Alexis Huxley wrote: > Description: > [[ ... =~ ... ]] is broken when RHS is quoted
AFAICT that seems to have changed from 3.2alpha. According to the changelog, from version 3.2alpha, "Quoting the string argument to the [[ command's =~ operator now forces string matching, as with the other pattern-matching operators". $ bash -c '[[ "^apple" =~ ^apple ]]; declare -p BASH_REMATCH' declare -ar BASH_REMATCH='()' $ bash -c '[[ "^apple" =~ "^apple" ]]; declare -p BASH_REMATCH' declare -ar BASH_REMATCH='([0]="^apple")' Spaces (and possibly other special chars) in the RHS should be escaped: $ bash -c '[[ "apple banana" =~ ^apple\ banana ]]; declare -p BASH_REMATCH' declare -ar BASH_REMATCH='([0]="apple banana")' $ bash -c '[[ "apple banana" =~ ^(apple)\ (banana) ]]; declare -p BASH_REMATCH' declare -ar BASH_REMATCH='([0]="apple banana" [1]="apple" [2]="banana")' $ bash --version GNU bash, version 3.2.33(1)-release (i686-pc-linux-gnu) Copyright (C) 2007 Free Software Foundation, Inc. -- D.
