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Git commit-msg hook to validate for jira issue or the word merge
#!/usr/bin/env bash
# set this to your active development branch
develop_branch="develop"
current_branch="$(git rev-parse --abbrev-ref HEAD)"
# only check commit messages on main development branch
[ "$current_branch" != "$develop_branch" ] && exit 0
# regex to validate in commit msg
commit_regex='(wap-[0-9]+|merge)'
error_msg="Aborting commit. Your commit message is missing either a JIRA Issue ('WAP-1111') or 'Merge'"
if ! grep -iqE "$commit_regex" "$1"; then
echo "$error_msg" >&2
exit 1
fi

Instructions

  • copy the file commit-msg to .git/hooks/commit-msg
  • make sure your delete the sample file .git/hooks/commit-msg.sample
  • Make commit msg executable. chmod +x .git/hooks/commit-msg
  • Edit commit-msg to better fit your development branch, commit regex and error message
  • Profit $$

Shell example

curl https://gist.githubusercontent.com/pgilad/5d7e4db725a906bd7aa7/raw/feba0ca462f87a382cfbc3eddfcc529ceb9b7350/commit-msg.sh > .git/hooks/commit-msg

rm .git/hooks/commit-msg.sample

chmod +x .git/hooks/commit-msg

vim .git/hooks/commit-msg

echo "Profit $$"
@aaditya89
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aaditya89 commented Jan 13, 2017

The commit msg hook can be enforced on local repository by adding it manually.
Is there a way we can push this hook to remote repository and everyone who clones it will be enforced to commit messages in certain format ?

@thekiwicoder0
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thekiwicoder0 commented Jan 25, 2017

You'd need to write a server-side commit hook for that

This might help: https://git-scm.com/book/uz/v2/Customizing-Git-An-Example-Git-Enforced-Policy

@michalkleiner
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michalkleiner commented May 26, 2017

Alternatively, if your projects use any sort of automation, e.g. using Composer or npm or other to install dependencies, you can use that to install the git hook.

@sebinsua
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sebinsua commented Jun 19, 2017

@opyate
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opyate commented Oct 10, 2017

@bcowgill
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bcowgill commented Jan 24, 2018

I believe that last line should be:

echo "Profit \$$$"

@swmagesh
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swmagesh commented Mar 17, 2018

How to validate the code error free before commit? Anyone please help!!!

@pgilad
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Author

pgilad commented Apr 11, 2018

@swmagesh, what do you mean by error free? Do you mean running lint or tests before the commit?

@dberstein
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dberstein commented Apr 14, 2018

@pgilad inspired by your and @opyate work, I've crafted this: https://gist.github.com/dberstein/dcc50e171163c3f6e0f23b2b5de5dd49

It auto inserts into the message Jira issues found in branch's name but not in the content otherwise behaves like yours. For example commit in branch "WAP-1234.ThisIsAPullRequestBranch" with message "support for WAP-567" will commit message "WAP-1234, support for WAP-567".

@legend80s
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legend80s commented Jun 30, 2019

configuration free git-commit-msg-linter

@UncleCJ
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UncleCJ commented May 6, 2020

Found this old gem - much appreciated! I expanded it and shared with the corporation:

#!/usr/bin/env bash

commit_regex = '^((build|chore|ci|docs|feat|fix|perf|refactor|revert|style|test|Publish)(\([a-zA-Z0-9 /_,.-]+?\))?: .{1,59}\w (\([A-Z]+-[0-9]+\)|\(#[0-9]+\)|\[skip ci\]|\[ci\])|Merge branch .+|(fixup|squash)! .+|WIP: .+)$'

error_msg = '
.git/hooks/commit-msg: Aborting commit, try again with a valid message. The regexp checks for:

* a conventional commit message subject (to be parsed into changelogs, see https://www.conventionalcommits.org/en/v1.0.0 ):
   - a change type, either of "build", "chore", "ci", "docs", "feat", "fix", "perf", "refactor", "revert", "style", "test" or "Publish"
   - optionally, in parenthesis, subsystem(s) affected by the change (comma delimited list)
   - a colon, space (": ") and a brief subject (60 characters maximum) not ending with a period
   - a space and in parenthesis, an issue id " (FOO-123)" or " (#123)"... or the tags "[skip ci]" or "[ci]" (do we use these?)
* ... or, a Git autosquash line, i.e. "fixup! My previous commit" or "squash! Another previous commit" (see https://thoughtbot.com/blog/autosquashing-git-commits )
* ... or, a merge commit "Merge branch x..."
* ... or, a work-in-progress tag "WIP: "
* optionally (not validated), two line breaks and a commit message body
This script is written by CJ Sveningsson (carl-johan.sveningsson@scania.com), inspired by https://gist.github.com/pgilad/5d7e4db725a906bd7aa7 (Gilad Peleg)'

if ! grep -iqE "${commit_regex}" "$1"; then
    echo "${error_msg}" >&2
    exit 1
fi

@amahpour
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amahpour commented Sep 15, 2021

I wrote a very simple syntax checker for N amount of characters and numbers as the Jira key (e.g. ABCDE-12345):

#!/bin/bash
[[ $(cat $1) =~ [A-Z]+-[0-9]+.* ]] || {
    echo >&2 "ERROR: Commit message requires JIRA key. Example: \"ABC-123: Test Commit\""
    exit 1
}

Hope it helps for anyone looking for a super basic checker.

@Reimirno
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Reimirno commented Jul 3, 2022

Hi,

I wrote a regex for commit message convention 1.0.0 which is based off the Angular Convention.

commit_regex='^(feat|fix|build|chore|docs|style|refactor|perf|test)(\(.+\))?!?: (.+[^.\r\n])([\r\n]+(.+[\r\n]+)+)?$'

This is a simple, lightweight commit message convention enforcing a format like this:

<type>[optional scope]: <description>

[optional body]

[optional footer(s)]

This should work out of box but you can modify it the way you want. Hope it's helpful!

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