For editing files added to the index:
vim `git diff --name-only --cached`
To edit all changed files:
vim `git diff --name-only HEAD`
To edit changed files matching glob:
vim `git diff --name-only -- '*.html'`
If the commands needs to support filenames with whitespace, it gets a bit hacky (see http://superuser.com/questions/336016/invoking-vi-through-find-xargs-breaks-my-terminal-why for the reason):
git diff --name-only -z | xargs -0 bash -c '</dev/tty vim "$@"' x
The last part can be put in a script named e.g. vimargs, and used with any command outputting NUL separated filenames:
git grep -lz foobar | vimargs
The option --porcelain makes the output of git easier to parse. This one-liner may not work if there is a space in the modified file name.
Opens all files in the index (modified plus not added yet) in tabs in vim.
Works even with spaces in filenames. As an alias in .gitconfig: [alias] editchanged = "!git status --porcelain | sed -ne 's/^ M //p' | tr '\\n' '\\0' | tr -d '\"' | xargs -0 vim"
Any thoughts on this command? Does it work on your machine? Can you do the same thing with only 14 characters?
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git status | awk '/modified/{ print $3 }'