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GET /api/1.0/patches/2197663/?format=api
HTTP 200 OK
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Vary: Accept

{
    "id": 2197663,
    "url": "http://patchwork.ozlabs.org/api/1.0/patches/2197663/?format=api",
    "project": {
        "id": 46,
        "url": "http://patchwork.ozlabs.org/api/1.0/projects/46/?format=api",
        "name": "Intel Wired Ethernet development",
        "link_name": "intel-wired-lan",
        "list_id": "intel-wired-lan.osuosl.org",
        "list_email": "intel-wired-lan@osuosl.org",
        "web_url": "",
        "scm_url": "",
        "webscm_url": ""
    },
    "msgid": "<cee0338b152e57b841664bde9081db6f34ad5d33.1771408406.git.mchehab+huawei@kernel.org>",
    "date": "2026-02-18T10:12:50",
    "name": "[20/38] docs: kdoc_re: add support on NestedMatch for argument replacement",
    "commit_ref": null,
    "pull_url": null,
    "state": "handled-elsewhere",
    "archived": false,
    "hash": "aa051ca38eec25e712a78a4209aa95480099933e",
    "submitter": {
        "id": 78235,
        "url": "http://patchwork.ozlabs.org/api/1.0/people/78235/?format=api",
        "name": "Mauro Carvalho Chehab",
        "email": "mchehab+huawei@kernel.org"
    },
    "delegate": null,
    "mbox": "http://patchwork.ozlabs.org/project/intel-wired-lan/patch/cee0338b152e57b841664bde9081db6f34ad5d33.1771408406.git.mchehab+huawei@kernel.org/mbox/",
    "series": [
        {
            "id": 492532,
            "url": "http://patchwork.ozlabs.org/api/1.0/series/492532/?format=api",
            "date": "2026-02-18T10:12:30",
            "name": "docs: several improvements to kernel-doc",
            "version": 1,
            "mbox": "http://patchwork.ozlabs.org/series/492532/mbox/"
        }
    ],
    "check": "pending",
    "checks": "http://patchwork.ozlabs.org/api/patches/2197663/checks/",
    "tags": {},
    "headers": {
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        "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed; d=osuosl.org;\n\ts=default; t=1771409613;\n\tbh=kecqzCd+FZoNOUKJXSTKSeC+z7ee4jW/GR0X8AqLv1A=;\n\th=From:To:Cc:Date:In-Reply-To:References:Subject:List-Id:\n\t List-Unsubscribe:List-Archive:List-Post:List-Help:List-Subscribe:\n\t From;\n\tb=6xwHbyDKGVDGfNNtHV62+lIbEHlwYqxJlHieXDm26RbDRi6iZ/PNVVx6vivKtUxE/\n\t ZCQYJ18/hwP/fCsqyHljr1oVXZtcIkPxLHTOjLOaG5Tv0j7xJlvDZjunUgaeGzSr5u\n\t Nm7M4rdgRe8+GqKgdnAsbhPMAQ37m9KQiyLlcNu67vNiuOqxdOA7rZJggI3OSIu6x+\n\t feD/aZk2m2Okiaan3Zt65EuOZ8qmXcwOC4kbl0jBjsqb784eBX11MKq32ai9dPajBr\n\t fFrsVFG7xUyg3TYidfru1bJYfmJKNgW6U8pG0t/05e3txO3C60hoIPhLf2pz0HNeox\n\t UHZMBYlh/28Hg==",
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        "From": "Mauro Carvalho Chehab <mchehab+huawei@kernel.org>",
        "To": "Jonathan Corbet <corbet@lwn.net>,\n Linux Doc Mailing List <linux-doc@vger.kernel.org>",
        "Cc": "Mauro Carvalho Chehab <mchehab+huawei@kernel.org>,\n intel-wired-lan@lists.osuosl.org, linux-hardening@vger.kernel.org,\n linux-kernel@vger.kernel.org, netdev@vger.kernel.org,\n Aleksandr Loktionov <aleksandr.loktionov@intel.com>,\n Randy Dunlap <rdunlap@infradead.org>",
        "Date": "Wed, 18 Feb 2026 11:12:50 +0100",
        "Message-ID": "\n <cee0338b152e57b841664bde9081db6f34ad5d33.1771408406.git.mchehab+huawei@kernel.org>",
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        ],
        "Subject": "[Intel-wired-lan] [PATCH 20/38] docs: kdoc_re: add support on\n NestedMatch for argument replacement",
        "X-BeenThere": "intel-wired-lan@osuosl.org",
        "X-Mailman-Version": "2.1.30",
        "Precedence": "list",
        "List-Id": "Intel Wired Ethernet Linux Kernel Driver Development\n <intel-wired-lan.osuosl.org>",
        "List-Unsubscribe": "<https://lists.osuosl.org/mailman/options/intel-wired-lan>,\n <mailto:intel-wired-lan-request@osuosl.org?subject=unsubscribe>",
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        "Sender": "\"Intel-wired-lan\" <intel-wired-lan-bounces@osuosl.org>"
