#!/bin/sh

# reindent inputabsize outputabsize inputcontinuestring outputcontinuestring
# eg, to change libpng coding style from 3-space indentation to 4-space
#
#  reindent 3 4 " " "  " < example.c.orig > example.c
#
# Assumes that continued lines begin with indentation plus one space, and
# that continued comments begin with indentation plus " *".

unexpand --first-only --t $inputtabsize $1 | \
   sed -e "/^	$3[^\*]/{s/	$3/	$4/}" | \
   expand -t $2