to the empty string. Both or the second "c_fix_arg"s may be
omitted and the file will still be wrapped.
+ THERE IS A SPECIAL EXCEPTION TO THIS, HOWEVER:
+
+ If the regular expression '#if.*__need' is found, then it is
+ assumed that the file needs to be read and interpreted more
+ than once. However, the prolog and epilog text (if any) will
+ be inserted.
+
v) format - Replaces text selected with a regular expression with
a specialized formating string. The formatting works as follows:
The format text is copied to the output until a '%' character