Ttgjyuk

I'm trying to type up some Navajo text in Ubuntu 18.10. This language has several non-English characters, the consonant ł and the nasal vowels ą, ę, į, ǫ. These are fairly easy to input by typing <Compose> <comma> <a> or whatever, or <Compose> <slash> <l> for the ł character. However, the language also has high and low tones. So there are four Navajo characters that I don't see an easy way to input with the default en_US.UTF8 Compose locale, which are these:

• ą́


• ę́


• į́


• ǫ́

In Unicode terms, these are LATIN SMALL LETTER [AEIO] WITH OGONEK, plus a COMBINING ACUTE ACCENT. Ideally, I'd like to type something like <Compose> <apostrophe> <comma> <a> to get ą́. Right now, I've added the following to my .XCompose file:

include "%L"

<Multi_key> <apostrophe> <apostrophe> : "́" U0301

And this enables me to type <Compose> <comma> <a> <Compose> <apostrophe> <apostrophe> to get ą́, that's a fair amount of work when sequences like į́į́ are not uncommon. I have tried a couple different entries in ~/.XCompose that don't seem to work, and I'm not sure why:

<Multi_key> <n> <a> : "ą́"

I also tried this:

<Multi_key> <apostrophe> <comma> <a> : "ą́"

And this:

<dead_cedilla> <dead_acute> <a> : "ą́"

Halfway through I got frustrated and installed ibus-table-compose; this doesn't seem to have had any effect either. I have the following installed:

gir1.2-ibus-1.0/cosmic,now 1.5.19-1ubuntu1 amd64 [installed]
ibus-gtk3/cosmic,now 1.5.19-1ubuntu1 amd64 [installed]
ibus-gtk/cosmic,now 1.5.19-1ubuntu1 amd64 [installed]
ibus-table-compose/cosmic,cosmic,now 1.3.9-2 all [installed]
ibus-table/cosmic,cosmic,now 1.9.21-1 all [installed]
ibus/cosmic,now 1.5.19-1ubuntu1 amd64 [installed]
libibus-1.0-5/cosmic,now 1.5.19-1ubuntu1 amd64 [installed]

Any advice would be greatly appreciated!