When using the fill-column-indicator package with org mode, I get wrong argument errors when exiting the source block editing window, issues with utf-8 character artefacts in source blocks exported to html and some other minor quirks. How can you fix this?
Current emacs 25.1 and org-mode 9.0.5
This is a known issue with org-mode and fci-mode. See here and here for a discussion and some suggested solutions. Personally, I found the cure to be worse than the symptom and it didn't quite fit with what I wanted.
I have instead found an alternative which works with org-mode and still provides me with the sort of information I was after with fci-mode. I found it was trivial to get similar functionality with whitespace-mode. Rather than a vertical line indicating the fill column, a face is used to colour all characters past the fill line with a different colour.
(use-package whitespace-cleanup-mode :ensure t :diminish whitespace-cleanup-mode :init (setq whitespace-cleanup-mode-only-if-initially-clean nil whitespace-line-column 80 whitespace-style '(face lines-tail)) :config (global-whitespace-mode) (global-whitespace-cleanup-mode))