pre-commit.no-tabs

#!/bin/sh

# Reject any commit that would add a line with tabs.
#
# You can enable this as a repo policy with
#
#   git config hooks.allowtabs true

allowtabs=$(git config hooks.allowtabs)

if [ "$allowtabs" != "true" ] &&
   git diff --cached | egrep '^\+.*	'>/dev/null
then
   cat<<END;
Error: This commit would contain a tab, which is against this repo's policy.

If you know what you are doing you can force this commit with:

  git commit --no-verify

Or change the repo policy like so:

  git config hooks.allowtabs true

Tabs:
END
  git grep -n --cached '	'
  exit 1
fi