Remove modifications to translations files that don't add or remove strings.

remove-irrelevant-translations-modifications.sh

#!/bin/bash
#
# Remove modifications to translations files that don't add or remove strings.
#
# The removed modifications are those that affect the translation date and the
# numbers of the lines where existing strings appear. That information is not
# relevant during development and will only pollute the commit history.
#
# TODO: Try to achieve the same using only git.
# HINT: git diff -G
#
# You can create a Git alias with it:
#
# [alias]
#     remove-irrelevant-translations-modifications = "!f() { for i in $( git diff --name-only -- {*,*/*}/languages/*.{po,pot,mo} 2>/dev/null ); do matches=$( git diff -U0 -- $i 2>/dev/null | ack -ch '^\\+(?:(?:(?!\\+\\+))|^-(?:º(?!--)))msgid' ); if [ "$matches" -eq "0" ]; then git checkout $i; echo "The modifications to $i were removed"; fi; done; }; f"

f() {
    for i in $( git diff --name-only -- {*,*/*}/languages/*.{po,pot,mo} 2>/dev/null ); do
        matches=$( git diff -U0 -- $i 2>/dev/null | ack -ch '^\+(?:(?:(?!\+\+))|^-(?:(?!--)))msgid' )
        if [ "$matches" -eq "0" ]; then
            git checkout $i;
            echo "The modifications to $i were removed."
        fi;
    done;
}; f