Hi,
> Try again, for firefox-esr (and with a ~/.XCompose file that is not > befouled with nonbreaking spaces). > > But make one change to the procedure. When you launch firefox-esr, do > so like this: > > $ env GTK_IM_MODULE=xim firefox-esr > > Let us know how that goes. I made a fresh install of Debian on an old 32 bit netbook. Before I did anything to the fresh install, I wrote just one line to the .XCompose file: <W> : "a long substitution" Using Kite, I tried typing W while holding down the shift key. I got just the letter "a". I tried to start firefox using the command above. Fire fox gave the error (firefox-esr:1554): Gtk-WARNING **: 15:05:11:541 : GTK+ suports to output one char only: "a long substitution": <W> : "a long substitution" The error was repeated 8 times (with different timetsamps) before the firefox window came up. When I tried to type W, either the W remained as such or the field showed a list of string starting with W. What next steps do you suggest for me? Should I submit a bug report? Where? Thanks, ajith