linux-kernel - [PATCH 2/8] Documentation/sphinx: fix Python string escapes

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Date:   Mon, 14 Aug 2023 16:06:58 +1000
From:   Benjamin Gray <bgray@...ux.ibm.com>
To:     linux-kernel@...r.kernel.org, linux-ia64@...r.kernel.org,
        linux-doc@...r.kernel.org, bpf@...r.kernel.org,
        linux-pm@...r.kernel.org
Cc:     abbotti@....co.uk, hsweeten@...ionengravers.com,
        jan.kiszka@...mens.com, kbingham@...nel.org, mykolal@...com,
        Benjamin Gray <bgray@...ux.ibm.com>
Subject: [PATCH 2/8] Documentation/sphinx: fix Python string escapes

Python 3.6 introduced a DeprecationWarning for invalid escape sequences.
This is upgraded to a SyntaxWarning in Python 3.12, and will eventually
be a syntax error.

Fix these now to get ahead of it before it's an error.

Signed-off-by: Benjamin Gray <bgray@...ux.ibm.com>
---
 Documentation/sphinx/cdomain.py             | 2 +-
 Documentation/sphinx/kernel_abi.py          | 2 +-
 Documentation/sphinx/kernel_feat.py         | 2 +-
 Documentation/sphinx/kerneldoc.py           | 2 +-
 Documentation/sphinx/maintainers_include.py | 8 ++++----
 5 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/Documentation/sphinx/cdomain.py b/Documentation/sphinx/cdomain.py
index ca8ac9e59ded..dbdc74bd0772 100644
--- a/Documentation/sphinx/cdomain.py
+++ b/Documentation/sphinx/cdomain.py
@@ -93,7 +93,7 @@ def markup_ctype_refs(match):
 #
 RE_expr = re.compile(r':c:(expr|texpr):`([^\`]+)`')
 def markup_c_expr(match):
-    return '\ ``' + match.group(2) + '``\ '
+    return '\\ ``' + match.group(2) + '``\\ '
 
 #
 # Parse Sphinx 3.x C markups, replacing them by backward-compatible ones
diff --git a/Documentation/sphinx/kernel_abi.py b/Documentation/sphinx/kernel_abi.py
index b5feb5b1d905..b9f026f016fd 100644
--- a/Documentation/sphinx/kernel_abi.py
+++ b/Documentation/sphinx/kernel_abi.py
@@ -138,7 +138,7 @@ class KernelCmd(Directive):
                 code_block += "\n    " + l
             lines = code_block + "\n\n"
 
-        line_regex = re.compile("^\.\. LINENO (\S+)\#([0-9]+)$")
+        line_regex = re.compile("^\\.\\. LINENO (\\S+)\\#([0-9]+)$")
         ln = 0
         n = 0
         f = fname
diff --git a/Documentation/sphinx/kernel_feat.py b/Documentation/sphinx/kernel_feat.py
index 27b701ed3681..d17adc1a367a 100644
--- a/Documentation/sphinx/kernel_feat.py
+++ b/Documentation/sphinx/kernel_feat.py
@@ -104,7 +104,7 @@ class KernelFeat(Directive):
 
         lines = self.runCmd(cmd, shell=True, cwd=cwd, env=shell_env)
 
-        line_regex = re.compile("^\.\. FILE (\S+)$")
+        line_regex = re.compile("^\\.\\. FILE (\\S+)$")
 
         out_lines = ""
 
diff --git a/Documentation/sphinx/kerneldoc.py b/Documentation/sphinx/kerneldoc.py
index 9395892c7ba3..d6ec34ce2232 100644
--- a/Documentation/sphinx/kerneldoc.py
+++ b/Documentation/sphinx/kerneldoc.py
@@ -130,7 +130,7 @@ class KernelDocDirective(Directive):
             result = ViewList()
 
             lineoffset = 0;
-            line_regex = re.compile("^\.\. LINENO ([0-9]+)$")
+            line_regex = re.compile("^\\.\\. LINENO ([0-9]+)$")
             for line in lines:
                 match = line_regex.search(line)
                 if match:
diff --git a/Documentation/sphinx/maintainers_include.py b/Documentation/sphinx/maintainers_include.py
index 328b3631a585..73be47963153 100755
--- a/Documentation/sphinx/maintainers_include.py
+++ b/Documentation/sphinx/maintainers_include.py
@@ -77,7 +77,7 @@ class MaintainersInclude(Include):
             line = line.rstrip()
 
             # Linkify all non-wildcard refs to ReST files in Documentation/.
-            pat = '(Documentation/([^\s\?\*]*)\.rst)'
+            pat = '(Documentation/([^\\s\\?\\*]*)\\.rst)'
             m = re.search(pat, line)
             if m:
                 # maintainers.rst is in a subdirectory, so include "../".
@@ -90,11 +90,11 @@ class MaintainersInclude(Include):
                 output = "| %s" % (line.replace("\\", "\\\\"))
                 # Look for and record field letter to field name mappings:
                 #   R: Designated *reviewer*: FullName <address@...ain>
-                m = re.search("\s(\S):\s", line)
+                m = re.search("\\s(\\S):\\s", line)
                 if m:
                     field_letter = m.group(1)
                 if field_letter and not field_letter in fields:
-                    m = re.search("\*([^\*]+)\*", line)
+                    m = re.search("\\*([^\\*]+)\\*", line)
                     if m:
                         fields[field_letter] = m.group(1)
             elif subsystems:
@@ -112,7 +112,7 @@ class MaintainersInclude(Include):
                     field_content = ""
 
                     # Collapse whitespace in subsystem name.
-                    heading = re.sub("\s+", " ", line)
+                    heading = re.sub("\\s+", " ", line)
                     output = output + "%s\n%s" % (heading, "~" * len(heading))
                     field_prev = ""
                 else:
-- 
2.41.0