doc/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@linux.ibm.com> Message-ID: <20230912060801.95533-3-bgray@linux.ibm.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Adapted for U-Boot Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
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Heinrich Schuchardt

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@@ -147,7 +147,7 @@ class KernelCmd(Directive):
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code_block += "\n " + l
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lines = code_block + "\n\n"
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line_regex = re.compile("^#define LINENO (\S+)\#([0-9]+)$")
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line_regex = re.compile(r"^#define LINENO (\S+)\#([0-9]+)$")
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ln = 0
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n = 0
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f = fname
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