char.mangled
A file read as Latin-1 or cp1252 and written back as UTF-8: the accented letter that went in comes out as two, and every reader after copies the pair forward. Usually a paste out of a terminal, an editor with the wrong default, or a script that opened the file without naming an encoding.
What it means
Section titled “What it means”A run of bytes that were UTF-8 read through another codec, so the field carries characters nobody chose. Retype the field; an example of the mangling belongs in the design section, which is prose this rule does not read.
Two or more doors are open and which one is right is a judgement about the work.
What closes it
Section titled “What closes it”roadkeep restate … --symptom … --typo— where the symptom is what arrived wrongroadkeep amend … --why …— where the why is