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Re: Lower case construction does not working properly


From: Pierre Gaston
Subject: Re: Lower case construction does not working properly
Date: Tue, 24 Nov 2015 16:23:14 +0200



On Tue, Nov 24, 2015 at 2:23 PM, Michael Kazakov <address@hidden> wrote:
Hellol.
I have founded a bug in variable manipulation behavior of bash version 4.2.53.
Constructions ${parameter,pattern} and ${parameter,,pattern} does not working properly:
address@hidden:~> VAR=COLORADO
address@hidden:~> echo ${VAR,c}
COLORADO
 
c is a pattern that only matches a lower case c, so it will not match an upper case C

$ VAR=COLORADO; echo ${VAR,C}
cOLORADO


As an aside shopt -s nocasematch and shopt -s nocaseglob don't seem to apply, with both on:

$ VAR=COLORADO; echo ${VAR,[c]}
COLORADO




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