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Typing glyphs on Linux: Difference between revisions
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Add entry on xmodmap
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Since mid-2012, most Linux distributions with [[wikipedia:X_Window_System|X11]] have [[Dyalog APL]] keyboard support included with the distribution,<ref>[[Dyalog]] [[Forums]]. [https://forums.dyalog.com/viewtopic.php?f=20&t=210 Keyboard setup on Linux]. Sep 21, 2010.</ref> using <source lang=console inline>xkb</source>, the [https://www.x.org/wiki/XKB/ X Keyboard Extension].<ref>[[Geoff Streeter]]. [https://www.dyalog.com/uploads/conference/dyalog10/presentations/P19_Streeter_Keyboards.pdf Supporting APL keyboards on Linux]. [[Dyalog '10]].</ref> | Since mid-2012, most Linux distributions with [[wikipedia:X_Window_System|X11]] have [[Dyalog APL]] keyboard support included with the distribution,<ref>[[Dyalog]] [[Forums]]. [https://forums.dyalog.com/viewtopic.php?f=20&t=210 Keyboard setup on Linux]. Sep 21, 2010.</ref> using <source lang=console inline>xkb</source>, the [https://www.x.org/wiki/XKB/ X Keyboard Extension].<ref name="Dyalog APL XKB">[[Geoff Streeter]]. [https://www.dyalog.com/uploads/conference/dyalog10/presentations/P19_Streeter_Keyboards.pdf Supporting APL keyboards on Linux]. [[Dyalog '10]].</ref> | ||
== setxkbmap == | == setxkbmap == | ||
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A full list of keys that can be used to switch layouts is included in <source lang=console inline>/usr/share/X11/xkb/rules/evdev.lst</source> under the <source lang=console inline>option</source> category. | A full list of keys that can be used to switch layouts is included in <source lang=console inline>/usr/share/X11/xkb/rules/evdev.lst</source> under the <source lang=console inline>option</source> category. | ||
Note: | |||
* These changes are not permanent; the user will have to select one of a myriad of methods to run the command on startup. Alternatively, if they use one of the [[wikipedia:Desktop_environment|desktop environments]] listed below, they can follow those instructions. | * These changes are not permanent; the user will have to select one of a myriad of methods to run the command on startup. Alternatively, if they use one of the [[wikipedia:Desktop_environment|desktop environments]] listed below, they can follow those instructions. | ||
* If you want to specify a different language, say for United Kingdom, specify | * If you want to specify a different language, say for United Kingdom, specify <source lang=console inline>gb</source> instead of <source lang=console inline>us</source> (not <source lang=console inline>uk</source>) | ||
== GNOME == | == GNOME == | ||
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And you're done! Try holding down the Windows key and pressing <kbd>H</kbd> on your keyboard — you should see a <code>∆</code>. | And you're done! Try holding down the Windows key and pressing <kbd>H</kbd> on your keyboard — you should see a <code>∆</code>. | ||
== xmodmap == | |||
Modifying the Linux keyboard to support APL keys via [https://linux.die.net/man/1/xmodmap xmodmap(1)] is possible, but not recommended — it has been superseded by the [https://wiki.archlinux.org/title/X_keyboard_extension X keyboard extension] (XKB). Generally <source lang=console inline>xmodmap</source> is best for simple tasks,<ref>ArchWiki Contributors. [https://wiki.archlinux.org/title/xmodmap xmodmap]. 19 July 2021</ref> which APL keyboards often tend not to be. [[Dyalog APL]], for example, has native support for XKB.<ref name="Dyalog APL XKB"/> | |||
For users who understand the pitfalls, an example <source lang=console inline>~/.Xmodmap</source> can be [https://gist.github.com/Russtopia/20ae5ab571d5bed73359ca956d9010a7 found at this GitHub Gist]. | |||
== Troubleshooting == | == Troubleshooting == | ||
=== Gnome catches keystrokes before Dyalog === | |||
After upgrading Ubuntu 21.04 (Hirsute Hippo), Gnome catches the keystrokes from the <kbd>Super</kbd> key to show the list of applications, before Dyalog can receive it. [[#setxkbmap|Changing the shifting key]] from <source lang=console inline>grp:win_switch</source> to <source lang=console inline>grp:caps_switch</source> avoids the issue. Changing it to <source lang=console inline>grp:rctrl_switch</source> does not work. | |||
=== Dyalog Overrides Current Keyboard Settings === | === Dyalog Overrides Current Keyboard Settings === | ||