Re: [sdcc-devel] Using libunistring in SDCC?

[Philipp K. K. <pk...@sp...>]

Am 22.10.25 um 20:16 schrieb Benedikt Freisen via sdcc-devel:
> 
> In this case, I would like to suggest to specify that SDCC requires that 
> all identifiers are provided in normalization form C. SDCC would then 
> likely already supports all valid identifiers (and then some) and we can 
> then use a 3rd party library to generate the diagnostic messages the 
> standard demands. This library could then even be made optional.

But if we have the external library for the check for normalization, we 
could also just normalize, which IMO would be more user-friendly.

How about the following?

* The dependency on the unicode library becomes a configure option 
(default to on), or it just gets used if found at configure time (like 
we already do for treedec).

* If the library is not present: check identifier if there are any 
non-ASCII characters in it. If one is found, emit a warning, stating 
that SDCC built without the library has incomplete support for non-ASCII 
identifiers.

* If the library is present: normalize identifiers to normalization form 
C, and do the full check for XID_Start/XID_Continue.

Philipp