I edit a lot of Sweave documents. Sweave is a noweb format that embeds chunks of R code in Latex documents. The R code is the executed to produce figures for example. Emacs has very neat support for these documents and changes modes depending on where I am in the document (latex-mode or ESS for chunks of R code). However, when I edit these documents with Vimpulse turned on, there are glitches when I enter or exit chunks, i.e. when the mode is changed. For example, Vimpulse changes from insert mode to command mode when I enter a chunk. When I search for a word and land on a match inside a R chunk, pressing "n" does not get me to the next match but inserts an n although I'm not in insert mode. Pressing "n" again gets me to the next match. Is anybody else having these problems? Is there a fix? Titus