* Related to the contents of the buffer
+`strbuf_trim`::
+
+ Strip whitespace from the beginning and end of a string.
+ Equivalent to performing `strbuf_rtrim()` followed by `strbuf_ltrim()`.
+
`strbuf_rtrim`::
Strip whitespace from the end of a string.
+`strbuf_ltrim`::
+
+ Strip whitespace from the beginning of a string.
+
+`strbuf_reencode`::
+
+ Replace the contents of the strbuf with a reencoded form. Returns -1
+ on error, 0 on success.
+
+`strbuf_tolower`::
+
+ Lowercase each character in the buffer using `tolower`.
+
`strbuf_cmp`::
Compare two buffers. Returns an integer less than, equal to, or greater
use it unless you need the correct position in the file
descriptor.
+`strbuf_getcwd`::
+
+ Set the buffer to the path of the current working directory.
+
+`strbuf_add_absolute_path`
+
+ Add a path to a buffer, converting a relative path to an
+ absolute one in the process. Symbolic links are not
+ resolved.
+
`stripspace`::
Strip whitespace from a buffer. The second parameter controls if