Re: Alt+Home and Alt+End not recognized on urxvt

Benno Schulenberg <[email protected]> Sat, 11 May 2024 16:41:51 +0200

Newsgroups	gmane.editors.nano.devel
Message-ID	<[email protected]>

Hello Sébastien,

>> Anyway, does applying the attached patch (with -p1) to nano-8.0 solve the 
>> issue for you?
> 
> Yes, thanks! Well done.

Okay.  This seems to be a bug in urxvt: for Alt+Home and Alt+End
it doesn't produce dedicated escape sequences but wrongly produces
an extra escape (in my case) or sets the high bit on the last byte
in the sequence for Home/End (in your case).  You probably have
'URxvt.meta8: True' in your ~/.Xresources file, right?

Anyway, workarounds for that bug are now in git:

   https://git.savannah.gnu.org/cgit/nano.git/commit/?id=363a4378


>> Then maybe https://nano-editor.org/dist/latest/faq.html#4.2 needs to be 
>> extended with:
>>    URxvt.keysym.M-Home: \033[1;3H
>>    URxvt.keysym.M-End: \033[1;3F
> 
> No need for me to add this to get Ctrl+Home working.

??  Those sequences are meant for Alt+Home/End, not for Ctrl+Home/End.

(But nano does not recognize these sequences yet.  Will fix later.)


> But regarding the FAQ, §4.2 : if I understand correctly, Ctrl+Shift+Right should 
> select all the word at its right, in one go.

Correct.

> For me it does not work. It is as 
> if the Ctrl key were not pressed; Nano selects the word incrementaly, one more 
> letter at a time as if I had pressed Shift+Right only.

It works fine here, because I have these lines in my ~/.Xresources:

     URxvt.keysym.C-S-Right: \033[1;6C
     URxvt.keysym.C-S-Left: \033[1;6D

If you do not use these key combos in other terminal programs, then
adding them to your ~/.Xresources file should have no ill effect.


> ~> locate rxvt-unicode-256color
> /usr/lib/terminfo/r/rxvt-unicode-256color
> 
> ~> dpkg -S rxvt-unicode-256color
> ncurses-base: /lib/terminfo/r/rxvt-unicode-256color

Oh.  I have that file too.  What happened is that I had ncurses-6.5
installed manually, and then it looked for terminal descriptions in
/usr/local/share/terminfo, not in /lib/terminfo.  After uninstalling
the newer ncurses, rxvt-unicode-256color is found just fine.


Benno

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