Node:C Function Headings, Previous:Specified Headings, Up:Sections
To show in which functions differences occur for C and similar
languages, you can use the -p
or --show-c-function
option.
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.
The -p
and --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.