diff options
Diffstat (limited to 'generic/tcl.h')
| -rw-r--r-- | generic/tcl.h | 19 |
1 files changed, 12 insertions, 7 deletions
diff --git a/generic/tcl.h b/generic/tcl.h index 82b8521..8f796cc 100644 --- a/generic/tcl.h +++ b/generic/tcl.h @@ -2135,15 +2135,16 @@ typedef struct Tcl_EncodingType { /* * The maximum number of bytes that are necessary to represent a single - * Unicode character in UTF-8. The valid values are 3 and 4 (or 6) - * (or perhaps 1 if we want to support a non-unicode enabled core). If 3, - * then Tcl_UniChar must be 2-bytes in size (UCS-2) (the default). If > 3, + * Unicode character in UTF-8. The valid values are 4 and 6 + * (or perhaps 1 if we want to support a non-unicode enabled core). If 4, + * then Tcl_UniChar must be 2-bytes in size (UCS-2) (the default). If 6, * then Tcl_UniChar must be 4-bytes in size (UCS-4). At this time UCS-2 mode - * is the default and recommended mode. + * is the default and recommended mode. UCS-4 is experimental and not + * recommended. It works for the core, but most extensions expect UCS-2. */ #ifndef TCL_UTF_MAX -#define TCL_UTF_MAX 3 +#define TCL_UTF_MAX 4 #endif /* @@ -2154,8 +2155,12 @@ typedef struct Tcl_EncodingType { #if TCL_UTF_MAX > 3 /* * int isn't 100% accurate as it should be a strict 4-byte value - * (perhaps wchar_t). ILP64 systems may have troubles. The size of this - * value must be reflected correctly in regcustom.h. + * (perhaps wchar_t). 64-bit systems may have troubles. The size of this + * value must be reflected correctly in regcustom.h and + * in tclEncoding.c. + * XXX: Tcl is currently UCS-2 and planning UTF-16 for the Unicode + * XXX: string rep that Tcl_UniChar represents. Changing the size + * XXX: of Tcl_UniChar is /not/ supported. */ typedef int Tcl_UniChar; #else |