ungleich-learning-circle/balazs/orgfiles/emacs_learning.org
2020-05-06 12:07:15 +02:00

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*** Organisation #5: Emacs refresher
**** Lecture content
***** Objective: get confident with emacs commands
***** Find out and document how to do the following steps
Resources:
C-h b
A searchable list of commands and shortcuts, very helpful
https://www.gnu.org/software/emacs/manual/html_node/emacs/
https://www.emacswiki.org/emacs/
https://www.gnu.org/software/emacs/refcards/pdf/refcard.pdf
****** Search for something forward: C-s
I've been using it, it's great!
****** How to continue searching
C-s multiple times.
****** Search for something backward
C-r
****** Search for regular expressions instead of string (forward, backward)
urxvt scrollback-search is already bound for : C-M-s
there is no easy way to disable it atm
note: maybe i'll try the suckless terminal or xterm
C-M-r is working
note: need to learn regex
****** Go to the beginning of the line
C-a
****** Go to the end of the line
C-e
****** Delete a word in front (to the right of the cursor)
C-del
****** Delete a word in back (to the left of the cursor)
M-backspace
****** List all "occurences" of a word in a file
M-x grep or grep-find - Return
enter string and/or specify a file (default directory is set to the currently edited file) - Return
The result will show up in a new windows. C-x-o to switch windows
******* You can copy above instructions into an emacs buffer
******* And test it by showing all occurences of the word "Search"
****** Search (GREP) for a word in all files in a directory RECURSIVELY
M-x grep(-find) - Return
add "-r" to the executed grep command
****** Save the CURRENT buffer
C-x C-s
****** Save ALL open files
C-x s
****** Split the window/buffer vertically
C-x 2
****** Split the window/buffer horizontally
C-x 3
****** Switch between the different windows
C-x o
****** Close all buffers besides the active one
******* Don't kill it!
C-x 1
****** Close only the active buffer
There is no "Close buffer" per se (spent 10 minutes finding it)
The way is to Close the Window: C-x 0
List the buffers by: C-x C-b (you can switch to the buffers from this buffer (ret))
******* Don't kill it
C-x k
to kill it
****** Kill the active buffer
C-x k
****** Describe/Explain the difference between closing and killing
It's like tmux:
"Closing" just stops the rendering, and it will continue to run in the background.
Killing stops the process and frees up the memory.
****** Switch between buffers that are not shown
C-x b (tab to list buffers)
******* Document two very similar, but slightly different ways
Switch buffers quickly:
C-x <left>
C-x <right>
ido mode should speed up buffer switching (haven't tried)
***** Outcome
****** Document all above commands in your learning org sheet
****** Share your documentation at the end of the session (not before)