"ZheNing Hu via GitGitGadget" <gitgitgadget@xxxxxxxxx> writes: > +For consistency, the $1 is also passed, this time with the empty string, > +in the command when the command is first called to add a trailer with > +the specified <token>. I guess the same question as 1/2 applies to this part. I am not sure what "consistency" the behaviour of calling the configured command with no argument is trying to achieve. To me, .cmd doing this may be for consistency with .command but I am not sure why the consistency is even desiable. > +$ cat ~/bin/gcount > +#!/bin/sh > +test -n "$1" && git shortlog -s --author="$1" HEAD || true > +$ git config trailer.cnt.key "Commit-count: " > +$ git config trailer.cnt.ifExists "replace" > +$ git config trailer.cnt.cmd "~/bin/gcount" > +$ git interpret-trailers --trailer="cnt:Junio" <<EOF > +> subject > +> > +> message > +> > +> EOF > +subject > + > +message > + > +Commit-count: 22484 Junio C Hamano > +------------ This and the other (omitted) example demonstrates how the initial "empty" invocation is useless by using "replace". Which also means that you cannot add more than one trailer of the same <key> with the mechanism (since the older ones are replaced with the latest). The code change and the test change are consistent with the design, though. Thanks.