Re: setopt and alias questions

[Sweth Chandramouli <sweth@astaroth.nit.gwu.edu>]

On Mon, Feb 08, 1999 at 11:44:03AM -0800, Bart Schaefer wrote:
> On Feb 8,  2:15pm, Sweth Chandramouli wrote:
> } Subject: Re: setopt and alias questions
> }
> } On Mon, Feb 08, 1999 at 10:45:50AM -0800, Bart Schaefer wrote:
> } > 
> } > 	autoload $^fpath/*(.:t)
> } 	i don't like error messages, however, so i use the loop to test
> } for the existance of autoloadable files before doing the actual autoload:
> } 
> } for DIRNAME in ${fpath} ; do
> }    if [[ -x ${DIRNAME}/*(.x:t) ]] ; then
> }       autoload ${DIRNAME}/*(.x:t)
> }    fi;
> } done;
> 
> That loop will never autoload anything -- unless there happens to be a
> file in the current directory with the same name as one in ${DIRNAME}.
> Do you see why?
	yes--because i need to start cut&pasting my functions rather
than typing them in.  that should be -n, not -x.

> Once that's fixed, the [[ -x ... ]] is completely redundant with *(.x) --
> it always succeeds, unless *(.x) doesn't match any files.  (Is that the
> error you're worried about?)
	that's the error--the glob complains if there are no functions to
autoload in fpath, and i find myself copying my .zshrc to enough new
machines where i haven't had a chance to set up any functions in .zfunc
and can't nfs-mount my "real" home directory that the error message can
get annoying.  with the -n, it just tests to see if there are, in fact,
any executable files in that directory; if not, it won't try to autoload
(and thus glob).

> Finally, there's no requirement that files have the execute mode set in
> order to be autoloadable, so using (x) may miss some.
	that's a requirement i picked up from someone on this list, or
maybe it was in the examples--it lets me "turn off" autoloading of individual
functions by removing their execute bit.  i have some functions that i don't
want to use anymore, for example, but which i want to keep around so i don't
have to reinvent the wheel if i later on want to create a similar function;
this lets me keep them all in one dir.

	-- sweth.

-- 
Sweth Chandramouli
IS Coordinator, The George Washington University
<sweth@gwu.edu> / (202) 994 - 8521 (V) / (202) 994 - 0458 (F)
<a href="http://astaroth.nit.gwu.edu/~sweth/disc.html">*</a>