Do not strvis output to terminal from commands.

Process escape sequences in show-buffer, GitHub issue 3401.

Add args parsing callback for some future work, currently unused.

Hide struct args behind a couple of accessor functions.

O_TRUNC is needed in case file exists.

Fix show-buffer when run from inside tmux, GitHub issue 2314.

Make client -c and -t handling common in cmd-queue.c and try to be
clearer about whether the client is the target client (must have a
session) or not.

Also move cmdq_item and cmdq_list into cmd-queue.c (this is to make its
use more clearly defined and preparation for some future work).

Make struct cmd local to cmd.c and move it out of tmux.h.

Rewrite the code for reading and writing files. Now, if the client is
not attached, the server process asks it to open the file, similar to
how works for stdin, stdout, stderr. This makes special fil

Rewrite the code for reading and writing files. Now, if the client is
not attached, the server process asks it to open the file, similar to
how works for stdin, stdout, stderr. This makes special files like
/dev/fd/X work (used by some shells). stdin, stdout and stderr and
control mode are now just special cases of the same mechanism. This will
also make it easier to use for other commands that read files such as
source-file.

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Use the right client when working out where to save or load the buffer,
reported by kn@.

Do not leak path or use it after free.

Expand formats in load-buffer and save-buffer.

Memory leaks, from David CARLIER.

Make source-file look for files relative to the client working directory
(like load-buffer and save-buffer), from Chris Pickel. Also break the
where-is-this-file code out into its own function for lo

Make source-file look for files relative to the client working directory
(like load-buffer and save-buffer), from Chris Pickel. Also break the
where-is-this-file code out into its own function for loadb and saveb.

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Nits found with clang.

Mass rename struct cmd_q to struct cmdq_item and related.

Add CMD_AFTERHOOK flag to the easy commands that don't need any special handling.

Add static in cmd-* and fix a few other nits.

Do not use c->cwd or s->cwd if it is NULL, found by Ben Boeckel.

Use member names in cmd_entry definitions so I stop getting confused
about the order.

Instead of every command resolving the target (-t or -s) itself, prepare
the state (client, session, winlink, pane) for it it before entering the
command. Each command provides some flags that tell t

Instead of every command resolving the target (-t or -s) itself, prepare
the state (client, session, winlink, pane) for it it before entering the
command. Each command provides some flags that tell the prepare step
what it is expecting.

This is a requirement for having hooks on commands (for example, if you
hook "select-window -t1:2", the hook command should to operate on window
1:2 not whatever it thinks is the current window), and should allow some
other target improvements.

The old cmd_find_* functions remain for the moment but that layer will
be dropped later.

Joint work with Thomas Adam.

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Push stdout and stderr to clients more aggressively, and add an event to
continue if the send fails.

If realpath() fails just try the original path.

Handle absolute paths properly, and don't use resolved path in
realpath() fails.