readable-not-found

readable-not-found

[Andreas Röhler]

Have the following load-test.el in some ~/testdir/ :

(if (file-readable-p "../test.el")
   (load "../test.el" nil t))

(file-readable-p "../test.el") reports t, but evaluating the 
load-function sends:

Debugger entered--Lisp error: (file-missing "Cannot open load file" 
"Datei oder Verzeichnis nicht gefunden" "../test.el")
   load("../test.el" nil t)
   (if (file-readable-p "../test.el") (load "../test.el" nil t))
   eval((if (file-readable-p "../test.el") (load "../test.el" nil t)) nil)
   elisp--eval-last-sexp(nil)
   eval-last-sexp(nil)
   funcall-interactively(eval-last-sexp nil)
   call-interactively(eval-last-sexp nil nil)
   command-execute(eval-last-sexp)


Checked with emacs -Q v26, v28, v29

Any suggestions?

Thanks,

Andreas

Re: readable-not-found

[tomas]

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On Wed, Mar 09, 2022 at 12:23:45PM +0100, Andreas Röhler wrote:
> Have the following load-test.el in some ~/testdir/ :
> 
> (if (file-readable-p "../test.el")
>   (load "../test.el" nil t))
> 
> (file-readable-p "../test.el") reports t, but evaluating the load-function
> sends:

This is probably because `load' doesn't look in the current
directory, but in the directories listed in `load-path'.

Usually that makes sense (usually, you don't want Emacs to
find different libraries just because you change your current
directory)

> Any suggestions?

What are you trying to achieve?

Cheers
-- 
t

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Re: readable-not-found

[Emanuel Berg via Users list for the GNU Emacs text editor]

Andreas Röhler wrote:

> Have the following load-test.el in some ~/testdir/ :
>
> (if (file-readable-p "../test.el")
>   (load "../test.el" nil t))

(defun load-if-exists (file)
  (if (file-exists-p file)
      (load-file file)
    (message "The file %s does not exist." file) ))

-- 
underground experts united
https://dataswamp.org/~incal

Re: readable-not-found

[Andreas Röhler]

Am 09.03.22 um 13:20 schrieb Emanuel Berg via Users list for the GNU 
Emacs text editor:
> Andreas Röhler wrote:
>
>> Have the following load-test.el in some ~/testdir/ :
>>
>> (if (file-readable-p "../test.el")
>>    (load "../test.el" nil t))
> (defun load-if-exists (file)
>    (if (file-exists-p file)
>        (load-file file)
>      (message "The file %s does not exist." file) ))
>

Didn't use load-file, as assumed designed for interactive use.

When looking into its definition, it's expand-file-name which does it:

(load (expand-file-name "../test.el") nil t)


Thanks all!

Re: readable-not-found

[Emanuel Berg via Users list for the GNU Emacs text editor]

Andreas Röhler wrote:

>>> (if (file-readable-p "../test.el")
>>>    (load "../test.el" nil t))
>>
>> (defun load-if-exists (file)
>>    (if (file-exists-p file)
>>        (load-file file)
>>      (message "The file %s does not exist." file) ))
>
> Didn't use load-file, as assumed designed for
> interactive use.

No, don't assume that ... on the contrary assume everything
works both ways, or at least the interactive -> Lisp way ...

Sometimes the docstring and/or byte compiler will tell you
otherwise, should be rare as that is a sign of whatever
badness so it needs to be stated, i.e. an explicit
exception to general fluidularity ...

> When looking into its definition, it's expand-file-name
> which does it:
>
> (load (expand-file-name "../test.el") nil t)

Indeed, gets the absolute path.

> Thanks all!

np :)

-- 
underground experts united
https://dataswamp.org/~incal