Martin Ågren <martin.agren@xxxxxxxxx> writes: >> + echo 11 | git commit-tree --gpg-sign HEAD^{tree} >oid && >> + test_line_count = 1 oid && >> + git tag eleventh-signed $(cat oid) && >> +... > Let's see if there any opinions from others about this more verbose > construction, vs placing the oid in a variable and quoting it. We > obviously went several years without realizing that using $(...) as an > object id risked falling back to HEAD and that a completely broken `git > commit-tree -S` would pass the test. So being over-careful and extra > obvious might very well be the right thing. Sorry, but I am not sure what issue you are worried about. If the "commit-tree" command failed in this construct: oid=$(echo 11 | git commit-tree ...) && git tag eleventh-signed "$oid" wouldn't the &&-chain break after the assignment of an empty string to oid, skip "git tag" and make the whole test fail, with or without '$oid" fed to "git tag" quoted? It is wrong not to quote "$oid" for the "git tag" command (the test should not rely on the fact that the object names given by "git commit-tree" have no $IFS in them), but that is a separate issue.