Here’s an interesting VimGolf challenge. As they say in the challenge, it’s a simple problem but they’re looking for interesting solutions. The challenge is to turn this
app.config['CHALLENGE_FOLDER'] = SOLUTIONS_FOLDER app.config['SOLUTIONS_FOLDER'] = CHALLENGE_FOLDER
into this
app.config['CHALLENGE_FOLDER'] = CHALLENGE_FOLDER app.config['SOLUTIONS_FOLDER'] = SOLUTIONS_FOLDER
The obvious solution that any Emacs user would think of does the job in 81 keystrokes.
| 【Ctrl+s =】 | cursor to = |
| 【Ctrl+k】 | kill after = |
| 【Ctrl+n】 | down one line |
| 【Ctrl+y】 | insert ␠SOLUTION_FOLDER |
| 【Ctrl+k】 | kill rest of line |
| 【Ctrl+p】 | up one line |
| 【Ctrl+y】 | insert ␠CHALLENGE_FOLDER |
The best Vim solutions also do it in 8.
What I really want to do is something along the lines of
| 【Ctrl+s = Ctrl+s】 | Mark rectangle |
| 【Ctrl+x r k】 | Kill rectangle |
| 【Ctrl+x Ctrl+t】 | Swap lines |
| 【Ctrl+<】 | Beginning of buffer |
| 【Ctrl+x r y】 | Yank rectangle |
that’s 12 keystrokes, 50% more than the obvious solution. If I use CUA Selection Mode (as I wrote about previously) I can do it in 9 with essentially the same method as above. Is there a clever way of doing this or is the obvious solution with 8 keystrokes the best we can do? If you can beat 8 keystrokes—especially if it’s something clever—be sure to leave a comment.
Update: Fuco does it in 6.
Update 2: Fuco shaves off another keystroke to a total of 5. Definitely a heavy weight contender.
Footnotes:
1 Using our usual rules of changing the text but not saving the buffer.
How about
C-s =
C-RET (enter cua)
C-n
C-e
C-S-R
Wow! That’s beautiful. I’m not sure if it’s a configuration thing but your solution didn’t work as is for me. I had to exit isearch with a Return before I could enter
cua-selection-modeand then I had to use Meta+Shift+r instead of Ctrl+Shift+r to reverse the lines. That does it in 7 so it’s a definite win.Oh, sorry, It is indeed M-S-r, I was mindlessly copy-pasting the lines from above. As for exiting search-mode, I’m not aware of setting anything special, but I’ll look into it.
Oh, I know what it is. I mapped Ctrl+Return to exit the other end of the isearch string as I wrote about here. So your solution does it in 6. Most excellent!
(Ok, I’m sorry for spamming, if there’s a way to edit the posts, or merge them, someone please do it)
I rememberd what I changed just as I sent the comment :P I use this to get rid of useless terminal emulation, as I almost never use emacs in terminal, and when I do, I can just disable this anyway. I don’t actually understand how the remapping work *in detail*, but this does the job done. If there’s a better way, I don’t know.
You can then bind stuff to C-m by using (kbd “C-”), similar for the other two.
;;; stupid terminal key sequence remapping
(define-key key-translation-map [return] [?\r])
(define-key key-translation-map [?\C-\m] [(control m-key)])
(define-key function-key-map [return] nil)
(define-key function-key-map [?\r] nil)
(define-key key-translation-map [tab] [?\t])
(define-key key-translation-map [?\C-\i] [(control i-key)])
(define-key function-key-map [tab] nil)
(define-key function-key-map [?\t] nil)
(define-key key-translation-map [escape] [?\e])
(define-key input-decode-map [?\C-\[] [(control left_bracket)])
(define-key function-key-map [escape] nil)
(define-key function-key-map [?\e] nil)
Here’s a better still solution:
C-s =
C-RET
M-e (end-of-sentence)
M-S-r
I think this is about it, without using custom functions.