From: Sebastian Gniazdowski <sgniazdowski@gmail.com>
To: Roman Perepelitsa <roman.perepelitsa@gmail.com>
Cc: Zsh Users <zsh-users@zsh.org>
Subject: Re: Why a '-quoted string isn't respected by // subst, while \-quoted is?
Date: Wed, 25 Jan 2023 13:09:55 +0000 [thread overview]
Message-ID: <CAKc7PVBCwhcg7sSE9348bQLrKfZkt6iCzED4Xvs+mO5f1SYjGw@mail.gmail.com> (raw)
In-Reply-To: <CAKc7PVC8DMPJJFY64sErMhdgS3mwRFe0fz5hPKJ-vuBh8bX=rg@mail.gmail.com>
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It seems that it's / within the '-quoted string that causes the problem:
print ${QE//'0=${${(M)${0::=${(%):-%x}}:#\/*}:-$PWD\/$0}'/°match°}
outputs °match°, while:
print ${QE//'0=${${(M)${0::=${(%):-%x}}:#/*}:-$PWD/$0}'/°match°}
doesn't. Isn't it a bug of ignoring '-quoting of /?
On Wed, 25 Jan 2023 at 12:59, Sebastian Gniazdowski <sgniazdowski@gmail.com>
wrote:
> Ok, I'll take a closer look, however I'm now struggling with similar
> problem:
>
> QE='0=${${(M)${0::=${(%):-%x}}:#/*}:-$PWD/$0}'
> print ${QE//'0=${${(M)${0::=${(%):-%x}}:#/*}:-$PWD/$0}'/°match°}
>
> the strings in QE and in …//'…'/… are identical. Why no match? A simpler
> example works as expected:
>
> QE=qeqe
> print ${(S)QE//'qeqe'/°match°}
>
> Output:
>
> °match°
>
> On Wed, 25 Jan 2023 at 12:36, Roman Perepelitsa <
> roman.perepelitsa@gmail.com> wrote:
>
>> On Wed, Jan 25, 2023 at 12:05 PM Sebastian Gniazdowski
>> <sgniazdowski@gmail.com> wrote:
>> >
>> > Hi,
>> > I'm storing a pattern in a var:
>> >
>> > E="0='\${\${\\(M\\)\${0::=\${\\(%\\):-%x}}:\\#/\\*}:-\$PWD/\$0}'"
>> >
>> > to then match it against:
>> >
>> > Q='0=${${(M)${0::=${(%):-%x}}:#/*}:-$PWD/$0}'
>> >
>> > with // substitution:
>> >
>> > printf %s\\n $E $Q ${Q//$~E/q}
>> >
>> > The result is no match. However, if I instead quote the string with \:
>> >
>> > E='0=${${\(M\)${0::=${\(%\):-%x}}:\#/*}:-$PWD/$0}'
>>
>> You can print them to see the difference:
>>
>> % E="0='\${\${\\(M\\)\${0::=\${\\(%\\):-%x}}:\\#/\\*}:-\$PWD/\$0}'"
>> % print -r -- $E
>> 0='${${\(M\)${0::=${\(%\):-%x}}:\#/\*}:-$PWD/$0}'
>>
>> % E='0=${${\(M\)${0::=${\(%\):-%x}}:\#/*}:-$PWD/$0}'
>> % print -r -- $E
>> 0=${${\(M\)${0::=${\(%\):-%x}}:\#/*}:-$PWD/$0}
>>
>> As you can see, the first `E` has three extra characters: two quotes
>> and a backslash.
>>
>> Roman.
>>
>
>
> --
> Best regards,
> Sebastian Gniazdowski
>
>
--
Best regards,
Sebastian Gniazdowski
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next prev parent reply other threads:[~2023-01-25 13:11 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-01-25 11:04 Sebastian Gniazdowski
2023-01-25 12:36 ` Roman Perepelitsa
2023-01-25 12:59 ` Sebastian Gniazdowski
2023-01-25 13:09 ` Sebastian Gniazdowski [this message]
2023-01-25 13:10 ` Roman Perepelitsa
2023-01-27 18:43 ` Daniel Shahaf
2023-01-27 19:38 ` Bart Schaefer
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