Update README.md

Author: m0vie

README.md

@@ -46,15 +46,10 @@ syntax highlighting.
 
 ### Does syntax highlighting work during incremental history search?
 
-Yes!
+Highlighting the command line during an incremental history search (by default bound to
+to <kbd>Ctrl+R</kbd> in zsh's emacs keymap) requires zsh 5.3.2 or newer.
 
-If you're using `history-incremental-search-backward` (by default bound to <kbd>Ctrl+R</kbd>
-in zsh's emacs keymap) then it works with _zsh version 5.3 and newer_.
-
-If you're using `history-incremental-pattern-search-backward`, then syntax highlighting works
-in _zsh 5.3.2 and newer_ due to [a bug in zsh](http://www.zsh.org/cgi-bin/mla/redirect?WORKERNUMBER=40285).
-
-Under zsh 5.2 and older, the zsh-default [underlining][zshzle-Character-Highlighting]
+Under zsh 5.3.1 and older, the zsh-default [underlining][zshzle-Character-Highlighting]
 of the matched portion of the buffer remains available, but zsh-syntax-highlighting's
 additional highlighting is unavailable.  (Those versions of zsh do not provide
 enough information to allow computing the highlighting correctly.)