I've downloaded a SynEdit version from a Chinese website (with lots of improvements), but as the version on Sourceforge it doesn't support true-type fonts (such as Tahoma); it displays them separated with a space.
Anything I can do about this?
SynEdit does not support variable-width fonts. Only fixed-width ones. Long time ago, when SynEdit was being developed actively such request was made by one user and rejected due the rewrite needed to support variable-width fonts. For this reason I dropped SynEdit from my toolbox. I now use Scintilla, a much better editor.