Node:C Function Headings
Showing C Function Headings
To show in which functions differences occur for C and similar
languages, you can use the
This option automatically defaults to the context output format
(see Context Format), with the default number of lines of context.
You can override that number with
-C lines elsewhere in the
command line. You can override both the format and the number with
-U lines elsewhere in the command line.
--show-c-function options are equivalent to
-F '^[[:alpha:]$_]' if the unified format is specified, otherwise
-c -F '^[[:alpha:]$_]' (see Specified Headings). GNU
diff provides them for the sake of convenience.