Re: case insensitivity for some branch in the case statement

[Eric Blake]

On 11/1/19 10:46 PM, Peng Yu wrote:
> This is cumbersome if the string is long. Is there anything like a switch
> that just changes the case-sensitivity in a specific branch? Thanks.

Please don't top-post on technical lists.

This is REALLY gross, but:

case abC in
 abc) echo no;;
 *) shopt -s nocasematch ;;&
 abc) echo yes;;
esac

which echoes yes, because the first pattern (abc) does NOT match 
case-sensitively, the second pattern (*) _does_ match, and the ;;& 
terminator forces bash to recheck the input against the third pattern 
(abc) at which point it DOES match case-insensitively.

But PLEASE don't abuse bash like that in your scripts.

--
Eric Blake, Principal Software Engineer
Red Hat, Inc.           +1-919-301-3226
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