    },
    "content": "Currently, NestedMatch has very limited support for aguments\nreplacement: it is all or nothing.\n\nAdd support to allow replacing individual arguments as well.\n\nSigned-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>\nReviewed-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>\n---\n tools/lib/python/kdoc/kdoc_re.py | 84 ++++++++++++++++++++++----------\n 1 file changed, 59 insertions(+), 25 deletions(-)",
    "diff": "diff --git a/tools/lib/python/kdoc/kdoc_re.py b/tools/lib/python/kdoc/kdoc_re.py\nindex fed9894a5c71..05f36d665b70 100644\n--- a/tools/lib/python/kdoc/kdoc_re.py\n+++ b/tools/lib/python/kdoc/kdoc_re.py\n@@ -177,29 +177,6 @@ class NestedMatch:\n     will ignore the search string.\n     \"\"\"\n \n-    # TODO: make NestedMatch handle multiple match groups\n-    #\n-    # Right now, regular expressions to match it are defined only up to\n-    #       the start delimiter, e.g.:\n-    #\n-    #       \\bSTRUCT_GROUP\\(\n-    #\n-    # is similar to: STRUCT_GROUP\\((.*)\\)\n-    # except that the content inside the match group is delimiter-aligned.\n-    #\n-    # The content inside parentheses is converted into a single replace\n-    # group (e.g. r`\\1').\n-    #\n-    # It would be nice to change such definition to support multiple\n-    # match groups, allowing a regex equivalent to:\n-    #\n-    #   FOO\\((.*), (.*), (.*)\\)\n-    #\n-    # it is probably easier to define it not as a regular expression, but\n-    # with some lexical definition like:\n-    #\n-    #   FOO(arg1, arg2, arg3)\n-\n     def __init__(self, regex):\n         self.regex = KernRe(regex)\n \n@@ -285,6 +262,59 @@ class NestedMatch:\n \n             yield line[t[0]:t[2]]\n \n+    @staticmethod\n+    def _split_args(all_args, delim=\",\"):\n+        \"\"\"\n+        Helper method to split comma-separated function arguments\n+        or struct elements, if delim is set to \";\".\n+\n+        It returns a list of arguments that can be used later on by\n+        the sub() method.\n+        \"\"\"\n+        args = [all_args]\n+        stack = []\n+        arg_start = 0\n+        string_char = None\n+        escape = False\n+\n+        for idx, d in enumerate(all_args):\n+            if escape:\n+                escape = False\n+                continue\n+\n+            if string_char:\n+                if d == '\\\\':\n+                    escape = True\n+                elif d == string_char:\n+                    string_char = None\n+\n+                continue\n+\n+            if d in ('\"', \"'\"):\n+                string_char = d\n+                continue\n+\n+            if d in DELIMITER_PAIRS:\n+                end = DELIMITER_PAIRS[d]\n+\n+                stack.append(end)\n+                continue\n+\n+            if stack and d == stack[-1]:\n+                stack.pop()\n+                continue\n+\n+            if d == delim and not stack:\n+                args.append(all_args[arg_start:idx].strip())\n+                arg_start = idx + 1\n+\n+        # Add the last argument (if any)\n+        last = all_args[arg_start:].strip()\n+        if last:\n+            args.append(last)\n+\n+        return args\n+\n     def sub(self, sub, line, count=0):\n         \"\"\"\n         This is similar to re.sub:\n@@ -313,9 +343,13 @@ class NestedMatch:\n             # Value, ignoring start/end delimiters\n             value = line[end:pos - 1]\n \n-            # replaces \\0 at the sub string, if \\0 is used there\n+            # replace arguments\n             new_sub = sub\n-            new_sub = new_sub.replace(r'\\0', value)\n+            if \"\\\\\" in sub:\n+                args = self._split_args(value)\n+\n+                new_sub = re.sub(r'\\\\(\\d+)',\n+                                 lambda m: args[int(m.group(1))], new_sub)\n \n             out += new_sub\n \n",
    "prefixes": [
        "20/38"
    ]
}