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-rw-r--r--generic/tclInt.h6
1 files changed, 4 insertions, 2 deletions
diff --git a/generic/tclInt.h b/generic/tclInt.h
index 9dde88b..8088d0e 100644
--- a/generic/tclInt.h
+++ b/generic/tclInt.h
@@ -3252,12 +3252,14 @@ MODULE_SCOPE int TclUtfCount(int ch);
#if TCL_UTF_MAX > 3
# define TclUtfToUCS4 Tcl_UtfToUniChar
# define TclUniCharToUCS4(src, ptr) (*ptr = *(src),1)
+# define TclUCS4Prev(src, ptr) (((src) > (ptr)) ? ((src) - 1) : (src))
# define TclUCS4Complete Tcl_UtfCharComplete
# define TclChar16Complete(src, length) (((unsigned)((unsigned char)*(src) - 0xF0) < 5) \
? ((length) >= 3) : Tcl_UtfCharComplete((src), (length)))
#else
- MODULE_SCOPE int TclUtfToUCS4(const char *src, int *ucs4Ptr);
- MODULE_SCOPE int TclUniCharToUCS4(const Tcl_UniChar *src, int *ucs4Ptr);
+ MODULE_SCOPE int TclUtfToUCS4(const char *, int *);
+ MODULE_SCOPE int TclUniCharToUCS4(const Tcl_UniChar *, int *);
+ MODULE_SCOPE const Tcl_UniChar *TclUCS4Prev(const Tcl_UniChar *, const Tcl_UniChar *);
# define TclUCS4Complete(src, length) (((unsigned)((unsigned char)*(src) - 0xF0) < 5) \
? ((length) >= 4) : Tcl_UtfCharComplete((src), (length)))
# define TclChar16Complete Tcl_UtfCharComplete