From: "Lawrence Velázquez" <larryv@zsh.org>
To: "Ray Andrews" <rayandrews@eastlink.ca>
Cc: zsh-users@zsh.org
Subject: Re: Best practices for managing aliases in ohmyzsh?
Date: Wed, 01 Sep 2021 16:53:27 -0400 [thread overview]
Message-ID: <3e294425-c74b-4218-ad54-ac7044cf2171@www.fastmail.com> (raw)
In-Reply-To: <CAH+w=7bVOZSzUXxBon1Q_i+MY0ZrvoBpR2bdXqGLiKhAKZL4QQ@mail.gmail.com>
On Wed, Sep 1, 2021, at 4:03 PM, Bart Schaefer wrote:
> On Wed, Sep 1, 2021 at 12:56 PM Ray Andrews <rayandrews@eastlink.ca> wrote:
> > What if you source a file with another shell's shebang?
Even before getting to language mismatches, it generally doesn't
make sense to source a file that has a shebang because such a file
probably assumes that it'll be run in a separate process. For
instance, it might create a lot of temporary variables or utility
functions and not clean any of it up.
Similarly, I don't think you should include a shebang in a file
that is not meant to be executed by a separate interpreter because
that is the whole point of shebangs. Including one sends a strong
signal that that file is supposed to be executed.
> Sufficiently portably written shell code might work, and there are
> some tricks you can do in some languages that have superficial
> similarities so that incorrect interpreters can recognize themselves
> and do a backflip, but for the most part it is indeed "barf."
Observe:
% cat ./barf.py
#!/usr/bin/python
import sys
print(sys.argv)
% chmod +x ./barf.py
% ./barf.py 1 2 3
['./barf.py', '1', '2', '3']
% . ./barf.py
./barf.py:3: command not found: import
./barf.py:4: unknown file attribute: y
--
vq
next prev parent reply other threads:[~2021-09-01 20:55 UTC|newest]
Thread overview: 53+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-30 18:13 Steve Dondley
2021-08-30 22:27 ` Ray Andrews
2021-08-30 23:22 ` Steve Dondley
2021-08-30 23:34 ` Ray Andrews
2021-08-31 1:44 ` Steve Dondley
2021-08-31 0:14 ` Lawrence Velázquez
2021-08-31 1:29 ` Steve Dondley
2021-08-31 8:26 ` Roman Perepelitsa
2021-08-31 15:51 ` Steve Dondley
2021-08-31 17:57 ` Roman Perepelitsa
2021-08-31 18:54 ` Bart Schaefer
2021-08-31 21:22 ` Steve Dondley
2021-08-31 21:36 ` Roman Perepelitsa
2021-08-31 21:43 ` Steve Dondley
2021-08-31 21:44 ` Roman Perepelitsa
2021-09-01 0:12 ` Ray Andrews
2021-09-01 0:28 ` Bart Schaefer
2021-09-01 2:33 ` Ray Andrews
2021-09-01 3:01 ` Bart Schaefer
2021-09-01 14:20 ` Daniel Shahaf
2021-09-01 15:58 ` Ray Andrews
2021-09-01 18:22 ` Lawrence Velázquez
2021-09-01 19:11 ` Ray Andrews
2021-09-01 19:16 ` Bart Schaefer
2021-09-01 19:56 ` Ray Andrews
2021-09-01 20:03 ` Bart Schaefer
2021-09-01 20:52 ` Steve Dondley
2021-09-01 21:06 ` Ray Andrews
2021-09-01 22:06 ` Steve Dondley
2021-09-01 20:53 ` Lawrence Velázquez [this message]
2021-09-01 21:11 ` zeurkous
2021-09-01 21:19 ` Bart Schaefer
2021-09-01 21:29 ` Lawrence Velázquez
2021-09-01 21:23 ` Ray Andrews
2021-09-01 21:05 ` Ray Andrews
2021-09-01 3:19 ` Steve Dondley
2021-09-01 3:30 ` Bart Schaefer
2021-09-01 3:27 ` Lawrence Velázquez
2021-09-01 16:20 ` Ray Andrews
2021-09-01 18:34 ` Lawrence Velázquez
2021-09-01 19:19 ` Ray Andrews
2021-08-31 8:06 ` Anssi Saari
2021-08-31 15:45 ` Steve Dondley
2021-08-31 16:24 ` zzapper
2021-08-31 16:47 ` Steve Dondley
2021-08-31 17:20 ` Steve Dondley
2021-08-31 17:26 ` Bart Schaefer
2021-08-31 17:40 ` Steve Dondley
2021-08-31 17:47 ` Steve Dondley
2021-08-31 18:31 ` Ray Andrews
2021-08-31 18:59 ` Lawrence Velázquez
2021-09-01 6:40 ` Michael Klemm
2021-09-01 22:13 ` Steve Dondley
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