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Don't use a temporary file in mkdep.sh

Ed is THE editor!.

--- a/mkdep.sh

+++ b/mkdep.sh

@@ -1,9 +1,9 @@

 #!/bin/sh

 set -e

-trap "rm -f $$.tmp" 0 2 3

-(sed '/^#deps/q' deps.mk

+(echo '/^#deps/+;$c'

+

 for i in `find . -name '*.c'`

 do

 	file=`basename $i | sed 's/\.c$/.o/'`

@@ -13,4 +13,7 @@

 	sed -n "/#include \"/ s,#include \"\(.*\)\",$dir$file: $dir\1,p" $i

 done |

-LC_ALL=C sort -s) > $$.tmp && mv $$.tmp deps.mk

+LC_ALL=C sort -s

+

+echo .

+echo w) | ed -s deps.mk