How to type "ç" when using USA intl as the keyboard layout?
Edit /usr/lib/gtk-2.0/2.10.0/gtk.immodules
Modify the line where you can find "cedilla" add ":en" at the end
"cedilla" "Cedilla" "gtk20" "/usr/share/locale" "az:ca:co:fr:gv:oc:pt:sq:tr:wa:en"
Edit /etc/environment
Add: export GTK_IM_MODULE=cedilla
Edit for Ubuntu 12.10: (according to the other answer by Hoerlle)
the gtk.immodule file is located at:
/usr/lib/x86_64-linux-gnu/gtk-2.0/2.10.0/gtk.immodules
or
/usr/lib/i386-linux-gnu/gtk-2.0/2.10.0/gtk.immodules
For KDE and other applications that are not GTK:
Edit: /usr/share/X11/locale/en_US.UTF-8/Compose
Find all ocorrencies for ć and replace it all for ç, remember to look for the the uppercase matches too Ć and Ç
You may need to restart your gnome.
In Ubuntu 13.10, I fixed it by adding the following lines in /etc/environment:
GTK_IM_MODULE=cedilla
QT_IM_MODULE=cedilla
Try using the Dvorak International layout with dead keys;there's a good possibility that QWERT International with dead keys also uses these keys. On mine, the comma is a live key. (It's used often enough that it would be annoying if it were a dead key.)
For a ç. try AltGr (right Alt) + ,. For a capital, Ç, try Shift+AltGr+,.