contrib/stg-whatchanged

   1 #!/bin/bash
   2 set -e
   3
   4 # stg-whatchanged - show a metadiff for the patch being modified,
   5 # especially when resolving a merge.
   6
   7 # Copyright (c) 2006-2007 Yann Dirson <ydirson@altern.org>
   8 # Subject to the GNU GPL, version 2.
   9
  10 # FIXME:
  11 # - should only exclude hunk headers differing only in line offsets
  12 # - diff coloring should show changes in context lines differently than
  13 #   changes in contents
  14 # - filter on ^index lines is a bit wide
  15 # - we should be able to ask diff to force a new hunk on "^@@ " to better
  16 #   handle them
  17 # - we should always show the hunk header for any changes within a hunk
  18
  19 # default to unified diff
  20 if [ "$#" = 0 ]; then
  21     set -- -u
  22 fi
  23
  24 # Merges via "push" leave top=bottom so we must look at old patch
  25 # in this case (unlike, eg., "pick --fold")
  26 patchdir="$(git-rev-parse --git-dir)/patches/$(stg branch)/patches/$(stg top)"
  27 case $(stg log | head -n1) in
  28     *push\(c\)*) former="//top.old" ;;
  29     *) former="//top" ;;
  30 esac
  31
  32 stg-mdiff -o "$*" \
  33     $former //bottom..