/** Counts occurrences of @chr in @str. **/
uns str_count_char(const char *str, uns chr);
-/** Returns a non-zero value if @haystack starts with @needle. **/
-int str_starts_with(const char *haystack, const char *needle);
-
-/** Returns a non-zero value if @haystack ends with @needle. **/
-int str_ends_with(const char *haystack, const char *needle);
-
/* str-esc.c */
/**