a utility on top of git for project-wide search-and-replace that includes filenames too
Project description
About
git-search-replace is a small utility on top of plain git
for performing project-wide search-and-replace only on git-controlled files. It applies its searches to filenames as well as their content. The underlying syntax for the search regex is Python's.
It is designed to be a bit more instructive to the developer, compared to hackish bash
scripts around sed
.
An accompanying utility is gsr-branch, which does the same thing as git-search-replace but on the history of a branch (using git filter-branch
). It's especially useful for fixing a whole bunch of commits at once when the fix is a simple search & replace (retaining a clean history).
Key features are:
- By default, only act as grep to show what is going to change.
- Dry run mode (
--diff
) shows a unidiff of the changes that the search-and-replace would do, so that the developer can review for correctness. No working directory files are modified. - Fix mode (
--fix
) performs the actual changes and associated 'git mv'.
Wait, but my awesome editor can already do that!
That's right, but when you are working within a group of people and everyone has their own editor, it becomes quite useful to be able to communicate renames in a way that everyone can easily reproduce, and during conflict resolution it is even more useful (see: git-mediate). This comes handy especially in commit message, for instance:
commit 3ed68e243e76783fa2b92fa33f7e4681f0246332
Author: Dan Aloni <alonid@gmail.com>
Date: Sun Jul 26 18:42:52 2015 +0300
module: renamed with: gsr foo///bar -f
Syntax
Usage: gsr [options] (FROM-SEPARATOR-TO...)
gsr [options] -p FROM1 TO1 FROM2 TO2 ...
Options:
-h, --help show this help message and exit
-s STRING, --separator=STRING
The separator string the separates FROM and TO
regexes. /// by default, if -p is not specified
-p, --pair-arguments Use argument pairs for FROM and TO regexes. Useful with
shell expansion. E.g: colo{,u}r
-f, --fix Perform changes in-place
-d, --diff Use 'diff' util to show differences
-e PATTERN, --exclude=PATTERN
Exclude files matching the provided globbing pattern
(can be specified more than once)
-i PATTERN, --include=PATTERN
Include files matching the provided globbing pattern
(can be specified more than once)
--no-renames Don't perform renames
The expressions are tuples in the form of FROM-SEPARATOR-TO, with SEPARATOR defaults to '///'.
The -e
and -i
options abide by the following rules:
- Each of these can be passed multiple times.
- The order matters, as they are checked in that order for each file. Last matcher takes effect when matched.
- If neither is passed, all files are included by default.
- If
-i
if given first, then by default all files are excluded.
Examples
Shell escaping needs to be taken into consideration. The examples below should work with the major UNIX shells.
gsr old_name///new_name --diff
This shows a diff that represents the replacement of 'old_name' with 'new_name'.
gsr \\bold_name\\b///new_name --fix
This uses Python regex expression \b for matching at word boundaries for whole identifiers. This invocation will perform changes in-place because of '--fix'.
gsr 'things with space///with other stuff' --diff
Note that shells properly de-escape the commas from the expression above.
Example of using gsr-branch:
gsr-branch.py HEAD~10 '(\.|\-\>)ol_header///\1header'
Runs the search replace regex over the last 10 commits, modifying them in-place. The regex will replace the string .ol_header
(or ->ol_header
) with .header
(or ->header
).
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