Re: sed? insanity

[Goswin Brederlow <goswin.brederlow@student.uni-tuebingen.de>]

Clint Adams <schizo@debian.org> writes:

> This is driving me batty.  Can anyone tell me what's broken here?
> 
> % ./shtest weird
> t: s,$,weird,
> s: TESTweird
> % make -f maketest test
> t: make[1]: Entering directory `/tmp'
> s,$,weird,
> make[1]: Leaving directory `/tmp'
> sed: -e expression #1, char 1: Unknown command: ``m''
> s: 
> 
> -----8<-----
> #!/bin/sh
> # shtest
> 
> weird="s,\$\$,$1,"
> 
> t=`make -f - <<EOF
> all:
> 	@echo $weird
> EOF`
> 
> echo "t: $t"
> 
> s=`echo TEST | sed -e "$t"`
> 
> echo "s: $s"
> -----8<-----
> #!/usr/bin/make
> # maketest
> 
> test:
> 	@./shtest 'weird'
> -----8<-----

Behaves just as it should.

As your output shows

t="make[1]: Entering directory `/tmp'
s,$,weird,
make[1]: Leaving directory `/tmp'"

and thus sed -e "$t" evaluates to:

sed -e "make[1]: Entering directory `/tmp'
s,$,weird,
make[1]: Leaving directory `/tmp'"

and m is not a proper command for sed.

Your problem is the extra output make generates when calling make
again.

May the Source be with you.
			Goswin