Path: news.eternal-september.org!eternal-september.org!.POSTED!not-for-mail
From: Eric Brunel <eric.brunel@pragmadev.invalid.com>
Newsgroups: comp.lang.tcl
Subject: Mouse "words" vs. keyboard "words"
Date: Tue, 3 Jun 2025 13:14:41 -0000 (UTC)
Organization: A noiseless patient Spider
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Hello all,

I noticed something with tk 9.0.1 that I find a little bit confusing. 
According to the man pages, in the text widgets, here is the behavior of 
some of the bindings related to words:

- In the "Bindings" section, list item 2, it is specified that "Double-
clicking with mouse button 1 selects the word under the mouse";
- In the same section, list item 9, it is specified that "Control-Left and 
Control-Right move the insertion cursor by words".

So far so good. Now let's try: in a text widget, I type the text 
"foo.bar". If I double-click on "foo" or "bar", it selects the word "foo", 
or the word "bar", respectively. Now if I put my insertion point just 
after "bar" and press Control+Left, I would expect the insertion point to 
move at the beginning of "bar". But that's not what it does: it moves 
before "foo", as if the "." was part of the word, when it wasn't with the 
double-click. And same the other way: if my insertion point is before 
"foo" and I press Control+Right, the insertion point moves after "bar".

I get caught every time I try to move my cursor by words with the 
keyboard, and it's kind of annoying. Also, I tested with tk 8.6 and it 
wasn't what it was doing, at least on Linux: Control+Left and 
Control+Right were identifying words the same way as the double-click 
does.

Is the tk 9.0 behavior intentional? If it is, why are words when using the 
mouse different from the words when using the keyboard? Is there a 
rationale behind that?

Cheers!