Autoloaded bash shell scripts treated as zsh

Autoloaded bash shell scripts treated as zsh

[zzapper]

Hi,
I used a tip from one of the faqs (Peter Stephenson I think) to autoload all my 
zsh shell scripts.

autoload ${fpath[1]}/*(:t)  #autoload all functions in $fpath

As I also use the same directory for my legacy bash scripts, I was unpleasantly 
surprised to find that these scripts had also been autoloaded and were now being 
treated as zsh scripts.

Easy to fix, either I make the scripts zsh compatible or move them elsewhere.

Q1)
But is that expected behaviour (latest zsh on cygwin)?

Q2)
I was surprised to what extent my bash scripts worked as zsh (mostly only 
required the adding of a pre-declaration of any variables), is a reasonable 
proportion of bash available from within zsh?


zzapper

BTW this is posted via http://post.gmane.org/post.php?group=gmane.comp.shells.
zsh.user

Re: Autoloaded bash shell scripts treated as zsh

[Bart Schaefer]

On Mar 7, 11:41pm, zzapper wrote:
}
} autoload ${fpath[1]}/*(:t) #autoload all functions in $fpath

Well, as you discovered, this actually means:  "Assume the name of
every file in $fpath is also the name of a zsh function, and create
an autoload for every function so named."

} As I also use the same directory for my legacy bash scripts, I was
} unpleasantly surprised to find that these scripts had also been
} autoloaded and were now being treated as zsh scripts.

How (and why) did you expect zsh to tell the two sets of functions
apart if you put them all in the same directories? There's no magic
here; zsh doesn't examine the contents of the files for #! lines or
anything like that -- for one thing, many functions don't have a #!
line because they're not designed to be executed as standalone scripts.  

} Easy to fix, either I make the scripts zsh compatible or move them
} elsewhere.

A third possibility is to zcompile only the zsh functions, then use
"autoload -w" to load them.

} Q2) I was surprised to what extent my bash scripts worked as zsh
} (mostly only required the adding of a pre-declaration of any
} variables), is a reasonable proportion of bash available from within
} zsh?

Both bash and zsh are to a significant degree compatible with the
POSIX shell standard, so yes, they have a lot of overlap, and if you
don't use any of the special features of either shell, then the same
scripts and functions should work in both.

Re: Autoloaded bash shell scripts treated as zsh

[zzapper]

On Tue, 08 Mar 2005 06:05:21 +0000,  wrote:

>On Mar 7, 11:41pm, zzapper wrote:
>}
>} autoload ${fpath[1]}/*(:t) #autoload all functions in $fpath
>
>Well, as you discovered, this actually means:  "Assume the name of
>every file in $fpath is also the name of a zsh function, and create
>an autoload for every function so named."
>
>} As I also use the same directory for my legacy bash scripts, I was
>} unpleasantly surprised to find that these scripts had also been
>} autoloaded and were now being treated as zsh scripts.
>
>How (and why) did you expect zsh to tell the two sets of functions
>apart if you put them all in the same directories? There's no magic.
Bart, just forgot they were there!

BTW what's the best way to reload/unload a shell function you are working on?

I've been calling it directly

./myshell

Re: Autoloaded bash shell scripts treated as zsh

[Peter Stephenson]

zzapper wrote:
> BTW what's the best way to reload/unload a shell function you are working on?

I've had this function for ages.

reload() {
  if (( $# == 0 )); then
    print "Reload what?" >&2
    return 1
  fi

  while (( $# )); do
    unfunction $1 && autoload $1
    shift
  done
}

-- 
Peter Stephenson <pws@csr.com>                  Software Engineer
CSR PLC, Churchill House, Cambridge Business Park, Cowley Road
Cambridge, CB4 0WZ, UK                          Tel: +44 (0)1223 692070


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Re: Autoloaded bash shell scripts treated as zsh

[zzapper]

On Tue, 08 Mar 2005 10:26:18 +0000,  wrote:

>reload() {
>  if (( $# == 0 )); then
>    print "Reload what?" >&2
>    return 1
>  fi
>
>  while (( $# )); do
>    unfunction $1 && autoload $1
>    shift
>  done
>}

Thanx Peter, i'll borrow that thanx.

It's easy to forget that you can't just edit a zsh autoloaded function, and then run it!!