping matches whole words only', () => {
const result = SubstitutionEngine.substitute('nothing is not a thing, not even this', [
{ real: 'not', substitute: 'bad', enabled: true }
]);
if (result.text.includes('bahing') || result.text.includes('badhing')) {
throw `Should not match inside "nothing", got: ${result.text}`;
}
if (!/\bbad\b/.test(result.text)) {
throw `Should still match standalone "not", got: ${result.text}`;
}
});
// ============================================================
// SMART PATTERNS
// ============================================================