maint/ldiff

   1 #!/bin/sh
   2
   3 # This script makes pretty looking patches provided that the old files
   4 # are kept around with the .v0 suffix.
   5
   6 : ${backup_suffix="v0"}
   7 backup_files=`find . -path "*.$backup_suffix" -type f | sort | uniq`
   8 for oldfile in $backup_files; do
   9   newfile=`echo $oldfile | sed 's,^\./,,;s,\.'$backup_suffix'$,,'`
  10   oldlabel="$oldprefix$newfile"
  11   newlabel="$newprefix$newfile"
  12   find "$oldfile" ! -size 0 | grep . >/dev/null || \
  13     { oldfile="/dev/null"; oldlabel="/dev/null"; }
  14   find "$newfile" ! -size 0 | grep . >/dev/null || \
  15     { newfile="/dev/null"; newlabel="/dev/null"; }
  16   case $newfile in
  17     *.c) dflags="-u -p" ;;
  18     *ChangeLog*) dflags="-u1" ;;
  19     *) dflags="-u" ;;
  20   esac
  21   diff $dflags -L "$oldlabel" -L "$newlabel" "$oldfile" "$newfile"
  22 done