cosmopolitan/build/catcode

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#!/bin/sh
#-*-mode:sh;indent-tabs-mode:nil;tab-width:2;coding:utf-8-*-┐
#───vi: set net ft=sh ts=2 sts=2 fenc=utf-8 :vi─────────────┘
#
# OVERVIEW
#
# Source File Concatenation Tool
#
# DESCRIPTION
#
# This program is the same as cat, but inserts preprocessor directives
# that allow compiler errors to point back to the original lines.
if [ $# -eq 0 ]; then
cat
else
for x; do
printf '# 1 "%s"\n' "$x"
cat "$x"
done
fi