[utils] string_[rl]strip => string_[rl]trim, removing warning about allocation

src/string_utils.c

@@ -151,16 +151,7 @@ bool utf8_is_letter(int32_t ch) {
 
 }
 
-/* Caution: this function does not make a copy of str. Keep original pointer and free that, e.g.
-
-char *str = strdup("foobar");
-// Use stripped for comparison, etc. but copy the string if you need to keep a pointer to it
-char *stripped = string_strip_whitespace(str);
-// Only free the original pointer to str
-free(str);
-*/
-
-size_t string_rstrip(char *str) {
+size_t string_rtrim(char *str) {
     size_t spaces = 0;
 
     char *end = str + strlen(str) - 1;
@@ -174,7 +165,7 @@ size_t string_rstrip(char *str) {
     return spaces;
 }
 
-size_t string_lstrip(char *str) {
+size_t string_ltrim(char *str) {
     char *end;
 
     size_t spaces = 0;
@@ -193,7 +184,7 @@ size_t string_lstrip(char *str) {
     return spaces;
 }
 
-size_t string_strip(char *str) {
+size_t string_trim(char *str) {
     size_t spaces = string_lstrip(str);
     spaces += string_rstrip(str);
     return spaces;

src/string_utils.h

@@ -30,9 +30,9 @@ char *utf8_reversed_string(const char *s); // returns a copy, caller frees
 ssize_t utf8proc_iterate_reversed(const uint8_t *str, const uint8_t *start, int32_t *dst);
 bool utf8_is_letter(int32_t ch);
 
-size_t string_lstrip(char *str);
-size_t string_rstrip(char *str);
-size_t string_strip(char *str);
+size_t string_ltrim(char *str);
+size_t string_rtrim(char *str);
+size_t string_trim(char *str);
 
 /* Caller has to free the original string,
    also keep in mind that after operating on a char array,