Re: A basic programming problem.
Giovanni Piredda <[email protected]> Tue, 07 Apr 2026 19:36:30 +0000
| Newsgroups | gmane.editors.texmacs.user |
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Hi David,
I don't think that these are basic questions, in that you are
programming with an interface for which there are just a few examples so
you may have to test your programs step by step on your own.
This said, I got the following to work
<assign|mc|<macro|type|<extern|set-color|<arg|type>>>>
<assign|testextern|<macro|type|<with|color|<mc|<arg|type>>|testwrite>>>
(tm-define (set-color type)
(stree->tree
(cond ((equal? (tree->stree type) "emph") "red")
((equal? (tree->stree type) "stat") "blue")
(else "black"))))
Perhaps you will find by comparison what is not working in your code. I
can test your code too if necessary, I would need the Scheme code as well.
> PS 1 : I wrote a Scheme function because the documentation seems to
> say that conditional structures, or case, are not very reliable. Is
> that true?
>
I don't know, let's see if someone else answers
> PS 2 : Could you tell me which keyboard configuration is needed to
> work efficiently on a style file under macOS? The keyboard shortcuts
> for writing work fine, but the ones for programming do not. It is
> therefore quite frustrating to have to keep using the mouse and the
> drop-down menus all the time.
>
I think you need to absorb the keyboard behaviour for programming "by
osmosis". I am not aware of a document where the keyboard behaviour is
explained. While I do think such a document would be very helpful, I
don't think I am able to write one, both because I do not have the time
*and* I do not know the behaviour in a complete and systematic way.
Let me give you one tip: you need to observe what the keys return,
backspace and the arrows do according to the cursor position (maybe
according to the surrounding code too, but I may be wrong and there is
no such dependency). For example when you are inside a macro argument,
next to the macro name, backspace will let you edit the macro name.
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<p>Hi David,</p>
<p>I don't think that these are basic questions, in that you are
programming with an interface for which there are just a few
examples so you may have to test your programs step by step on
your own.</p>
<p>This said, I got the following to work</p>
<p><assign|mc|<macro|type|<extern|set-color|<arg|type>>>></p>
<p><assign|testextern|<macro|type|<with|color|<mc|<arg|type>>|testwrite>>></p>
<p>(tm-define (set-color type)<br>
(stree->tree <br>
(cond ((equal? (tree->stree type) "emph") "red")<br>
((equal? (tree->stree type) "stat") "blue")<br>
(else "black"))))</p>
<p><br>
</p>
<p>Perhaps you will find by comparison what is not working in your
code. I can test your code too if necessary, I would need the
Scheme code as well.</p>
<blockquote type="cite"
cite="mid:[email protected]">
<div>
<div>
<p class="p3">PS 1 : I wrote a Scheme function because the
documentation seems to say that conditional structures, or <span
class="s1">case</span>, are not very reliable. Is that
true?</p>
</div>
</div>
</blockquote>
<p>I don't know, let's see if someone else answers</p>
<blockquote type="cite"
cite="mid:[email protected]">
<div>
<div>
<p class="p3">PS 2 : Could you tell me which keyboard
configuration is needed to work efficiently on a style file
under macOS? The keyboard shortcuts for writing work fine,
but the ones for programming do not. It is therefore quite
frustrating to have to keep using the mouse and the
drop-down menus all the time.</p>
</div>
</div>
</blockquote>
<p>I think you need to absorb the keyboard behaviour for programming
"by osmosis". I am not aware of a document where the keyboard
behaviour is explained. While I do think such a document would be
very helpful, I don't think I am able to write one, both because I
do not have the time *and* I do not know the behaviour in a
complete and systematic way.</p>
<p>Let me give you one tip: you need to observe what the keys
return, backspace and the arrows do according to the cursor
position (maybe according to the surrounding code too, but I may
be wrong and there is no such dependency). For example when you
are inside a macro argument, next to the macro name, backspace
will let you edit the macro name.</p>
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