xterm's control-right-click menu contains an option named Escape sequence. It is always disabled ("grayed out") in Ubuntu-14.04.

What is this option is used for? How do I enable it?

I am looking for this just in case enabling it enables displaying combined characters.

1 Answer 1


As said by the xterm(1) man page concerning this menu item (see Section VT Fonts), "This allows you to set the font last specified by the Set Font escape sequence (see the document Xterm Control Sequences)". So, until you use such an escape sequence, this menu item is grayed out. Actually it remains grayed out, but this may be a bug. To try:

xterm -xrm '*allowFontOps: true'
printf "\e]50;#+1\a"
  • I tried the above mentioned command, but it didn't work
    – SHW
    Commented Sep 2, 2014 at 8:24
  • 1
    @SHW The printf "\e]50;#+1\a" in the new xterm should increase the font size (it does for me), and should also ungray the Escape Sequence menu item, but as I've said, it remains grayed out. I've reported a bug in the Debian BTS: bugs.debian.org/cgi-bin/bugreport.cgi?bug=760208
    – vinc17
    Commented Sep 2, 2014 at 10:33

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