How do you input Pinyin tone marks in X11 from the keyboard?

[mr tin]

I'm running Arch Linux on a MacBook, and I miss the functionality I had on Mac OS X with the "US Extended" keyboard layout where I could type option (alt) + a, e, v, or ` for first (macron), second (acute accent), third (breve), or fourth (grave accent) tone, respectively. I use SCIM for ??, but it doesn't appear to support inputting actual Pinyin. I don't think imron's Pinyin IME runs on Linux, and even if it did, I'd prefer being able to type the diacritic marks without changing IMEs. In my xorg.conf I set my right command/apple key to be the Multi_key/compose key for /usr/share/X11/locale/en_US.UTF-8/Compose but only second tone, fourth tone, and first tone for e, i, and u works. + _ + a and + _ + o don't give macrons for some reason, I can't insert breves, and I have no clue how to insert ü with a tone mark. My XkbLayout is set to "us". Has anyone had better success with us_intl? Although the Gentoo Wiki (http://www.gentoo.ro/proj/en/desktop...tyle=printable) seems to suggest that us_intl is deprecated and that one should use the line "XkbOptions" "lv3:ralt_switch" in their xorg.conf instead. Has anyone gotten Pinyin tone marks to work in Linux? I don't use a desktop environment (ratpoison all the way :mrgreen: ), so please don't tell me anything specific to GNOME or KDE. Thanks in advance.