202285 - Combining characters should make spaces not be spaces anymore

Status: NEW

(Core :: Layout: Text and Fonts, defect)

Description

[Hixie (not reading bugmail)]

A space merged with combining character is still treated as a space for the
purposes of whitespace collapsing and so forth.

For example:

   <p> &#x302;</p>

...is considered empty (the space collapses with the start of the line, leaving
nothing), and:

   <p>o  &#x302;  &#x302;</p>

...results in some of the spaces collapsing together (so the result is "o^^").

Our behaviour makes no sense -- either the characters are spaces, in which case
the combining character should disappear too, or they are not, in which case
they should be separatable with spaces.

Comment 1

[Jungshik Shin]

see also bug 229896. one way to solve this bug is to do space-collapsing after
grapheme-cluster-breaking.