TZUTC: -0800
MSGID: 53798.syncprog@1:103/705 2db2c9b4
PID: Synchronet 3.21a-Linux master/48922a15c Dec 17 2025 GCC 12.2.0
TID: SBBSecho 3.33-Linux master/3fa76ba1d Dec 21 2025 GCC 12.2.0
BBSID: VERT
CHRS: ASCII 1
FORMAT: flowed
https://gitlab.synchro.net/main/sbbs/-/merge_requests/590#note_7990

But strip_ctrl() also removes Ctrl-A characters.  I don't want to remove any
Synchronet attribute/color codes in case a file description has any.
--- SBBSecho 3.33-Linux
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