The effect is reached by patching the default system files /usr/share/X11/xkb/symbols/us and /usr/share/X11/xkb/symbols/ru.
Commands:
make show
make view
make us-diff
make ru-diff
make patch
- AltR-Shift-T - combining tilde
- AltR-Shift-B - combining bar (overline)
- AltR-Shift-A - combining right arrow
- AltR-у - combining acute accent
autokey — enter snippets and abbreviations