Commits on Sep 23, 2024

1. Add UTF-8 to UTF-32 decoding …

   Add internal functions to convert UTF-32 to UTF-8, with corresponding
   tests.

   

   wismill committed Sep 23, 2024
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2. xkbcli how-to-type: Enhance arguments parsing & doc …

   Currently the positional parameter of the CLI is either a Unicode code
   point or a keysym. However their respective format is not documented.
   
   It turns out that there are multiple issues due to the use of `strtol`:
   - Code points can be parsed as octal, decimal and hexadecimal, while
     keysyms can only be parsed as hexadecimal. Some programs outputs
     keysyms in their decimal form (e.g. `wev`) so it is worth to bring
     symmetry with code points.
   - Octal format is unusual for both and is triggered by leading zeros,
     which is unintuitive in this context.
   - `U+NNNN` format is the standard format for Unicode code points but is
     not supported.
   - Plain characters are not supported, e.g.: a, é, ß, Æ, γ, 🦆, etc.
     Although this is probably the easiest format for most users.
   
   Fixed the issues above:
   - Allow the code point to be passed exactly in the following formats:
     - Literal character (requires UTF-8 character encoding of the terminal);
     - Decimal number;
     - Hexadecimal number: either `0xNNNN` or `U+NNNN` (any digit count)
   - Allow the keysym to be passed exactly in the following formats:
     - Decimal number;
     - Hexadecimal number: `0xNNNN` (any digit count);
     - Name.
   - Improve both `--help` message and manual page.

   

   wismill committed Sep 23, 2024
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