![]() The advantage of this method is that since it modifies the system files, the user can choose the new layout using the usual interface provided by their desktop manager and make it permanent. While this is a non-invasive method, one has to load manually the configuration file whenever is needed. (There might be some warnings for symbols not defined) xkb file can be created with this command: xkb file and a symbol file in a symbols subdirectory. Single-user configurationįor a personal configuration it's enough to create a. The advantage of this method is that input of characters usually unreachable on a normal keyboard is as easy as pressing the combination of the shift plus another key to output an uppercase letter. XKB provides for the possibility to add a level 5 switch key which, used in combination with the shift key, would switch to a level 6 layout.įor an in-depth explanation see this page. The combination of the level-3 modifier and the shift key would switch to a fourth layout: level 4. There are more levels available one can configure a certain key, let's say the right alt key (or AltGr), as a switch to a third level. For example the symbol a is the output of the key marked as "A" at level 1 the symbol A belongs to the level 2 layout, which is normally reached using the shift key. XKB provides the concept of multi-layout or shift levels. The X Window System receives keyboard events using the XKB extension, which makes it possible to read the output of various kinds of keyboards, provided that there's a configuration file available. Setting -xim should also allow programs not using ibus to still use the xim input method and be backward compatible. ![]() Ibus-daemon - xim - verbose - daemonize - replace You may have issues using the compose key in all programs. It might be necessary to install a xim bridge as well, such as uim-xim. In GNOME, XCompose was overridden and replaced with a hardcoded list, but it is possible to restore XCompose by setting GTK_IM_MODULE=xim in your environment. XCompose file and is an extremely complete one. XCompose allows customizing the digraph sequences using a. So, for example, to input »+« you could type CAPSLOCK > + CAPSLOCK < < In GNOME 2 and MATE this can be setup under Preferences → Keyboard → Layouts → Options → Position of Compose Key. The default of AltGr + Shift can be remapped to something easier such as Capslock. Xorg includes digraph support using a Compose key. General information about entering unicode under various operating systems and environments can be found on the Wikipedia unicode input page. Hence it is good to know how to enter these symbols into editors, the Raku shell and the command line, especially if the symbols aren't available as actual characters on a keyboard. Many operators are defined with unicode symbols (in particular the set/bag operators) as well as some quoting constructs. Microsoft was already using Unicode to refer to their encoding and never changed.Raku allows the use of unicode characters as variable names. When 65536 code points were determined to be inadequate, surrogate pairs were invented as a way to extend the range and UTF-16 was born. Otherwise you must specify the coding yourself with the "Encoding" dropdown list.Įdit: the reason Windows documentation isn't more specific about the encoding is that Windows was a very early adopter of Unicode, and at the time there was only one encoding of 16 bits per code point. If the file has a BOM then Notepad will read it and process the contents appropriately. You may use Notepad as an example of how this is done. That still doesn't tell you if it's UTF-8 or some other Windows character encoding, you'll just have to guess. ![]() 0xfe 0xff UTF-16 big-endianĪ file that doesn't have a BOM should be assumed to be 8-bit characters unless you know how it was written. It not only indicates that the file is most probably Unicode, but it tells you which variant of Unicode encoding. The 0xfe 0xff you see at the start of the file is a Byte Order Mark or BOM. Windows itself does not specify the encoding of files, it leaves that to individual applications. ![]() But that's not what you're talking about - you're looking at file contents. The values stored in memory for Windows are UTF-16 little-endian, always. ![]()
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