[PATCH] libcpp: add function to check XID properties

[Jakub Jelinek]

On Fri, Sep 08, 2023 at 02:58:40PM +0200, Arthur Cohen wrote:
> From: Raiki Tamura <tamaron1203@gmail.com>
> 
> libcpp/ChangeLog:
> 
> 	* charset.cc (check_xid_property):new function to check XID_Start and XID_Continue
> 	* include/cpplib.h (check_xid_property):add enum representing XID properties

Just random comments, not a proper review.
1) functions exported from libcpp should IMNSHO use the cpp_ prefix
2) similarly the enumerators should be prefixed with CPP_
3) formatting of the ChangeLog entry is incorrect.  There should be a space
after ): followed by uppercase rather than lowercase letter, descriptions
should end with . and there should be line wrapping so that it fits into 80
columns.  For a new function, one can just say New. or New function.,
doesn't need to describe what it is good for.  And the include/cpplib.h
changes don't describe what actually changed.  A new anonymous enum (why not
a named one?) was added, and check_xid_property declared.

> --- a/libcpp/include/cpplib.h
> +++ b/libcpp/include/cpplib.h
> @@ -1606,4 +1606,11 @@ bool cpp_valid_utf8_p (const char *data, size_t num_bytes);
>  bool cpp_is_combining_char (cppchar_t c);
>  bool cpp_is_printable_char (cppchar_t c);
>  
> +enum {
> +   XID_START = 1,
> +   XID_CONTINUE = 2

Formatting.  There should be indentation just by 2 columns rather than 3.

	Jakub