Fixes #1958

Also replace GDK_space with ASCII space, its searching for that, not the keycode (which just happens to have the same value, lucky). You can view, comment on, or merge this pull request online at:

https://github.com/geany/geany/pull/1960

-- Commit Summary --

* Fix line breaking with multibyte characters

-- File Changes --

M src/editor.c (4)

-- Patch Links --

https://github.com/geany/geany/pull/1960.patch https://github.com/geany/geany/pull/1960.diff