docs: kdoc_output: Change the logic to handle man highlight

The code inside ManFormat code to output man pages is too simple:
it produces very bad results when the content has tables or code
blocks.

Change the way lines are parsed there to allow adding extra
logic to handle some special cases.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <6ae2301a40b3fcb4381dd9dda8c75d14f9616b46.1772810752.git.mchehab+huawei@kernel.org>

1 files changed, 16 insertions, 8 deletions

diff --git a/tools/lib/python/kdoc/kdoc_output.py b/tools/lib/python/kdoc/kdoc_output.py
index c25f80a39cdc..9caffe0d9753 100644
--- a/tools/lib/python/kdoc/kdoc_output.py
+++ b/tools/lib/python/kdoc/kdoc_output.py
@@ -755,15 +755,23 @@ class ManFormat(OutputFormat):
         if isinstance(contents, list):
             contents = "\n".join(contents)
 
-        for line in contents.strip("\n").split("\n"):
-            line = KernRe(r"^\s*").sub("", line)
-            if not line:
-                continue
+        lines = contents.strip("\n").split("\n")
+        i = 0
 
-            if line[0] == ".":
-                self.data += "\\&" + line + "\n"
-            else:
-                self.data += line + "\n"
+        while i < len(lines):
+            org_line = lines[i]
+
+            line = KernRe(r"^\s*").sub("", org_line)
+
+            if line:
+                if line[0] == ".":
+                    self.data += "\\&" + line + "\n"
+                    i += 1
+                    continue
+
+            i += 1
+
+            self.data += line + "\n"
 
     def out_doc(self, fname, name, args):
         if not self.check_doc(name, args):