mpv/help_diff.sh

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#! /bin/sh
# This script walks through the master (stdin) help/message file, and
# prints (stdout) only those messages which are missing from the help
# file given as parameter ($1).
#
# Example: help_diff.sh help_mp-hu.h < help_mp-en.h > missing.h
curr="x"
while read -r line ; do
if ( echo $line | cut -d ' ' -f 1 | grep '^#define' > /dev/null ); then
curr=`echo $line | cut -d ' ' -f 2`
if ( grep " $curr " $1 > /dev/null ); then
curr="x"
fi
else
if test x"$line" = x; then
curr="x"
fi
fi
if test $curr != "x" ; then
echo "$line"
fi
done