bug#37051: 26.2.90; feature request: C-x 8 <SYMBOL> Prefix Command for letter with macron

[Robert Pluim]

>>>>> On Sat, 17 Aug 2019 00:13:58 +1000, VanL <van@scratch.space> said:

    VanL> Hello,
    VanL> There doesn't seem to be a Prefix Command for placing a macron over a 
small letter 'a'. [1]

    VanL> Like typing `C-x 8 ^ a â' to place a circumflex over a small letter a,
    VanL> I'd like to be able to type the 'a' and 'i' with macron in 'Cháng
    VanL> Xiāng Sī (Everlasting Longing) by Bai Juyi'.

Would you consider using the chinese-sisheng input method? That has
mappings for all of those. In fact, digging some more, thereʼs the
hawaiian-prefix method as well, which has far fewer mappings, so
shouldn't interfere too much with normal typing.

Otherwise it could be added to the C-x 8 map, but Iʼm having a hard
time finding a prefix thatʼs both free and reasonably mnemonic for
MACRON, unless we want to turn 'C-x 8 =' into a prefix map, with
'C-x 8 = =' meaning 'insert MACRON'.

Robert