TZUTC: -0800
MSGID: 54257.syncprog@1:103/705 2dde35cb
PID: Synchronet 3.21b-Linux master/5c73d262c Jan 21 2026 GCC 12.2.0
TID: SBBSecho 3.35-Linux master/0958ba161 Jan 25 2026 GCC 12.2.0
BBSID: VERT
CHRS: ASCII 1
FORMAT: flowed
https://gitlab.synchro.net/main/sbbs/-/commit/c5d806d626b4aaa5afee53b1
Modified Files:
	src/sbbs3/ansi_terminal.cpp js_console.cpp terminal.h
Log Message:
Add a cursor position optimizer to the ANSI_Terminal class

(disabled by default, Deuce is pretty sure it'll break somethings)

The performance of some scripts (e.g. utopia.js) benefit from the filtering of
redundant cursor position changes and though we can (with v3.21) check the
console current_row/column properties in the script to avoid sending redundant
changes to cursor position, that is not backwards compatible with Synchronet
v3.20 since its console.gotoxy() method did *not* update the internal concept
of where the cursor position is currently. So any optimization in the script
itself would have to either:

a) be Synchronet-version specific or risk incorrectly filtering out cursor
position changes that were not actually redundant, or

b) track the cursor position itself after every call to console.putmsg, write,
print, etc.

I figured this simple optimization could be available to any script, if it
wanted it, but the script should be sure to set the setting back (e.g. by using
js.on_exit) to the value it had when the script was started.

The new JS 'console' property (and Terminal class member) is: optimize_gotoxy
(defaults to false/off).
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