Don't show SSH connection sharing options mid-session (they don't work).


git-svn-id: svn://svn.tartarus.org/sgt@10228 cda61777-01e9-0310-a592-d414129be87e
Update command-line help and man pages for -hostkey.


git-svn-id: svn://svn.tartarus.org/sgt@10229 cda61777-01e9-0310-a592-d414129be87e
Move -sercfg out of the "SSH only" section of command-line help.


git-svn-id: svn://svn.tartarus.org/sgt@10230 cda61777-01e9-0310-a592-d414129be87e
Update transcripts for recent command-line help changes.


git-svn-id: svn://svn.tartarus.org/sgt@10231 cda61777-01e9-0310-a592-d414129be87e
Add some index terms for host key overrides.


git-svn-id: svn://svn.tartarus.org/sgt@10232 cda61777-01e9-0310-a592-d414129be87e
Repair GTK timer handling

The bug eventually makes PuTTY take 100% of a CPU.

1) This patch stops run_timers returning with a next timer interval
of zero ms.

2) The code called from run_timers is likely to create a new timer
when it runs before timer_trigger adds the next timer that run_timers
returns. This would mean that two timers get scheduled with gtk.

3) Make sure terminal.c doesn't waste CPU doing the text blink timer
when we don't have focus. Naturally the text blink and a blinking
cursor will resync when we regain focus.

NB: Windows calls 'term_set_focus' a lot .. Yes you still have focus
Revert almost duplicate change.

Something that's almost as good as this is now in SGT's base code.
Fix WM_NETEVENT delayed processing.

Now the function run_toplevel_callbacks() is only called when there
are no pending messages in the Windows queue. This is how it was
designed to work.
Pango font performance update

This change improves the speed of the best case pango font
processing.  It removes multiple calls to pango_layout_set_text and
pango_layout_get_pixel_extents that were used to check that every prefix
string of a given draw_text is actually the correct size.

Instead the function now checks just once before painting the text
that the size of the whole region is correct. If it's not correct it
falls back to painting one character at a time immediatly rather than
optimistically trying lots of substrings; this normally improves the
draw time of complex screens and proportional fonts too.

If there are compensating layout issues within the string they won't
cause problems because terminal.c already has code to redraw any row
of text that was drawn as one operation if it's split.
Minimise, maximise, etc are as annoying as other terminal resize operations.

Note they ARE resize operations so treat them as such and disable them
if requested.
Add XTerm extensions for VTTEST and reverse BS

Codes to enable and disable the DECCOLM 132/80 column switching DEC
control and XTerm's reverse BS hack to 'pass' the vttest option 1.

This means that PuTTY uses the same modal hack as XTerm to pass the vttest
'end of line' test, (Actually the reverse part) and Thomas can stop lying
about PuTTY in the xterm FAQ.  The second part prevents the default xterm
'init' sequence from terminfo clearing the screen.

In addition most applications realise that terminal resizes are requests
and that you likely won't get what you ask for.  Programs (like vttest)
that use the sequence DECCOLM aren't so smart so the change is immediatly
enacted.
Adjust DEC-MCS character set.

U+2426 "␦" is defined as the substitution character in DEC-MCS

Note: dec_mcs is a 94 character set so 0xA0 and 0xFF are not defined in
a different way when it's mapped into GR.
Optimisation to delete windows code on unix

Changed is_dbcs_leadbyte to a macro on unix so the compiler knows
it's always zero.
This is a fix for the direct to font DBCS cursor.

If we're sitting on a DBCS lead byte it extends the cursor to two
characters rather then just one.
Windows codepages do not have C1 controls
Fix the scoasc translation on unix

There should be a set of VGA ROM characters in the first 32 positions
of the character set to match with Linux, scoansi and Windows PuTTY.
Function x11font_draw_text uses the UCS2 character set
SCO Ansi Keyboard correction
Correct Window title character set on windows.

The characters are converted to unicode before use.
Changes to the internal usage of unicode areas for character set conversion.

The unix port is using the U+D800 range for the same jobs as the windows
port uses the U+F100 range. Set it to use the same range of characters.

Note: unlike windows this is ONLY used if the font doesn't have a
recognised character set so this change doesn't make the DTF range
compatible with the Linux console.

In a similar issue terminal.c is using the CSET_* codes for two different
tasks; the screen map characters and the line characters. Making the
distinction explicit should clarify things.

We now have a 32bit space for the characters so the hack of placing
the CSET_* code overlapping the surrogates is no longer required. We
can instead place them past the end of the valid unicode characters
(ie U+180000). Note I've chosen 0x180000 rather than 0x200000 to preserve
the compression of the scrollback.

Unfortunatly I can't do the same for the DTF range as it wouldn't work
for the UTF-16 platform. I can, however, move it to the "Low Surrogates"
area where it shouldn't interfere with the normal use of surrogates.

Added Linux DTF range (U+F000 -> CP437) explicitly into the emulation
because we no longer have the "happy coincidence" of the OEMCP being
mapped to U+F000. This means it could now be disabled for pure utf8 mode.