bug#37576: 27.0.50; [Windows] "Permission denied" error from call-process if executable not found

[Richard Copley]

On Tue, 1 Oct 2019 at 21:43, Juanma Barranquero <lekktu@gmail.com> wrote:

On Tue, Oct 1, 2019 at 9:56 PM Richard Copley <rcopley@gmail.com> wrote:

> In "emacs -Q", if the file "xyzzy" does not exist on the path, (call-process "xyzzy") now leaves this in the *Messages* buffer:
>
>   forward-sexp: Searching for program: Permission denied, xyzzy
>
> In older versions the entry in the message buffer is a true statement:
>
>   eval: Searching for program: No such file or directory, xyzzy

In the current trunk, I get "No such file on directory".

ELISP> (call-process "xyzzy")

*** Eval error ***  Searching for program: No such file or directory, xyzzy

> Repository revision: cbc507779b8f56ce0abf596416e8e3847de88e10

> Repository branch: buster

After Paul changes adding more strict file checking, there were some fixes to ease up. Perhaps you got a revision in between. I cannot say, because the repository revision of your report is likely some local change by you (it's not in the public repository).

I get the same results in "emacs -Q" rebuilt from scratch from current pristine master, 2698d3dba2 (2019-10-01 23:15:03 2019 +0300). After building and running using this command...:

  git reset --hard 2698d3db && git clean -xfd && ./autogen.sh && ./configure && make && src/emacs.exe -Q

...the recipe below pops up the Lisp debugger.

M-: (call-process SPC "xyzzy") RET

c ;; debugger-continue

On continuing in the debugger, it prints "forward-sexp: Searching for program: Permission denied, xyzzy" in the *Messages* buffer.