From: Alan Mackenzie Date: Sat, 11 Apr 2020 21:04:50 +0000 (+0000) Subject: Mention jit-lock deferred as an alternative to fast-but-imprecise-scrolling X-Git-Tag: emacs-27.0.91~27 X-Git-Url: http://git.eshelyaron.com/gitweb/?a=commitdiff_plain;h=cf57663f2ab80814d17eee0f21b498262f933d89;p=emacs.git Mention jit-lock deferred as an alternative to fast-but-imprecise-scrolling * doc/emacs/display.texi (Scrolling): Add a paragraph on using jit-lock deferred fontification as a way of obviating Emacs hanging after auto-repeated scrolling. --- diff --git a/doc/emacs/display.texi b/doc/emacs/display.texi index 8444aef3bdd..4273357995f 100644 --- a/doc/emacs/display.texi +++ b/doc/emacs/display.texi @@ -141,6 +141,15 @@ default face. This can cause Emacs to scroll to somewhat wrong buffer positions when the faces in use are not all the same size, even with single (i.e., without auto-repeat) scrolling operations. +@vindex jit-lock-defer-time +As an alternative to setting @code{fast-but-imprecise-scrolling} you +might prefer to enable jit-lock deferred fontification (@pxref{Font +Lock}). To do this, customize @code{jit-lock-defer-time} to a small +positive number such as 0.25, or even 0.1 if you type quickly. This +gives you less jerky scrolling when you hold down @kbd{C-v}, but the +window contents after any action which scrolls into a fresh portion of +the buffer will be momentarily unfontified. + @vindex scroll-up @vindex scroll-down @findex scroll-up-line