allow trim() public function

lib11sht.c

@@ -16,7 +16,7 @@
 
 /* Internal helpers — kept private to this translation unit. */
 static int   uselesschar(int c);
-static void  trim(char *s);
+/* trim is public (declared in lib11sht.h) */
 static void  asciify(const char *src, char *dest, size_t dest_size);
 static int   ulen(unsigned char c);
 static float shit11(char *s1, char *s2);
@@ -162,7 +162,7 @@ static int uselesschar(int c)
 
 /* ---------------------------------------------------------------------- */
 /* remove leading/trailing whitespace + collapse internal multiple whitespace */
-static void trim(char *s)
+void trim(char *s)
 {
     int len, i, j, fin = 0;
 

lib11sht.h

@@ -50,4 +50,10 @@ int sequal_full(char *a, char *b, float shold, float *ratio,
  */
 int fequal(float a, float b, float delta);
 
+/* String trim: removes leading + trailing whitespace (including UTF-8
+ * NBSP bytes 0xC2 / 0xA0) AND collapses internal runs of whitespace
+ * to a single space. Modifies s in place. Caller's buffer must already
+ * be NUL-terminated. */
+void trim(char *s);
+
 #endif /* LIB11SHT_H */