Ian Wienand <iwienand@xxxxxxxxxx> writes: > +test_expect_success 'tracing a shell alias with arguments shows trace of prepared command' ' > + git config alias.echo "!echo \$*" && > + env GIT_TRACE=1 git echo argument 2>output && > + test_grep "^trace: start_command:.*" output > +' This will succeed even if you have two or more instances of this log, which will not help you avoid the mistake we saw in an earlier iteration. How about making sure that the prepared command looks reasonable enough and we have only one, by doing something like this? test_expect_success 'tracing a shell alias with arg shows trace of prepared command' ' cat >expect <<-EOF && trace: prepare_cmd: SHELL -c ${SQ}echo \$* "\$@"${SQ} ${SQ}echo \$*${SQ} arg EOF git config alias.echo "!echo \$*" && env GIT_TRACE=1 git echo arg 2>output && # redact platform differences sed -n -e "s/^\(trace: prepare_cmd:\) .* -c /\1 SHELL -c /p" output >actual && test_cmp expect actual ' A sample run of CI job with the above change (and others I sent on the list) can be seen at: https://github.com/git/git/actions/runs/9233329671 You can fetch 'seen' and can find commit 05ebf54569, which is the tip of your topic including a few "fixup" commits I made on top. $ git log --decorate --oneline master..05ebf54569 05ebf54569 (iw/trace-argv-on-alias) fixup! run-command: show prepared command 11056975bb fixup! run-command: show prepared command 770dda8f2b run-command: show prepared command 242b9d4d63 Documentation: alias: add notes on shell expansion e4331ad0d4 Documentation: alias: rework notes into points It hasn't finished running yet, but all the windows tests have passed, so I'll happily go to bed now ;-) Thanks.