[embedthumbnail] Correctly escape filename

Closes #352
The approach in [1] is faulty as can be seen in the test cases
1. https://github.com/ytdl-org/youtube-dl/commit/bff857a8af696e701482208617bf0b7564951326
This commit is contained in:
pukkandan
2021-05-29 01:39:07 +05:30
parent 885cc0b75c
commit 337e0c62f8
5 changed files with 75 additions and 56 deletions
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