Timestamps for some points of the video: 0:00 Title page 0:15 Prehistory 1: eev appeared by accident 1:08 Prehistory 2: my notes started to have lots of elisp hyperlinks 2:35 Prehistory 3: M-x eev 3:04 Prehistory 4: several other kinds of elisp kyperlinks 4:05 Prehistory 5: these elisp hyperlinks could be put in comments 5:34 Prehistory 6: variants of M-x eev 5:41 Prehistory 7: several megabytes of scripts and notes (here) 6:41 Prehistory 8: I was sure that everybody was using Emacs like that 7:52 Prehistory 9: "users should not be forced to see Lisp" 9:22 Eev as an ELPA package 10:51 Eev as an ELPA package (2) 11:20 M-j - and how beginners should use it 12:54 A demo 13:10 Demo: patching xpdf (e-script) 14:01 Demo: the `find-man' links 14:45 Demo: the `find-apt-get-source-links' 15:11 Demo: the eepitch block (in red star lines) (see this) 15:48 Demo: eepitch on non-red star lines 15:56 Demo: eepitch in action 16:47 Demo: the `find-fline's to the source directory 17:07 Demo: `code-c-d' (see this) 17:22 Demo: `find-xpdffile' 17:32 Demo: `find-xpdfsh' 17:44 Demo: `find-xpdfgrep' 18:32 Demo: the second `find-xpdfgrep' 18:46 Demo: the relevant occurrence / direct link to it 19:18 Links A transcription of what I say in the final part (i.e., in the demo): 13:11 Let me show you an example of "executable notes and how to play them back". 13:18 I will only be able to explain how to _record_ these executable notes in the longer video. 13:25 Anyway: when I was recording this video I realized that xpdf was behaving in a very annoying way - 13:34 it was changing the page in moments that I didn't want it to... 13:39 and the problem was that when my finger was at the right side of the touchpad 13:45 and I moved it up or down this would be interpreted as a _mousewheel scroll_, 13:52 that would be interpreted as PageUp or PageDown, 13:57 and I wanted to disable that - I wanted to disable the support for mousewheel scroll in xpdf. 14:01 So I took a look at the man page for xpdf - here - 14:06 I didn't find a simple way to change that by changing a configuration file 14:11 but I found a section that described all the default mouse bindings - here - 14:18 I found a line that seemed to be relevant - this one - 14:21 I created a hyperlink that pointed directly to that line - this one - 14:30 and I also found an explanation for what this function does 14:35 and the explanation says that this function either scrolls up by some pixels 14:41 or it moves to the previous page - which means PageUp. 14:46 So the _quickest_ way to change xpdf - because I was in a hurry - 14:51 was by downloading and recompiling the Debian source with some changes. 14:56 I used this hyperlink here, that uses a template, to generate several links 15:01 and several shell commands for downloading and recompiling a debian source package. 15:08 I copied these lines to my notes with some small changes, 15:15 and this part - here - uses the alternative to M-x eev... 15:20 remember that I said that my old way of sending lines to the shell was by using M-x eev, 15:27 that was very clumsy: it needed several keystrokes, and it was difficult to install 15:34 because we would need to change an rcfile. 15:38 So, the new alternative to it uses just , 15:43 that behaves in one way in lines that start with a red star - like these ones - 15:49 and in another way in lines that do not start with a red star. 15:54 Let me change the font to a smaller one to show how it works. 16:00 If I type in these three lines - here - 16:03 this will set up a target buffer - here - running a shell, 16:08 and if I type in these lines - here - this will send these commands to the shell. 16:14 This command, in particular, it downloads - sorry, it _makes sure_ that I have 16:20 all the Debian packages that I need to be able to compile the source for xpdf, 16:27 and this command - here - downloads the source package for xpdf 16:34 and unpacks it. It takes a few seconds - here. 16:40 I do not want to execute this thing now - this thing would recompile the source. 16:49 So, this hyperlink - here - opens this temporary directory, 16:54 and it turns out that the source package was unpacked in this subdirectory - here - 17:04 so this hyperlink points to the subdirectory, 17:07 and this s-expression - here - defines several shorter hyperlinks with "find-xpdf" in their names 17:17 that operate in this subdirectory - here. 17:22 So, this hyperlink - here - opens that directory, 17:30 this one - here - runs these shell commands in that directory 17:37 to list all the files - remember that I haven't compiled anything yet, 17:41 so all these files belong to the source package, 17:46 and this one is much more interesting - it runs a grep in that directory. 17:51 Remember that I discovered that the name of the mouse event that was bound to 17:57 PageUp, or to the _bad_ PageUp in the bad PageDown, 18:02 was MousePress4 (and MousePress5)... 18:06 So this grep here searches for all the occurrences of MousePress4 18:12 in the source... and it shows that there are only two occurrences, 18:18 one of them in the source for the man page and the other one 18:22 in the rendered version of that source, which is not good... 18:27 Let me change to the bigger font again. 18:31 So I decided to search for the function that was associated to that mouse event - 18:39 this function here - and I found several occurrences of that string, 18:45 and it turned out that _this_ is a relevant occurrence, 18:49 so I created a direct link to that source file, 18:53 and I discovered that if I commented out these lines by hand 19:03 and recompiled everything and installed the new debian binary package 19:09 then I would get an xpdf that does not have the annoying behavior. But... 19:15 That's it.