Re: custom keyboard layout - select and middle-click paste in xterm -lc

[Zenaan Harkness <zenaan@freedbms.net>]

On Thu, Sep 14, 2017 at 06:35:16PM +1000, Zenaan Harkness wrote:
> So I've mapped the function (mathematical) symbol to Level3-Shift + `
> (backtick) - created a custom keyboard layout in
> /usr/share/X11/xkb/symbols/...

Further, I just copied the "us" file, gave it a custom name, and
modified the first "key <TLDE> ..." line to read as follows:

  key <TLDE> { [ grave, asciitilde, function, U266E ] };

and also added the following line to the bottom of that first section
in that file:

  include "level3(lwin_switch)"


Additionally ("of course") I added a "layout" entry to the file:
/usr/share/X11/xkb/rules/base/evdev.xml (or "base.xml" - they look
the same, dunno what's the diff sorry);

edited:
 /etc/default/keyboard
    XKBLAYOUT="mycustomlayoutfilename"
    XKBVARIANT="basic" # needed ??
    XKBOPTIONS="lv3:lwin_switch,terminate:ctrl_alt_bksp"

ran:
 sudo setupcon
 sudo dpkg-reconfigure xkb-data keyboard-configuration

double-checked /etc/default/keyboard and re-ran setupcon,

and finally rebooted.

Nothing to it (at least not after you've tried many combinations,
searched and read a lot, and rebooted more times than my second
memory cell is capable of remembering :)


> The following locale is enabled: en_us.UTF-8
> 
> The character in utf-8 is as follows:
> 
> ƒ
> 
> (It should look like an italic lowercase letter f.)
> 
> I've also mapped LWin (the LHS "Windows"/ "OS"/ "Logo" key) to be my
> Level 3 chooser key.
> 
> After running sudo setupcon, I can type LWin + ` (hold left logo key
> (like a shift key) then press and release backtick) and at the Linux
> console I get the "function symbol" (a slightly slanted lowercase f).
> 
> Having enabled console-mouse, I can also select and right-click paste
> this, at the Linux console.
> 
> I've also mapped the musical natural sign:
> 
> ♮
> 
> To be at the 4th level of the backtick key on my custom keyboard
> layout, accessed by pressing (in my case) LWin + Shift + `
> 
> 
> On to Xorg:
> 
> 
> Mystery 1:
> ------------------
> In Xorg, the following xorg terminal allows my to type the key
> combinations for ƒ and ♮ :
> 
>  LC_ALL=en_us.UTF-8 xterm -lc
> 
> however the following xterms do NOT allow entry of these two
> unicode characters ƒ and ♮ :
> 
>  LC_ALL=en_us.UTF-8 xterm
>  LC_ALL=en_us.UTF-8 xterm -u8
>  LC_ALL=en_us.UTF-8 uxterm
> 
> 
> QUESTION 1: Why is it that only "xterm -lc" allows entry of these
> unicode characters ƒ and ♮ ?
> 
> 
> 
> Mystery 2:
> ------------------
> using the terminal "xterm -lc", I now try to copy and paste:
> 
> 
>  A) type the musical natural sign ♮ into the terminal (or a run of
>     them), then select/highlight them with the mouse, then
>     middle-click to paste back into the terminal.
> 
>     This works as expected
> 
> 
>  B) type the function sign ƒ into the terminal (or a run of them),
>     then select/highlight them with the mouse, then middle-click
>     to paste back into the terminal.
> 
>     This does NOT work as expected - instead of the function sign
>     being pasted, I get a question mark (or run of question marks).
> 
> 
> QUESTION 2: Why is it that only some unicode characters can be copy
> and pasted into "xterm -lc" and not other unicode characters?
> 
> 
> TIA :)
>