Can't change/edit functions after having saved them about 2-4 times

[okflo]

hi Elias, hi APL-folks,

first let me thank for this sexy piece of software! I am new to the
APL-world, but really enjoy wraping my mind around these wonderful
symbols! :)

I am running current gnu-apl (svn1242) with current gnu-apl-mode
(20200108.1633) under current GNU/Linux Emacs (from git) and MacOSX
Emacs (26.3 from brew). Tried also with emacs -Q, having only
loaded gnu-apl-mode. Both versions/platform show the same error:

• having defined a function (f.e. with C-c C-f) I leave successfully
  the function editor. Function works as expected. All fine.
• reopening the function 2 or 4 times, doing some editing, f.e. adding
  comments, etc.
• BUT regularly, after 2 to 3 or 4 edits, I get (for the unchanged
  function, saved successfully before) "Error on line 1: Error parsing
  expression", being unable to proceed. Any editing, changing the
  function, no effect, still the same error.
• I have to close (C-x C-k) the editing buffer.
• Having a look at the function with []CR 'functionname' shows me,
  that nothing as been saved.
• Trying to )erase the function results in 'NOT ERASED: functionname'.

Working out of the plain terminal with gnu-apl, editing functions in
line-editing, multiple redefining functions, etc - works fine.

Thanks for any help or hint!

br okflo

[okflo]

Calling )SIC seem to mitigate the issue - as afterwards an function-edit buffer can be saved.

[JanPeterP]

Gentlemen
I am no hacker but have used it for a while . Mostly as a calculator.
I run under Linux Ubuntu 18.04.5 LTS
I Use multiple buffers
When I create the function and try to compile ctrl c -c it dont work .
I have to save it under a " name.apl "
Close the file and reopen it ctrl x -f .. " name.apl " only the first time
And then compile it then it works with no changes.
I Have noticed that when I compile - it can blink green but no function is created with no error messages
In the function buffer .But it can be a code error
this Emacs solution is the bomb I just copy the code line or lines from the function window ( buffer )
to the calling buffer past it there push enter button and get error message .Adjusting the code
and go on until ) fns in the main buffer writes that the compilation has created the function.
Variables can be set in the calling buffer so nothing needs to be in the function call
I dont use fancy APL " oneliners " i use it i more as a line for line program
And calculating in the main buffer. without functions.
I have not noticed any problems saving and editing
Straight forward world class ctrl x -s and ctrl -c - c
Up to the calling buffer move with the Mouse cursor to the )fns
to verify that the function is there with some )clear and )fns for verification
Apologize if this is off topic .. Perhaps can give some hints on how enormously good this is.
Keys Must have English keyboard .. But in Ubuntu one can have multiple and change via
Windows button and spacebar.