"autoload -U" expanding alias

"autoload -U" expanding alias

[Thorsten Kampe]

[zsh 4.2.0 on Gentoo]

I have a script that zcompiles some rcfiles. It's asking whether to
overwrite files:
re-compiling /home/thorsten/.zsh/.zlogout.zwc: mv: overwrite
`/home/thorsten/.zsh/.zlogout.zwc.old', overriding mode 0400? 

What's happening and how can I prevent this question?

The "-U" keeps my "mv -i" alias from being expanded....

Thorsten

[1]
,---
| #! /bin/zsh -f
| emulate -LR zsh
| 
| localzdotdir=~/.zsh
| nwzdotdir=~/mnt/nwhome/ifolder/conf/zsh
| 
| autoload -U zrecompile
| zrecompile -p -R /etc/profile.d/zshell.zsh -- \
|               -R /etc/zprofile             -- \
|               -R /etc/zsh/zprofile         -- \
|               -M $localzdotdir/.zcompdump  -- \
|               -R $localzdotdir/.zlogin     -- \
|               -R $localzdotdir/.zlogout    -- \
|               -R $localzdotdir/.zshrc      -- \
|               -R ~/.zshenv                 -- \
|               -M $nwzdotdir/.zcompdump     -- \
|               -R $nwzdotdir/.zlogin        -- \
|               -R $nwzdotdir/.zlogout       -- \
|               -R $nwzdotdir/.zshrc
`---

Re: "autoload -U" expanding alias

[Bart Schaefer]

On Mar 23, 10:43pm, Thorsten Kampe wrote:
} 
} I have a script that zcompiles some rcfiles. It's asking whether to
} overwrite files:
} re-compiling /home/thorsten/.zsh/.zlogout.zwc: mv: overwrite
} `/home/thorsten/.zsh/.zlogout.zwc.old', overriding mode 0400? 

This message is happening because of the 0400 file mode, not because of
any option being passed to the "mv" command.  Files that are not writable
in directories that are writable trigger this behavior unless "mv -f" is
used.
 
} What's happening and how can I prevent this question?

chmod 0600 the .zwc.old files.  How did they end up mode 0400 ?  Does
your umask setting typically cause you to create files you can't write?

Re: "autoload -U" expanding alias

[Thorsten Kampe]

* Bart Schaefer (2004-03-24 19:36 +0100)
> On Mar 23, 10:43pm, Thorsten Kampe wrote:
> } I have a script that zcompiles some rcfiles. It's asking whether to
> } overwrite files:
> } re-compiling /home/thorsten/.zsh/.zlogout.zwc: mv: overwrite
> } `/home/thorsten/.zsh/.zlogout.zwc.old', overriding mode 0400? 
> 
> This message is happening because of the 0400 file mode, not because of
> any option being passed to the "mv" command.  Files that are not writable
> in directories that are writable trigger this behavior unless "mv -f" is
> used.

I see. But these "0400" ".zwc.old" files are created from zrecompile
itself. This happens only on my Linux box. My Cygwin host has no
problems mv a 0400 file.
  
> } What's happening and how can I prevent this question?
> 
> chmod 0600 the .zwc.old files.  How did they end up mode 0400 ?  Does
> your umask setting typically cause you to create files you can't write?

My umask is 077 so the newly created file from zrecompile should be
mode 600 - not 400.

Thorsten

Re: "autoload -U" expanding alias

[Peter Stephenson]

Thorsten Kampe wrote:
> I see. But these "0400" ".zwc.old" files are created from zrecompile
> itself. This happens only on my Linux box. My Cygwin host has no
> problems mv a 0400 file.

This seems to be deliberate. parse.c line 2631.


    if ((dfd = open(dump, O_WRONLY|O_CREAT, 0444)) < 0) {
	zwarnnam(nam, "can't write zwc file: %s", dump, 0);
	return 1;
    }

-- 
Peter Stephenson <pws@csr.com>                  Software Engineer
CSR Ltd., Science Park, Milton Road,
Cambridge, CB4 0WH, UK                          Tel: +44 (0)1223 692070


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Re: "autoload -U" expanding alias

[Bart Schaefer]

On Mar 24,  9:41pm, Thorsten Kampe wrote:
}
} * Bart Schaefer (2004-03-24 19:36 +0100)
} > chmod 0600 the .zwc.old files.  How did they end up mode 0400 ?
} 
} My umask is 077 so the newly created file from zrecompile should be
} mode 600 - not 400.

On Mar 24,  8:53pm, Peter Stephenson wrote:
} 
} This seems to be deliberate. parse.c line 2631.

Hrm.  (I've been saying that a lot lately.)

In that case, I'd say it's zrecompile that's broken.  Should we change
"mv" to "mv -f" throughout?

Re: "autoload -U" expanding alias

[Peter Stephenson]

Bart Schaefer wrote:
> In that case, I'd say it's zrecompile that's broken.  Should we change
> "mv" to "mv -f" throughout?

Sounds reasonable, under the circumstances.

-- 
Peter Stephenson <pws@csr.com>                  Software Engineer
CSR Ltd., Science Park, Milton Road,
Cambridge, CB4 0WH, UK                          Tel: +44 (0)1223 692070


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This email and any files transmitted with it are confidential and
intended solely for the use of the individual or entity to whom they
are addressed. If you have received this email in error please notify
the system manager.

This footnote also confirms that this email message has been swept by
MIMEsweeper for the presence of computer viruses.

www.mimesweeper.com
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