Yes, every xterm-compatible should have them. You just send the particular query (e.g. ‘CSI 14 t’) and the terminal sends back a response in the defined form¹.

Yes, every xterm-compatible should have them. You just send the particular query (e.g. ‘CSI 14 t’) and the terminal sends back a response in the defined form¹. Of course you'll want raw mode, echo off, etc. Normally a library like curses does this for you. If you want to see, https://gist.github.com/kpschoedel/6a87ec2157ce2140be69193d18e14e3e https://gist.github.com/kpschoedel/6a87ec2157ce2140be69193d1... (I just whipped this up to answer the question; don't expect production quality) ¹ https://invisible-island.net/xterm/ctlseqs/ctlseqs.html#h3-Functions-using-CSI-_-ordered-by-the-final-character_s_ https://invisible-island.net/xterm/ctlseqs/ctlseqs.html#h3-F...