[Midnight Commander] #4458: Support clipboard via OSC 52
Ticket System
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Reporter: yurikhan | Type: enhancement
Status: new | Priority: major
Milestone: Future Releases | Component: mc-core
Version: master | Keywords:
Blocked By: | Blocking:
Branch state: no branch | Votes for changeset:
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Many terminal emulators, starting with Xterm, conditionally allow access
to the system clipboard via an escape sequence. In comparison with
`xclip`-based solution (#30), this works transparently when you `ssh`
around, without X11 forwarding and without having to install `xclip` on
each server you manage.
To write to the clipboard, an application sends `ESC ] 5 2 ; c ; <content>
ESC \`, where ''<content>'' is base64-encoded. (`BEL` can also be used as
terminator.)
To read the clipboard, an application sends `ESC ] 5 2 ; c ; ? ESC \`. A
conforming terminal will respond by sending `ESC ] 5 2 ; c ; <content> ESC
\`, again, with ''<content>'' base64-encoded. (If the request uses `BEL`
instead of `ESC \`, the terminal’s response will typically also be
terminated with `BEL`.)
A non-supporting but ANSI-conforming terminal will ignore the unsupported
OSC sequence until the `ESC \` or `BEL` terminator.
I do not think there is a termcap/terminfo capability advertising support,
so it would probably have to be a user option. Alternatively, `mc` could
unconditionally put copied content into both
`~/.local/share/mc/mcedit/mcedit.clip` and send the OSC sequence; when
pasting, first send the request, and if no response within a few
milliseconds, fall back to reading `~/.local/share/mc/mcedit/mcedit.clip`.
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Ticket URL: <http://www.midnight-commander.org/ticket/4458>
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Ticket System
Reporter: yurikhan | Owner:
Type: enhancement | Status: new
Priority: major | Milestone: Future Releases
Component: mc-core | Version: master
Blocked By: | Blocking:
Branch state: no branch | Votes for changeset:
Comment (by zaytsev):
Wow, this would be cool! What do you think andrew_b? I wonder what's the
current state of the terminal support for this feature...
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Ticket URL: <http://www.midnight-commander.org/ticket/4458#comment:1>
Ticket System
Reporter: yurikhan | Owner:
Type: enhancement | Status: new
Priority: major | Milestone: Future Releases
Component: mc-core | Version: master
Blocked By: | Blocking:
Branch state: no branch | Votes for changeset:
Comment (by yurikhan):
I must admit my “Many terminal emulators” assessment is skewed towards
emulators aimed at power users. Xterm (opt-in via config), Kitty (opt-in
via config), Alacritty, iTerm2 (warns); tmux (opt-in via config). Support
in libvte and KDE’s implementation seems to be stuck on the security
issues; basically, “a compromised ssh server could steal passwords by
polling your clipboard” and “a compromised ssh server could put a
malicious command into your clipboard which you might then execute locally
or on a different server”.
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Ticket URL: <http://www.midnight-commander.org/ticket/4458#comment:2>