netdev - [PATCH v2 18/25] docs: kdoc_re: Change NestedMath args replacement to \0

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Message-ID: <323b4c67ae7fd241670ef0b5ff6eeb10d968415e.1769617841.git.mchehab+huawei@kernel.org>
Date: Wed, 28 Jan 2026 17:50:16 +0100
From: Mauro Carvalho Chehab <mchehab+huawei@...nel.org>
To: Jonathan Corbet <corbet@....net>,
	Linux Doc Mailing List <linux-doc@...r.kernel.org>
Cc: Mauro Carvalho Chehab <mchehab+huawei@...nel.org>,
	bpf@...r.kernel.org,
	intel-wired-lan@...ts.osuosl.org,
	linux-kernel@...r.kernel.org,
	netdev@...r.kernel.org,
	Peter Zijlstra <peterz@...radead.org>,
	Randy Dunlap <rdunlap@...radead.org>,
	Stephen Rothwell <sfr@...b.auug.org.au>
Subject: [PATCH v2 18/25] docs: kdoc_re: Change NestedMath args replacement to \0

Future patches will allow parsing each argument instead of the
hole set. Prepare for it by changing the replace all args from
\1 to \0.

No functional changes.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@...nel.org>
---
 tools/lib/python/kdoc/kdoc_parser.py | 2 +-
 tools/lib/python/kdoc/kdoc_re.py     | 9 +++++----
 2 files changed, 6 insertions(+), 5 deletions(-)

diff --git a/tools/lib/python/kdoc/kdoc_parser.py b/tools/lib/python/kdoc/kdoc_parser.py
index db140363104a..4d52a00acfad 100644
--- a/tools/lib/python/kdoc/kdoc_parser.py
+++ b/tools/lib/python/kdoc/kdoc_parser.py
@@ -160,7 +160,7 @@ struct_xforms = [
 # is allowed.
 #
 struct_nested_prefixes = [
-    (re.compile(r'\bSTRUCT_GROUP\('), r'\1'),
+    (re.compile(r'\bSTRUCT_GROUP\('), r'\0'),
 ]
 
 #
diff --git a/tools/lib/python/kdoc/kdoc_re.py b/tools/lib/python/kdoc/kdoc_re.py
index b6e11ee0be21..28ca5032f40c 100644
--- a/tools/lib/python/kdoc/kdoc_re.py
+++ b/tools/lib/python/kdoc/kdoc_re.py
@@ -271,8 +271,9 @@ class NestedMatch:
         It matches a regex that it is followed by a delimiter,
         replacing occurrences only if all delimiters are paired.
 
-        if r'\1' is used, it works just like re: it places there the
-        matched paired data with the delimiter stripped.
+        if r'\0' is used, it works on a similar way of using re.group(0):
+        it places the entire args of the matched paired data, with the
+        delimiter stripped.
 
         If count is different than zero, it will replace at most count
         items.
@@ -288,9 +289,9 @@ class NestedMatch:
             # Value, ignoring start/end delimiters
             value = line[end:pos - 1]
 
-            # replaces \1 at the sub string, if \1 is used there
+            # replaces \0 at the sub string, if \0 is used there
             new_sub = sub
-            new_sub = new_sub.replace(r'\1', value)
+            new_sub = new_sub.replace(r'\0', value)
 
             out += new_sub
 
-- 
2.52.0