tree f1aeaa1333a3a6f3de7deb5fd2810be7de17c1c6
parent 86742d4ce8d6c301104e238699b30f6bdaf9f9cb
author Miss Islington (bot) <31488909+miss-islington@users.noreply.github.com> 1563300516 -0700
committer GitHub <noreply@github.com> 1563300516 -0700
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Fix infinite loop in email folding logic (GH-12732)


As far as I can tell, this infinite loop would be triggered if:

1. The value being folded contains a single word (no spaces) longer than
   max_line_length
2. The max_line_length is shorter than the encoding's name + 9
   characters.

bpo-36564: https://bugs.python.org/issue36564
(cherry picked from commit f69d5c61981ea97d251db515c7ff280fcc17182d)

Co-authored-by: Paul Ganssle <pganssle@users.noreply.github.com>