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66f71890
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2025-03-31T08:01:29
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symbols: Enable writing keysyms list as UTF-8 strings
Each Unicode code point of the string will be translated to their
respective keysym, if possible. An empty string denotes `NoSymbol`.
When such conversion is not possible, this will raise a syntax error.
This introduces the following syntax:
```c
// Empty string = `NoSymbol`
key <1> {[""]}; // NoSymbol
// Single code point = single keysym
key <2> {["é"]}; // eacute
// String = translate each code point to their respective keysym
key <3> {["sßξك🎺"]}; // {s, ssharp, Greek_xi, Arabic_kaf, U1F3BA}
// Mix string and keysyms
key <4> {[{"ξ", Greek_kappa, "β"}]}; // { Greek_xi, Greek_kappa, Greek_beta}
```
It can also be used wherever a keysym is required, e.g. in `interpret`
and `modifier_map` statements. In these cases a single keysym is expected,
so the string should contain *exactly one* Unicode code point.
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