[PATCH 1/3] kernel-doc: bugfix - multi-line macros

[Daniel Santos <daniel.santos@pobox.com>]

Prior to this patch the following code breaks:

/**
 * multiline_example - this breaks kernel-doc
 */
 #define multiline_example( \
myparam)

Producing this error:

Error(somefile.h:983): cannot understand prototype: 'multiline_example( \ '

This patch fixes the issue by appending all lines ending in a blackslash
(optionally followed by whitespace), removing the backslash and any
whitespace after it prior to appending (just like the C pre-processor
would).

This fixes a break in kerel-doc introduced by the additions to rbtree.h.

Signed-off-by: Daniel Santos <daniel.santos@pobox.com>
---
 scripts/kernel-doc |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/scripts/kernel-doc b/scripts/kernel-doc
index 5ee8e91..e6bc9db 100755
--- a/scripts/kernel-doc
+++ b/scripts/kernel-doc
@@ -2305,6 +2305,9 @@ sub process_file($) {
 
     $section_counter = 0;
     while (<IN>) {
+	while (s/\\\s*$//) {
+	    $_ .= <IN>;
+	}
 	if ($state == 0) {
 	    if (/$doc_start/o) {
 		$state = 1;		# next line is always the function name
-- 
1.7.3.4