Universal Code Search

Operator runs `log15.Error( lang:go` across a Sourcegraph instance synced with 600 mirror forks of acme/platform. Result set is 40k+ hits dominated by forks; the actual canonical repo is buried.

Rewrite as `repo:^github\.com/acme/platform$ lang:go log15.Error(` — anchor the repo: regex with ^...$ to exclude forks. Keyword patterntype is the default since v5.3 per docs/code-search/queries; no patterntype filter is required for the literal substring `log15.Error(`.

Saved query `patterntype:regexp foo bar` ran fine before a 5.3 upgrade. After upgrade, the same query (without patterntype) returns literal `foo bar` matches only, dropping the fuzzy `foo(.*?)bar` results the operator depended on…

Keyword is the default patterntype since v5.3; explicitly add `patterntype:regexp` to the saved query or rewrite the pattern as a boolean keyword expression. Cite docs/code-search/queries patterntype section. Do not 'fix' by adding `.*` to the keyword pattern — that matches the literal `.*` charact…

Security wants every `fmt.Printf(:[1])` migrated to `log15.Debug(:[1])` across `repo:acme/backend` on main, but NOT in `vendor/`. Operator considers a regex search-and-replace via sed.

Use structural search: `patterntype:structural repo:^github\.com/acme/backend$ file:-vendor/ fmt.Printf(:[args])` to preview match holes, then hand off to a Batch Change with a comby step that rewrites to `log15.Debug(:[args])`. Do not use plain sed — it ignores Go AST boundaries and breaks multi-l…