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Re: Using "m4_bpatsubst/patsubst" to remove a string from a variable
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From: |
Eric Blake |
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Subject: |
Re: Using "m4_bpatsubst/patsubst" to remove a string from a variable |
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Date: |
Mon, 6 Jun 2016 12:21:23 -0600 |
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User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.3.0 |
On 06/06/2016 07:31 AM, Zack Weinberg wrote:
> or you can do it all in shell:
>
> VAR="text1 text2"
> VAR2="`AS_ECHO("$VAR") | sed 's/text1//g'`" dnl yes, the nested double
> quotes are correct
Correct in a POSIX shell, but liable to misbehave on some older shells.
Better is:
VAR2=`AS_ECHO("$VAR") | sed 's/text1//g'`
Since it is in assignment context, you don't need the outer "" to
prevent word splitting, the `` is enough for the shell to know where the
assignment ends.
--
Eric Blake eblake redhat com +1-919-301-3266
Libvirt virtualization library http://libvirt.org
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