GNU bug report logs - #28687
25.2; Error using term-handle-ansi-terminal-messages

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Live System User <nyc4bos <at> aol.com>
To: bug-gnu-emacs <at> gnu.org
Subject: 25.2; Error using term-handle-ansi-terminal-messages
Date: Tue, 03 Oct 2017 11:19:38 -0400

Hi,

        When trying to use `term-handle-ansi-terminal-messages`
        as a template, a new command code is defined:

           ((= command-code ?e)
            (save-excursion
             (find-file-other-window argument))

        It gets invoked when string "\033AnSiTe" is sent, similar
        to this:

           echo -e "\033AnSiTe" test

        as well as with an alias defined for the process via
        `term-send-raw-string`:

                  (term-send-raw-string (format "
                    alias e=\'echo -e \"\\033AnSiTe\"\'
                   ")

        and invoked as:

           e test

        Most of the time thi works.
        
        When it doesn't work as expected, one of the followig
        3 errors sometimes occurs:

           1. I get the error:

              if: Symbol’s value as variable is void:
              term-pending-delete-marker

Debugger entered--Lisp error: (void-variable term-pending-delete-marker)
  term-emulate-terminal(#<process test> "\nAnSiTe test\nAnSiTu liveuser\nAnSiTc /home/liveuser\nAnSiTh localhost.localdomain\n")


           2. The trailing "^M" of the argument gets swallowed up (omitted)
              before being passed to `term-handle-ansi-terminal-messages`,
              presumably by the function `term-send-raw-string`.
           

           3. I get the error:

              term-send-raw-string: Not enough arguments for format string


        Thanks.





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Message #8 received at 28687 <at> debbugs.gnu.org (full text, mbox):

From: Noam Postavsky <npostavs <at> users.sourceforge.net>
To: Live System User <nyc4bos <at> aol.com>
Cc: 28687 <at> debbugs.gnu.org
Subject: Re: bug#28687: 25.2; Error using term-handle-ansi-terminal-messages
Date: Wed, 11 Oct 2017 22:33:54 -0400

tags 28687 + unreproducible moreinfo
quit

Live System User <nyc4bos <at> aol.com> writes:

>         When trying to use `term-handle-ansi-terminal-messages`
>         as a template, a new command code is defined:

Do you mean you have defined some new function?  Please post a complete
example, not just fragments.

>         Most of the time thi works.
>         
>         When it doesn't work as expected,

How often does it fail?

>            1. I get the error:
> 
>               if: Symbol’s value as variable is void:
>               term-pending-delete-marker
> 
> Debugger entered--Lisp error: (void-variable term-pending-delete-marker)
>   term-emulate-terminal(#<process test> "\nAnSiTe test\nAnSiTu liveuser\nAnSiTc /home/liveuser\nAnSiTh localhost.localdomain\n")
> 

Seems like you might be running in the wrong buffer.
term-pending-delete-marker is only defined buffer-locally.

Message #13 received at 28687 <at> debbugs.gnu.org (full text, mbox):

From: Live System User <nyc4bos <at> aol.com>
To: Noam Postavsky <npostavs <at> users.sourceforge.net>
Cc: 28687 <at> debbugs.gnu.org
Subject: Re: bug#28687: 25.2; Error using term-handle-ansi-terminal-messages
Date: Mon, 16 Oct 2017 04:01:56 -0400

[Message part 1 (text/plain, inline)]

Noam Postavsky <npostavs <at> users.sourceforge.net> writes:

> tags 28687 + unreproducible moreinfo
> quit
>
> Live System User <nyc4bos <at> aol.com> writes:
>
>>         When trying to use `term-handle-ansi-terminal-messages`
>>         as a template, a new command code is defined:
>
> Do you mean you have defined some new function?  Please post a complete
> example, not just fragments.

  No: I justed added those lines to the existing
  `term-handle-ansi-terminal-messages`function:

[term-ansi.el (text/plain, attachment)]

[Message part 3 (text/plain, inline)]

>
>>         Most of the time thi works.
>>         
>>         When it doesn't work as expected,
>
> How often does it fail?

  Enough to notice buy no enough to notice a pattern.
  
>
>>            1. I get the error:
>> 
>>               if: Symbol’s value as variable is void:
>>               term-pending-delete-marker
>> 
>> Debugger entered--Lisp error: (void-variable term-pending-delete-marker)
>>   term-emulate-terminal(#<process test> "\nAnSiTe test\nAnSiTu liveuser\nAnSiTc /home/liveuser\nAnSiTh localhost.localdomain\n")
>> 
>
> Seems like you might be running in the wrong buffer.
> term-pending-delete-marker is only defined buffer-locally.

  Since I use `find-file-other-window`, i.e. another buffer,
  why don't I get that error every time that ANSI code is
  processed instead of only occasionally?

  When does `term-pending-delete-marker`kick in?

  Shouldn't it only be a factor as I am typing chacaters and/or
  interacting with the ansi-term?

  Thanks.

Message #16 received at 28687 <at> debbugs.gnu.org (full text, mbox):

From: Noam Postavsky <npostavs <at> users.sourceforge.net>
To: Live System User <nyc4bos <at> aol.com>
Cc: 28687 <at> debbugs.gnu.org
Subject: Re: bug#28687: 25.2; Error using term-handle-ansi-terminal-messages
Date: Mon, 16 Oct 2017 19:49:51 -0400

Live System User <nyc4bos <at> aol.com> writes:

> Noam Postavsky <npostavs <at> users.sourceforge.net> writes:
>
>> Do you mean you have defined some new function?  Please post a complete
>> example, not just fragments.
>
>   No: I justed added those lines to the existing
>   `term-handle-ansi-terminal-messages`function:
>
> (defun term-handle-ansi-terminal-messages (message)
[...]
> 	    ((= command-code ?e)
> 	     (save-excursion
> 	      (find-file-other-window argument))

You have a missing paren here, is that a typo introduced when posting,
or is that what you ran?

And could you elaborate on the steps you take after that?  You said
something about an alias, but I couldn't tell if it's relevant or not.

>>
>>>         Most of the time thi works.
>>>         
>>>         When it doesn't work as expected,
>>
>> How often does it fail?
>
>   Enough to notice buy no enough to notice a pattern.

So how many times do I do "it" until I should expect to see a failure?
10?  100?  1000?

And what is "it" exactly?

>>> Debugger entered--Lisp error: (void-variable term-pending-delete-marker)
>>>   term-emulate-terminal(#<process test> "\nAnSiTe test\nAnSiTu liveuser\nAnSiTc /home/liveuser\nAnSiTh localhost.localdomain\n")
>>> 
>>
>> Seems like you might be running in the wrong buffer.
>> term-pending-delete-marker is only defined buffer-locally.
>
>   Since I use `find-file-other-window`, i.e. another buffer,
>   why don't I get that error every time that ANSI code is
>   processed instead of only occasionally?
>
>   When does `term-pending-delete-marker`kick in?
>
>   Shouldn't it only be a factor as I am typing chacaters and/or
>   interacting with the ansi-term?

It's referenced in term-emulate-terminal which is a process filter, so
it could be significant during output too.

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