I am struggling with emacs constantly hanging as soon as I move the cursor into a code chunk in Rmd files. It spends about two seconds moving the cursor after I hit an arrow key. Can you help me get normal response times from Emacs, so I can get back to work, please?
I used (the update) at how to setup Knitr workflow in Emacs? and installed ess, polymode, and poly-R from melpa. I have poly-markdown installed too.
Much less annoyingly, but still odd and maybe related, I get hundreds of buffers as I navigate through an Rmd file. They each seem to associate with tiny bits of the code in R code chunks and are named like "file.Rmd[r]<443>" where 443 is an arbitrary number. I have tried disabling minor modes to see if that should help, but due to all these buffers, I can't test if that works. If I disable a mode and hit an arrow key the buffer changes, and I think the mode is back on.
When I run a cpu profiler, go into a code chunk and try to move around a bit, the resource usage looks like this
- redisplay_internal (C function) 5835 88%
- imenu-update-menubar 5819 88%
- imenu--make-index-alist 5819 88%
- imenu-default-create-index-function 5819 88%
- imenu--generic-function 5819 88%
- syntax-ppss 5764 87%
- syntax-propertize 5755 87%
- apply 5755 87%
- pm-execute-syntax-propertize-narrowed-to-span 5755 87%
- if 5755 87%
- condition-case 5755 87%
- save-excursion 5755 87%
- if 5755 87%
- progn 5751 87%
- pm-map-over-spans 5751 87%
- save-restriction 5751 87%
- let* 5751 87%
- while 5751 87%
- let 4376 66%
- pm-select-buffer 4376 66%
- apply 4368 66%
- #<compiled 0x171e73d> 4368 66%
- apply 4368 66%
- #<compiled 0x3ba675> 4368 66% + apply 4368 66% car 4 0%
- save-excursion 1343 20%
- funcall 1343 20%
- #<lambda 0x78a6431> 1343 20%
- setq 20 0%
- while 4 0%
- let* 4 0%
- funcall 8 0% kill-this-buffer-enabled-p 4 0%
- tool-bar-make-keymap 4 0%
- ... 413 6%
- command-execute 345 5%
- timer-event-handler 4 0%
- polymode-post-command-select-buffer 2 0%
I use Emacs 26.3 on ubuntu 20.04
This is the first lines from "C-h m" Enabled minor modes: Auto-Composition Auto-Compression Auto-Encryption Column-Number Cursor-Intangible Diff-Auto-Refine Eldoc Electric-Indent Ess-Elisp-Trace Ess-Roxy File-Name-Shadow Font-Lock Global-Eldoc Global-Font-Lock Line-Number Menu-Bar Mouse-Wheel Outline Poly-Markdown+R Shell-Dirtrack Show-Paren Tool-Bar Tooltip Transient-Mark
(Information about these minor modes follows the major mode info.)
ESS[R] mode defined in ‘ess-r-mode.el’: Major mode for editing R source. See ‘ess-mode’ for more help.
Let me know if I can provide more relevant information.
