Style and spacing nits.

Expand formats in option names and add -F flag to do so in option values as well.

Get rid of the extra layer of flags and cmd_prepare() and just store the
CMD_FIND_* flags in the cmd_entry and call it for the command. Commands
with special requirements call it themselves and updat

Get rid of the extra layer of flags and cmd_prepare() and just store the
CMD_FIND_* flags in the cmd_entry and call it for the command. Commands
with special requirements call it themselves and update the target for
hooks to use.

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Memory leaks, from David CARLIER.

Style nits.

Cache status line position to reduce option lookups during output.

Clear option before adding to array if no -a, reported by Michael
Nickerson.

Fix set -u on array options.

If given an array option without an index either show or set all items,
and support -a for array options. Allow the separator for set to be
specified in the options table (will be used for backwards

If given an array option without an index either show or set all items,
and support -a for array options. Allow the separator for set to be
specified in the options table (will be used for backwards compatibility
later).

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getopt() has a struct option so just return to using options_entry.

-q flag now needs to be checked in a couple more places.

Major tidy up and rework of options tree and set-option/show-options
commands this pushes more of the code into options.c and ties it more
closely to the options table rather than having an unnecessa

Major tidy up and rework of options tree and set-option/show-options
commands this pushes more of the code into options.c and ties it more
closely to the options table rather than having an unnecessary
split. Also add support for array options (will be used later). Only
(intentional) user visible change is that show-options output is now
passed through vis(3) with VIS_DQ so quotes are escaped.

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Simplify appending to string options.

Some tidying and tweaks to options code.

Do not try to set the CHANGED flag on windows with no active pane, fixes
problem reported by Nelo-T Wallus.

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.

Handle NULL window or session for user options.

Support set -a (append) with user options, suggested by Xandor Schiefer.

Cache the window styles and do not look up the window-style options
unless they have changed.

Add option to include status text in the pane borders. If
pane-border-status is set to "top" or "bottom" (rather than "off"),
every pane has a permanent top or bottom border containing the text from

Add option to include status text in the pane borders. If
pane-border-status is set to "top" or "bottom" (rather than "off"),
every pane has a permanent top or bottom border containing the text from
pane-border-format.

Based on a diff sent long ago by Jonathan Slenders, mostly rewritten and
simplified by me.

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show-* and set-* need to handle a missing target.

I no longer use my SourceForge address so replace it.

Instead of combined flags for -c, -s, -t, split into different sets
using an enum and simplify the parsing code.