|
|
Some template-based functions of eev that are not five-minute hacks (2020)
My presentation at the EmacsConf 2020 was titled "On why most of the best features in eev look like
5-minute hacks"; this is a complement to it.
You can watch this video on youtube here, but
Youtube always converts my videos to a format that is blurry at some
points... the best way to watch it is by running the two "wget"s
and the "mpv" below; then you can use these keys to
make mpv play it in high speed.
In most cases when I record "executable notes" on how to perform
tasks (see my talk at the EmacsConf 2019!) I
record them as plain text, but in a few cases I prefer to use
functions that generate text from templates. This video is about some
non-trivial cases of functions that use templates to generate
"executable notes" that can then be executed in several different
ways.
For more on eev see http://angg.twu.net/#eev.
I recorded this video without rehearsing it first, so it's a
bit messy... sorry!
The "script" that I used in the video is here.
Its thread on reddit is here (but it has 0 comments).
Index of the video (elisp here):
0:00 Title
0:17 the reason for this title
0:18 1. `find-find-links-links-new'
1:29 generated again with these values
1:50 the implementation is very simple
2:00 in five minutes because ... generates skeletons
5:03 2. `M-x brep'
5:43 a way to download local copies
7:11 The new way: `M-x brep'
8:15 by typing `M-x brep'
8:50 and then we get this buffer here
9:17 3. The function that defines brep
9:38 `code-brurl' is a variant of `code-c-d'
10:07 find-code-url shows the code instead of executing it
11:26 this is explained in the main tutorial
12:12 accept extra arguments
12:34 if we run just this
12:40 one of the reasons for using text: comments
13:03 if we run just this with extra arguments
14:10 code-brurl executes this code here
14:20 4. `find-esetkey-links'
15:20 a big header with lots of help
16:28 I have these keybindings, for toggling
17:06 I realized that I use `M-x wrap' very often
18:18 in the emacs-devel mailing list
18:32 users should not be forced to see lisp
19:23 5. `find-youtubedl-links'
19:43 if we twist the notion user enough
20:02 user-friendly to me
20:05 The documentation is in this tutorial:
21:36 its code is here
21:55 Let me show a demo
22:15 I never type these rm -Rv/mkdir/cd by hand
22:48 let me show how to download ... the hash is here
23:25 they regenerate this buffer in slightly different ways
24:03 a video with this hash. If I visit the directory
24:32 my magic functions have to
24:50 if I run this sexp here with nil
25:00 it tries to guess the title
25:28 and if I change this {stem} here I get short links
26:14 has very long lines, but if I type super-w
26:28 I get a buffer that shows the code for find-preadingvideo
26:50 if I execute this I play the video
27:15 make a copy of this that points to the right position
27:53 summary: this is how I download videos from youtube
28:12 6. `find-here-links' and `find-extra-file-links'
28:20 it deserves another presentation just to itself
28:32 the central idea of eev
29:17 it is bound to `M-h M-h'
29:25 generates a temporary buffer with hyperlinks to here
29:30 help and a link to the tutorial in which I was
29:45 not very well documented yet
30:05 it is explained in this section of the tutorial
30:18 if we type `M-h M-e' this runs `find-extra-file-links'
30:42 here is an example in Lisp
31:06 and I can change this {c}
31:22 Let me show a more realistic example of how to use it
31:28 let's go to the directory with the video file
31:45 this file is a video file
32:00 (a glitch)
33:03 these were the things that I wanted to show
|