I find whitespace-mode invaluable in finding trailing whitespace, use of literal tabs and the like I always have it on when looking at code. Good tips in the article but I wish it had screen shots / showed examples.
For trailing whitespace, isn't simply the variable show-trailing-whitespace enough?
I'm discovering about whitespace-mode and found this article which helped me to understand the package. Do you know if it allows to display TAB with a specific background colour?
Emfy setup recommends three settings for trailing whitespace:
(setq-default show-trailing-whitespace t)
(setq-default indicate-empty-lines t)
(setq-default indicate-buffer-boundaries 'left)
Screenshots showing the results: https://github.com/susam/emfy#show-stray-whitespace
I've never understood why so many people when discussing configuration and appearance changes don't include pictures of the results.
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