[code-quality] Problems in pylint.1

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--
                             Eric S. Raymond
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Problems with pylint.1:

Ambiguous or invalid backslash.  This doesn't cause groff a problem.
but it confuses doclifter and may confuse older troff implementations.

--- pylint.1-unpatched	2018-05-18 08:21:03.576466143 -0400
+++ pylint.1	2018-05-18 08:21:03.392467392 -0400
@@ -231,7 +231,7 @@
 .IP "--max-line-length=<int>"
 Maximum number of characters on a single line. [current: 100]
 .IP "--ignore-long-lines=<regexp>"
-Regexp for a line that is allowed to be longer than the limit. [current: ^\s*(# )?<?https?://\S+>?$]
+Regexp for a line that is allowed to be longer than the limit. [current: ^\es*(# )?<?https?://\eS+>?$]
 .IP "--single-line-if-stmt=<y_or_n>"
 Allow the body of an if to be on the same line as the test if there is no else. [current: no]
 .IP "--no-space-check=NO_SPACE_CHECK"