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Wouter Van Schandevijl
Exotic Git Snippets
2019-04-05 00:00:00 GMT-2
Some not-so-often used git commands.
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Photo by Brine Blum
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Ignore certain files in git output
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Git Recipes
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Some git commands and scripts that come in handy from time to time.

Splitting Repositories

You start with a small project. It grows over time as you add more and more features. And then, at some point, you realize one of these features should actually have been a separate repository because it provides functionality that can be useful in multiple contexts.

So far I moved the files and did a git init. At this point, I was always sad because well, I lost the history of the feature. Not only less commits for my Github statistics but I also lost git blame so it could no longer tell me why a particular algorithm was written the way it was.

Turns out git allows you to have your cake and eat it too!

git filter-branch --prune-empty --subdirectory-filter src master

# Locking out package-lock.json

These days each npm install makes a git diff on frontend projects a real drag. Page upon page of uninteresting changes.

git diff -- ':!*package-lock.json' ':!*yarn.lock'

Or as a ~/.gitconfig alias:

df = "!f() { git diff --ignore-all-space -- $1 ':(exclude)*yarn.lock' ':!**package-lock.json'; }; f"

# Deleting merged branches

Locally:
~/.gitconfig aliases. (develop|master): Do not delete these branches even if merged with current branch.

merged-branches = !git branch --merged | egrep -v \"(\\*| ) (develop|master)\" | xargs -n 1
dm = !git merged-branches git branch -d

Remote:

Somehow a CI server always seems to be amassing feature branches. A simple cleanup script to the rescue!

Replace name-comitter (author filter) and origin (remote filter) and add as a ~/.gitconfig alias:

my-merged-remote-branches = !git for-each-ref --format='%(authorname):%(refname)' | egrep \"name-comitter\" | egrep \"refs/remotes\" | sed -e \"s/^.*:refs\\/remotes\\/origin\\//:/\"

Followed by PowerShell:

git my-merged-remote-branches | % { git push --no-verify origin $_ }

# Filename case renaming

Pesky Windows.
Also note the core.ignorecase configuration value.

git mv -f OldFileNameCase newfilenamecase


# Other blog posts
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