revgrep is a CLI tool used to filter static analysis tools to only lines changed based on a commit reference.
go install github.com/golangci/revgrep/cmd/revgrep@latest
In the scenario below, a change was made causing a warning ingo vet on line 5, butgo vet will show all warnings.Usingrevgrep, you can show only warnings for lines of code that have been changed (in this case, hiding line 6).
[user@host dir (master)]$ go vetmain.go:5: missing argumentfor Sprintf("%s"): format reads arg 1, have only 0 argsmain.go:6: missing argumentfor Sprintf("%s"): format reads arg 1, have only 0 args[user@host dir (master)]$ go vet|& revgrepmain.go:5: missing argumentfor Sprintf("%s"): format reads arg 1, have only 0 args|& is shown above as many static analysis programs write tostderr, notstdout,|& combines bothstderr andstdout. It could also be achieved withgo vet 2>&1 | revgrep.
revgrep CLI tool will return an exit status of 1 if any issues match, else it will return 0. Consider using${PIPESTATUS[0]} for the exit status of thego vet command in the above example.
Usage: revgrep [options] [from-rev] [to-rev]from-rev filters issues to lines changed since (and including) this revision to-rev filters issues to lines changed since (and including) this revision, requires <from-rev> If no revisions are given, and there are unstaged changes or untracked files, only those changes are shown If no revisions are given, and there are no unstaged changes or untracked files, only changes in HEAD~ are shown If from-rev is given and to-rev is not, only changes between from-rev and HEAD are shown. -d Show debug output -regexp string Regexp to match path, line number, optional column number, and message
Issues between branches:
[user@host dir (feature/branch)]$ go vet|& revgrep master
Issues since last push:
[user@host dir (master)]$ go vet|& revgrep origin/master
