Nested loop: weird cursor behavior about gnuplot HOT 3 CLOSED

I have the same problem.

Work around:
Use normal spaces for tab.
The following lines in .emacs works fine for me (on Emacs 25.3.1).

(add-hook 'gnuplot-mode-hook
	  '(lambda ()
	     (setq indent-tabs-mode nil)))

If you want to edit an existing file, you must replace TAB-chars with spaces first.
(To do this you can do "C-x h" (mark-whole-buffer), then "M-x untabify".)

Cause of the problem:
A function (gnuplot-indent-line) in gnuplot.el does not treat TAB-chars correctly.
If indent level > 8 (e.g. 12) and TAB-chars exists, (forward-char 12) does not work as expected
(because TAB-char will be counted as 1 character, not 8).

from gnuplot.

Better solution: Apply this patch.
(I hope) you can use TAB-char for indentation without any problem.

https://gist.github.com/madchemiker/c55224939af658cebb9c95efe1f61042

from gnuplot.

Thanks @madchemiker!

from gnuplot.