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Add support for opening an existing PTY

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Virtual machine monitor programs (e.g. QEMU, Cloud Hypervisor) expose
guest consoles as PTYs.  With this patch, foot can access these guest
consoles.

Usually, the program used for accessing these PTYs is screen, but
screen is barely developed, doesn't support resizing, and has a bunch
of other unrelated stuff going on.  It would be nice to have a
terminal emulator that properly supported opening an existing PTY.
The VMM controls the master end of the PTY, so to the other end (in
this case foot), it just behaves like any application running in a
directly-opened PTY, and all that's needed is to change foot's code to
support opening an existing PTY rather than creating one.

Co-authored-by: tanto <tanto@ccc.ac>
This commit is contained in:
Alyssa Ross 2021-12-10 17:40:59 +00:00 • committed by Daniel Eklöf
parent 712bc95db3
commit 86894a1cd2
No known key found for this signature in database
GPG key ID: 5BBD4992C116573F
9 changed files with 76 additions and 32 deletions
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5
completions/bash/foot
View file

@ -19,6 +19,7 @@ _foot()
"--maximized"
"--override"
"--print-pid"
"--pty"
"--server"
"--term"
"--title"
@ -39,7 +40,7 @@ _foot()
for word in "${previous_words[@]}" ; do
match=$(printf "$commands" | grep -Fx "$word" 2>/dev/null)
if [[ ! -z "$match" ]] ; then
if [[ ${COMP_WORDS[i-1]} =~ ^(--app-id|--config|--font|--log-level|--term|--title|--window-size-pixels|--window-size-chars|--working-directory)$ ]] ; then
if [[ ${COMP_WORDS[i-1]} =~ ^(--app-id|--config|--font|--log-level|--pty|--term|--title|--window-size-pixels|--window-size-chars|--working-directory)$ ]] ; then
(( i++ ))
continue
fi
@ -74,7 +75,7 @@ _foot()
COMPREPLY=( $(compgen -W "none error warning info" -- ${cur}) ) ;;
--log-colorize|-l)
COMPREPLY=( $(compgen -W "never always auto" -- ${cur}) ) ;;
--app-id|--help|--override|--title|--version|--window-size-chars|--window-size-pixels|--check-config|-[ahoTvWwC])
--app-id|--help|--override|--pty|--title|--version|--window-size-chars|--window-size-pixels|--check-config|-[ahoTvWwC])
# Don't autocomplete for these flags
: ;;
*)

1
completions/fish/foot.fish
View file

@ -18,5 +18,6 @@ complete -c foot -r -s p -l print-pid
complete -c foot -x -s d -l log-level -a "info warning error none" -d "log-level (warning)"
complete -c foot -x -s l -l log-colorize -a "always never auto" -d "enable or disable colorization of log output on stderr"
complete -c foot -s S -l log-no-syslog -d "disable syslog logging (server mode only)"
complete -c foot -x -l pty -a '(__fish_complete_path)' -d "display an existing pty instead of creating one"
complete -c foot -s v -l version -d "show the version number and quit"
complete -c foot -s h -l help -d "show help message and quit"

1
completions/zsh/_foot
View file

@ -18,6 +18,7 @@ _arguments \
'(-s --server)'{-s,--server}'[run as server; open terminals by running footclient]:server:_files' \
'(-H --hold)'{-H,--hold}'[remain open after child process exits]' \
'(-p --print-pid)'{-p,--print-pid}'[print PID to this file or FD when up and running (server mode only)]:pidfile:_files' \
'--pty=[display an existing pty instead of creating one]:pty:_files' \
'(-d --log-level)'{-d,--log-level}'[log level (warning)]:loglevel:(info warning error none)' \
'(-l --log-colorize)'{-l,--log-colorize}'[enable or disable colorization of log output on stderr]:logcolor:(never always auto)' \
'(-S --log-no-syslog)'{-s,--log-no-syslog}'[disable syslog logging (server mode only)]' \