In https://lore.kernel.org/git/xmqqv99i4ck2.fsf@gitster.g/ Junio and
Christian talked about the problem of using strbuf_replace() to replace
$ARG:

 1. if the user's script has more than one $ARG, only the first one will be
    replaced, which is incorrected.
 2. $ARG is textually replaced without shell syntax, which may result a
    broken command when $ARG include some unmatching single quote, very
    unsafe.

Now pass trailer value as $1 to the trailer command with another
trailer.<token>.cmd config, to solve these above problems.

We are now writing documents that are more readable and correct than before.

Change from last version: Change docs example "Count-count" to "Helped-by".

ZheNing Hu (2):
  [GSOC] docs: correct descript of trailer.<token>.command
  [GSOC] trailer: add new .cmd config option

 Documentation/git-interpret-trailers.txt | 94 ++++++++++++++++++++----
 t/t7513-interpret-trailers.sh            | 84 +++++++++++++++++++++
 trailer.c                                | 35 ++++++---
 3 files changed, 187 insertions(+), 26 deletions(-)

base-commit: 142430338477d9d1bb25be66267225fb58498d92

Submitted-As: https://lore.kernel.org/git/pull.913.v12.git.1620056466.gitgitgadget@gmail.com
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