From 5bb003ed37ac97ad12c12a2bce78cf0501666c41 Mon Sep 17 00:00:00 2001
From: Euclid Ye
For field names and filenames for file fields, the result of the encoding in the +
For all field names, as well as filenames for file fields, the result of the encoding in the
previous bullet point must be escaped by replacing any 0x0A (LF) bytes with the byte sequence
`%0A`, 0x0D (CR) with `%0D` and 0x22 (") with
`%22`. The user agent must not perform any other escapes.