#schemacs — Public Fediverse posts

The challenge of writing portable Scheme code is that every implementation has myriad little idiosyncrasies. Today I discovered the #MITScheme tries to read #Emacs -style file header comments (for example ;; -*- encoding: utf-8 -*-) and this can cause the reader to crash for some reason. I am not sure if it is a bug or a feature, but it did throw me off for a whole day while I tried to figure out why MIT Scheme wouldn’t compile a library file.

I also happen to be hung-up on a bug in #Guile 3.0.11. It seems to me like the optimizer is emitting bad code, because I get a SEGFAULT on an expression that #Gauche has no trouble executing. I am still working on a bug report, and trying to figure out a work-around.

#tech #software #Scheme #Schemacs #SchemeLang #R7RS #Lisp #GuileScheme #GaucheScheme

The challenge of writing portable Scheme code is that every implementation has myriad little idiosyncrasies. Today I discovered the #MITScheme tries to read #Emacs -style file header comments (for example ;; -*- encoding: utf-8 -*-) and this can cause the reader to crash for some reason. I am not sure if it is a bug or a feature, but it did throw me off for a whole day while I tried to figure out why MIT Scheme wouldn’t compile a library file.

I also happen to be hung-up on a bug in #Guile 3.0.11. It seems to me like the optimizer is emitting bad code, because I get a SEGFAULT on an expression that #Gauche has no trouble executing. I am still working on a bug report, and trying to figure out a work-around.

#tech #software #Scheme #Schemacs #SchemeLang #R7RS #Lisp #GuileScheme #GaucheScheme

The challenge of writing portable Scheme code is that every implementation has myriad little idiosyncrasies. Today I discovered the #MITScheme tries to read #Emacs -style file header comments (for example ;; -*- encoding: utf-8 -*-) and this can cause the reader to crash for some reason. I am not sure if it is a bug or a feature, but it did throw me off for a whole day while I tried to figure out why MIT Scheme wouldn’t compile a library file.

I also happen to be hung-up on a bug in #Guile 3.0.11. It seems to me like the optimizer is emitting bad code, because I get a SEGFAULT on an expression that #Gauche has no trouble executing. I am still working on a bug report, and trying to figure out a work-around.

#tech #software #Scheme #Schemacs #SchemeLang #R7RS #Lisp #GuileScheme #GaucheScheme

The challenge of writing portable Scheme code is that every implementation has myriad little idiosyncrasies. Today I discovered the #MITScheme tries to read #Emacs -style file header comments (for example ;; -*- encoding: utf-8 -*-) and this can cause the reader to crash for some reason. I am not sure if it is a bug or a feature, but it did throw me off for a whole day while I tried to figure out why MIT Scheme wouldn’t compile a library file.

I also happen to be hung-up on a bug in #Guile 3.0.11. It seems to me like the optimizer is emitting bad code, because I get a SEGFAULT on an expression that #Gauche has no trouble executing. I am still working on a bug report, and trying to figure out a work-around.

#tech #software #Scheme #Schemacs #SchemeLang #R7RS #Lisp #GuileScheme #GaucheScheme

I have been banging my head against #Gtk3 for the past 3 weeks and all progress has pretty much come to a stand-still. No matter how simple and straight-forward my GUI is, Gtk makes it simply impossible to get the layout correct. I am now convinced that programming my own layout algorithm from scratch and using the GtkLayout container (which lets you place widgets at arbitrary X,Y coordinates) is the only way to proceed at this point. It is soooo frustrating.

The #Gtk documentation is good, but not at all good enough. The people on the Gnome Discourse have been very kind and helpful, and I truly appreciate the engagement I have had there, but ultimately I am still not able to solve my problems.

I have decided I need find some way to keep making progress without postponing the release of the work I have done so far for an indeterminate length of time. So rather than work out all the bugs in this version before merging it to the main Git branch, what I will do instead is have the main program launch a debugger window. The debugger window will have all layout calculated in advance, and all widgets will be declared once and only once throughout the lifetime of the application to avoid the reference counting issues. Obviously the debugger GUI will be very rigid, but you will at least be able to edit files and run commands in a REPL within this debugger.

Then maybe I can merge the code I have written to the main Git branch, and people will at least be able to use it through the debugger. Maybe also I could use this debugger to help with writing my layout algorithm. Also, I need to get back to the Emacs Lisp interpreter, I haven’t worked on it in almost two months now.

#tech #software #Lisp #Emacs #EmacsLisp #Scheme #SchemeLang #R7RS