strbuf.h: drop boilerplate descriptions of strbuf_split_*

The description of strbuf_split_buf says most of what
needs to be said for all of the split variants that take
strings, raw memory, etc. We have a boilerplate comment
above each that points to the first. This boilerplate
ends up making it harder to read, because it spaces out the
functions, which could otherwise be read as a group.

Let's drop the boilerplate completely, and mention the
variants in the top comment. This is perhaps slightly worse
for a hypothetical system which pulls the documentation for
each function out of the comment immediately preceding it.
But such a system does not yet exist, and anyway, the end
result of extracting the boilerplate comments would not lead
to a very easy-to-read result.  We would do better in the
long run to teach the extraction system about groups of
related functions.
Signed-off-by: NJeff King <peff@peff.net>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

strbuf.h

@@ -441,36 +441,29 @@ static inline int strbuf_strip_suffix(struct strbuf *sb, const char *suffix)
  * substring containing everything following the (max-1)th terminator
  * character).
  *
+ * The most generic form is `strbuf_split_buf`, which takes an arbitrary
+ * pointer/len buffer. The `_str` variant takes a NUL-terminated string,
+ * the `_max` variant takes a strbuf, and just `strbuf_split` is a convenience
+ * wrapper to drop the `max` parameter.
+ *
  * For lighter-weight alternatives, see string_list_split() and
  * string_list_split_in_place().
  */
 extern struct strbuf **strbuf_split_buf(const char *, size_t,
 					int terminator, int max);
 
-/**
- * Split a NUL-terminated string at the specified terminator
- * character.  See strbuf_split_buf() for more information.
- */
 static inline struct strbuf **strbuf_split_str(const char *str,
 					       int terminator, int max)
 {
 	return strbuf_split_buf(str, strlen(str), terminator, max);
 }
 
-/**
- * Split a strbuf at the specified terminator character.  See
- * strbuf_split_buf() for more information.
- */
 static inline struct strbuf **strbuf_split_max(const struct strbuf *sb,
 						int terminator, int max)
 {
 	return strbuf_split_buf(sb->buf, sb->len, terminator, max);
 }
 
-/**
- * Split a strbuf at the specified terminator character.  See
- * strbuf_split_buf() for more information.
- */
 static inline struct strbuf **strbuf_split(const struct strbuf *sb,
 					   int terminator)
 {