问题
I use spaces for indentation in source code, how can I higlight/mark tabs, that are in code?
It could be red, the same as when I use (setq-default show-trailing-whitespace t)
回答1:
Just use command toggle-highlight-tabs from library highlight-chars.el.
Or you can turn on tab highlighting by default by adding function hc-highlight-tabs to font-lock-mode-hook in your init file:
(add-hook 'font-lock-mode-hook 'hc-highlight-tabs)
You can turn on/off the highlighting provided by library Highlight Chars:
- in the current buffer only (i.e., locally),
- globally whenever Font Lock mode is enabled, or
- automatically whenever a buffer is in a given major mode
回答2:
As a hint from @abo-abo I found that I can use whitespace-mode with this code:
(setq whitespace-style '(face tabs))
(whitespace-mode)
来源：https://stackoverflow.com/questions/22009725/how-to-higlight-tabs-in-emacs