From: Marc Chantreux <mc@unistra.fr>
To: Zsh Users <zsh-users@zsh.org>
Subject: A way to find a bug (or explain a missuse of) realpath expansion?
Date: Tue, 30 Apr 2024 15:58:57 +0200 [thread overview]
Message-ID: <ZjD5IStAhHXUNCLT@prometheus> (raw)
hello,
The /usr shade of path will disapear from debian distribution so
right now we have:
realpath /usr/bin /usr/bin/ /bin /bin/| sort -u
# /usr/bin
Let's forget extra / for the moment: I can get the same result with:
foo=( {/usr,}/bin )
foo=( ${foo%/} )
foo=( $foo(:A) )
print -l ${(u)foo}
# /usr/bin
but I don't know how to oneline it:
foo=( {/usr,}/bin )
print -l ${(u):-${foo%/}(:A)}
# /usr/bin
# /usr/bin
neither I can deal with backslashed twins.
foo=( {/usr,}/bin{,/} ) ; print -l ">>>> setting foo" $foo
foo=( ${foo%/} ) ; print -l ">>>> remove tailing /" $foo
foo=( $foo(:A) ) ; print -l ">>>> realpath" $foo
foo=( ${(u)foo} ) ; print -l ">>>> uniq" $foo
>>>> setting foo
/usr/bin
/usr/bin/
/bin
/bin/
>>>> remove tailing /
/usr/bin
/usr/bin
/bin
/bin
>>>> realpath
/usr/bin
/usr/bin
/bin
/usr/bin
>>>> uniq
/usr/bin
/bin
I also realize I post those kind of questions for 20 years now just
because the zsh community is friendly enough to reply again and again:
I still don't know how to give a closer look to the way zsh work to fix
it by myself. To me the next step seems to be:
* compile my own version of zsh with symbols (from apt source and
dpkg-buildpackage?)
* run a gdb session and start to explore the code
Is it? is there still something easier to try at this point? I want to
learn fishery.
regards,
--
Marc Chantreux
Pôle CESAR (Calcul et services avancés à la recherche)
Université de Strasbourg
14 rue René Descartes,
BP 80010, 67084 STRASBOURG CEDEX
03.68.85.60.79
next reply other threads:[~2024-04-30 13:59 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-30 13:58 Marc Chantreux [this message]
2024-05-01 3:43 ` Bart Schaefer
2024-05-02 8:06 ` Marc Chantreux
2024-05-02 16:03 ` Bart Schaefer
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