#3780: Ctrl-Y causes mutt to suspend on OSX
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Reporter: balderdash | Owner: mutt-dev
Type: defect | Status: new
Priority: major | Milestone:
Component: user interface | Version:
Resolution: | Keywords:
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Comment (by dgc):
This is not a mutt issue, it's a terminal property (DSUSP) that is
applicable only on BSD-derived systems such as OSX. GNU glibc manual
documents it thus:
Macro: int VDSUSP
This is the subscript for the DSUSP character in the special control
character array. termios.c_cc[VDSUSP] holds the character itself.
The DSUSP (suspend) character is recognized only if the implementation
supports job control (see Job Control). It sends a SIGTSTP signal, like
the SUSP character, but not right away—only when the program tries to read
it as input. Not all systems with job control support DSUSP; only BSD-
compatible systems (including GNU/Hurd systems).
If you run `stty -a` you'll see ctrl-Y bound to DSUSP. DSUSP sends SIGTSTP
just like SUSP (ctrl-Z) does, but ''only when the program reads the ctrl-Y
as input -- not before''. If you run `cat` at your terminal prompt and
press ctrl-Y and enter, you'll see the same thing. (You have to press
enter because cat line-buffers input. Mutt does not.)
To "fix" this, use stty to rebind DSUSP.
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Ticket URL: <http://dev.mutt.org/trac/ticket/3780#comment:1>
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