Your message dated Tue, 22 Jan 2013 09:12:56 +0000 (UTC)
with message-id <[email protected]>
and subject line Re: Bug#698678: "*" in ${name/pattern/string} matches no
character string
has caused the Debian Bug report #698678,
regarding "*" in ${name/pattern/string} matches no character string
to be marked as done.
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If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.
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698678: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=698678
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--- Begin Message ---
Package: mksh
Version: 40.9.20120630-4
Hi,
I do not match character string at all when I appoint only "*" in a pattern
of ${name/pattern/string}:
$ v=abc; print ${v/*/0}
abc
$ print ${v/?*/0}
0
--- End Message ---
--- Begin Message ---
Jonny dixit:
>I do not match character string at all when I appoint only "*" in a pattern
>of ${name/pattern/string}:
>$ v=abc; print ${v/*/0}
>abc
>$ print ${v/?*/0}
>0
This is not a bug but a user error. An extglob matching everything
or nothing cannot be applied, that’s why it’s short-circuited. You
should just write
$ print 0
instead of
$ print ${v/*/0}
in the first place. It makes no sense.
The technical reason, beyond that, is that the globbing code needs
some sort of anchor. Given the nonsensicality, I don’t think adding
code to check for this special case makes sense, it’s slow enough
as is already.
bye,
//mirabilos
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--- End Message ---
