Re: Bug: Ligatures are removed as one character

[Chet Ramey]

On 2/19/24 9:26 PM, Avid Seeker wrote:
> When pressing backspace on Arabic ligatures (including characters with
> diacritics), they are removed as if they are one character.

As you might guess, readline doesn't know much about Arabic, per se. In a
UTF-8 locale, for example, it knows base characters and combining
characters.

The idea is simple: when moving backwards, move one multibyte character at
a time, ignoring combining characters, until you get to a character for
which wcwidth(x) > 0, and move point there. The algorithm for moving
forward is similar.

How should this be modified to support Arabic in a portable way?

--
``The lyf so short, the craft so long to lerne.'' - Chaucer
                 ``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, UTech, CWRU    chet@case.edu    http://tiswww.cwru.edu/~chet/

OpenPGP_signature.asc
Description: OpenPGP digital signature