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doc/scripts: use raw string for regex in gen_state_diagram.py

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Python 3.12 emits SyntaxWarning for invalid escape sequences in ordinary
string literals. The re.search() call on line 162 was the only pattern
in the file passed as a non-raw string, causing:

  doc/scripts/gen_state_diagram.py:162: SyntaxWarning: invalid escape
    sequence '\s'
    i = re.search("return\s+transit<\s*(\w*)\s*>()", line)

Add the r"" prefix to match the other re.search / re.finditer / re.sub
call sites in the same file. No behavior change; \s was already being
interpreted as a regex whitespace class because Python leaves unknown
escapes untouched, but this will become a SyntaxError in a future
Python release.

Signed-off-by: Kefu Chai <k.chai@proxmox.com>
This commit is contained in:
Kefu Chai 2026-04-24 21:34:43 +08:00
parent 5c651b65f2
commit 2178a1aa77
1 changed files with 1 additions and 1 deletions
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doc/scripts/gen_state_diagram.py
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@ -159,7 +159,7 @@ class StateMachineRenderer(object):
if not self.context:
raise Exception("no context at line: " + line)
self.edges[i.group(1)].append((self.context[-1][0], i.group(2)))
i = re.search("return\s+transit<\s*(\w*)\s*>()", line)
i = re.search(r"return\s+transit<\s*(\w*)\s*>()", line)
if i is not None:
if not self.context:
raise Exception("no context at line: " + line)