* bug#52509: 27.2; `call-process-region' won't accept nil as START argument
@ 2021-12-15 10:59 LdBeth
2021-12-15 14:09 ` Stephen Berman
2021-12-15 14:24 ` Eli Zaretskii
0 siblings, 2 replies; 5+ messages in thread
From: LdBeth @ 2021-12-15 10:59 UTC (permalink / raw)
To: 52509
The docstring of `call-process-region' writes:
START and END are normally buffer positions specifying the part of the
buffer to send to the process.
If START is nil, that means to use the entire buffer contents; END is
ignored.
If START is a string, then send that string to the process
instead of any buffer contents; END is ignored.
The remaining arguments are optional.
Delete the text if fourth arg DELETE is non-nil.
To reproduce this bug, define these functions:
```
(defun this-works ()
(call-process-region (point-min) (point-max) "/bin/cat"
t t))
(defun this-wont ()
(call-process-region nil 0 "/bin/cat"
t t))
```
and use `M-:` to execute these two function. The second one would give
the error trace:
```
Debugger entered--Lisp error: (wrong-type-argument integer-or-marker-p nil)
call-process-region(nil 0 "/bin/cat" t t)
this-wont()
eval((this-wont) t)
eval-expression((this-wont) nil nil 127)
funcall-interactively(eval-expression (this-wont) nil nil 127)
call-interactively(eval-expression nil nil)
command-execute(eval-expression)
```
While if my understanding to the docstring is right, these two should
give identical effect.
The Emacs version I'm using is 27.2, however I suspect this can also
be reproduced in master branch.
--
LDB
^ permalink raw reply [flat|nested] 5+ messages in thread* bug#52509: 27.2; `call-process-region' won't accept nil as START argument
2021-12-15 10:59 bug#52509: 27.2; `call-process-region' won't accept nil as START argument LdBeth
@ 2021-12-15 14:09 ` Stephen Berman
2021-12-15 15:26 ` LdBeth
2021-12-15 14:24 ` Eli Zaretskii
1 sibling, 1 reply; 5+ messages in thread
From: Stephen Berman @ 2021-12-15 14:09 UTC (permalink / raw)
To: LdBeth; +Cc: 52509
On Wed, 15 Dec 2021 18:59:59 +0800 LdBeth <andpuke@foxmail.com> wrote:
> The docstring of `call-process-region' writes:
>
> START and END are normally buffer positions specifying the part of the
> buffer to send to the process.
> If START is nil, that means to use the entire buffer contents; END is
> ignored.
> If START is a string, then send that string to the process
> instead of any buffer contents; END is ignored.
> The remaining arguments are optional.
> Delete the text if fourth arg DELETE is non-nil.
>
> To reproduce this bug, define these functions:
>
> ```
> (defun this-works ()
> (call-process-region (point-min) (point-max) "/bin/cat"
> t t))
>
> (defun this-wont ()
> (call-process-region nil 0 "/bin/cat"
> t t))
> ```
>
> and use `M-:` to execute these two function. The second one would give
> the error trace:
>
> ```
> Debugger entered--Lisp error: (wrong-type-argument integer-or-marker-p nil)
> call-process-region(nil 0 "/bin/cat" t t)
> this-wont()
> eval((this-wont) t)
> eval-expression((this-wont) nil nil 127)
> funcall-interactively(eval-expression (this-wont) nil nil 127)
> call-interactively(eval-expression nil nil)
> command-execute(eval-expression)
> ```
>
> While if my understanding to the docstring is right, these two should
> give identical effect.
>
> The Emacs version I'm using is 27.2, however I suspect this can also
> be reproduced in master branch.
Nope:
commit 42306747d8dece897805e89c36c3741bfb8d5e7c
Author: Philipp Stephani <phst@google.com>
Commit: Philipp Stephani <phst@google.com>
CommitDate: Sun Apr 12 19:04:11 2020 +0200
Fix error in 'call-process-region' when START is nil (Bug#40576)
Steve Berman
^ permalink raw reply [flat|nested] 5+ messages in thread* bug#52509: 27.2; `call-process-region' won't accept nil as START argument
2021-12-15 14:09 ` Stephen Berman
@ 2021-12-15 15:26 ` LdBeth
0 siblings, 0 replies; 5+ messages in thread
From: LdBeth @ 2021-12-15 15:26 UTC (permalink / raw)
To: Stephen Berman; +Cc: 52509
On Wed, 15 Dec 2021 22:09:08 +0800,
Stephen Berman wrote:
>
> Nope:
>
> commit 42306747d8dece897805e89c36c3741bfb8d5e7c
> Author: Philipp Stephani <phst@google.com>
> Commit: Philipp Stephani <phst@google.com>
> CommitDate: Sun Apr 12 19:04:11 2020 +0200
>
> Fix error in 'call-process-region' when START is nil (Bug#40576)
>
> Steve Berman
Thank you for confirmation. I'll check out 28.0 seen ;-).
--
LDB
^ permalink raw reply [flat|nested] 5+ messages in thread
* bug#52509: 27.2; `call-process-region' won't accept nil as START argument
2021-12-15 10:59 bug#52509: 27.2; `call-process-region' won't accept nil as START argument LdBeth
2021-12-15 14:09 ` Stephen Berman
@ 2021-12-15 14:24 ` Eli Zaretskii
2021-12-19 12:46 ` Lars Ingebrigtsen
1 sibling, 1 reply; 5+ messages in thread
From: Eli Zaretskii @ 2021-12-15 14:24 UTC (permalink / raw)
To: LdBeth; +Cc: 52509
> Date: Wed, 15 Dec 2021 18:59:59 +0800
> From: LdBeth <andpuke@foxmail.com>
>
> Debugger entered--Lisp error: (wrong-type-argument integer-or-marker-p nil)
> call-process-region(nil 0 "/bin/cat" t t)
> this-wont()
> eval((this-wont) t)
> eval-expression((this-wont) nil nil 127)
> funcall-interactively(eval-expression (this-wont) nil nil 127)
> call-interactively(eval-expression nil nil)
> command-execute(eval-expression)
> ```
>
> While if my understanding to the docstring is right, these two should
> give identical effect.
>
> The Emacs version I'm using is 27.2, however I suspect this can also
> be reproduced in master branch.
I can reproduce this in Emacs 27, but not in Emacs 28. So I guess
this has been fixed meanwhile.
^ permalink raw reply [flat|nested] 5+ messages in thread
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2021-12-15 10:59 bug#52509: 27.2; `call-process-region' won't accept nil as START argument LdBeth
2021-12-15 14:09 ` Stephen Berman
2021-12-15 15:26 ` LdBeth
2021-12-15 14:24 ` Eli Zaretskii
2021-12-19 12:46 ` Lars Ingebrigtsen
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