Merge Abrams' workshop on Emacs macros into main notes file
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* Workshop for Emacs Macros
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(By [[https://www.howardism.org/][Howard Abrams]], 2015 Nov 24)
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Basic idea of this file is to be both a *guide* and a *practice pad*
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for leveling up on Emacs’ keyboard macro system.
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To use, just [[https://github.com/howardabrams/pdx-emacs-hackers/raw/master/workshops/keyboard-macros.org][download this file]] to your system, and edit it in Emacs.
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Then just follow along... If you are not familiar with org-mode files,
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here are the basics for this workshop:
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- Hit a tab on the header expands or collapses it
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- Narrow to show just one section with: C-x n s
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- Return by widening normally with: C-x n w
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- Hyperlinks can be clicked on to view the Emacs Manual
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Pretty much treat the rest of this document as a text file.
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** Basic Usage
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Let’s begin with something simple to try out this project.
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In the /block area/ below, hit: C-c ' (yes, the apostrophe).
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When done with the tasks, hit: C-x C-s to close and return here.
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#+BEGIN_SRC org
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- This foobar should be Interesting
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- Nulla foobar Posuere
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- Nullam foobar Tempus
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- Etiam foobar laoreet quam sed Arcu
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- Donec foobar hendrerit tempor Tellus
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- Mauris foobar mollis tincidunt Felis
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- etiam laoreet quam sed arcu
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- nullam rutrum
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- sed diam
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- lorem ipsum dolor sit amet, consectetuer adipiscing elit
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- mauris ac felis vel velit tristique imperdiet
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- fusce suscipit, wisi nec facilisis facilisis, est dui fermentum leo, quis tempor ligula erat quis odio
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- donec hendrerit tempor tellus
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#+END_SRC
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Notice that the frame is split with this document still visible?
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Good, let’s play around. Let’s capitalize the first letter of each line.
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Position point at the beginning of the first line, and then:
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- F3
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- M-c
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- C-n
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- C-a
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- F4
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Press F4 repeatedly to capitalize the first word on each line.
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Don’t capitalize /every/ line... leave a few alone for a moment.
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Now you have the basics.
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Let’s make a new macro to capitalize the /last/ word on each line.
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Pop back up to the top of the list, and:
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- F3
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- C-e
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- M-b
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- M-c
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- C-n
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- F4
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Once again, leave a few lines alone.
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Just one more macro, as I want to show you something interesting.
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Jump back to the beginning, and:
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- F3
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- C-a
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- M-f
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- Space
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- foobar (or type any single word you find amusing)
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- C-n
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- F4
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Type: C-x C-k C-k
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Notice it behaves the same as F4, but you can keep typing C-k to
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execute your macro.
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Start typing C-n and/or C-p and notice the minibuffer. It alternates
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between the following:
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- M-c C-n C-a
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- C-e M-b M-c C-n
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- C-a M-f SPC f 2*o b a r C-n
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Typing C-k at any point will execute that macro. You’ve now see the
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Emacs Macro Ring, and can manipulate it. You are now at Level 2.
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Type C-c ' (apostrophe) to close that side window.
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** Naming Macros
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While that =foobar= macro may be quite handy, looping around the
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keyboard macro ring to select it may be inefficient. Name it!
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C-x C-k n
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Give it a name of foobar, and now, you can: M-x foobar
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to have the macro run.
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Perhaps it may be more useful to bind that macro to some un-used
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key, like C-c k or F2 ... type:
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C-x C-k b
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And then type your binding, e.g. C-c k
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You know that C-c followed by a single letter is supposed to be free
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of usage and available for your nefarious reasons, right?
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Read the [[info:emacs#Save%20Keyboard%20Macro][the Emacs Manual]] for details. If you actually tried this
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example, then you have earned enough experience points to be level 3.
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** What do you mean On Every Line?
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Keyboard macros are slick, and while we /could/ prefix the F4 with
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the numbering prefix to run it multiple times at once, e.g. C-9 F4,
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a typical use case is to run it on every line in a region.
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Position the cursor in the block, and type: C-c ‘
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#+BEGIN_SRC org
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I will not take out the trash
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I should not stop swearing
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I may not stop to smell the roses
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I do not want to go shopping
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I could not care less
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#+END_SRC
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With the point on the first line, type:
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- F3
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- C-a
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- M-f
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- M-f
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- Space
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- not (type the word, =not=)
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- F4
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Now select the remaining 4 lines any way you like, and type:
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- C-x C-k r
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Read [[info:emacs#Basic%20Keyboard%20Macro][the Emacs Manual]] for complete details, and welcome to level 4.
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** Numbering
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Numbering things seems to be important to people. Let’s see if we
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can easily number the worst song ever inflicted on humanity.
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Once again, position the point inside the block, and type: C-c '
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#+BEGIN_SRC org
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1 Drummers Drumming
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2 Pipers Piping
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3 Lords a Leaping
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4 Ladies Dancing
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5 Maids a Milking
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6 Swans a Swimming
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7 Geese a Laying
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8 Golden Rings
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9 Calling Birds
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10 French Hens
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11 Turtle Doves
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12 Partridge in a Pear Tree
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#+END_SRC
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Follow along at home. First, position the point at the end (on the
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line with the partridge), and:
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- C-x C-k C-c
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- 1
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- Return (to set a counter to 1)
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- F3
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- C-a
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- F3
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- Spacebar
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- C-n
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- F4
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Yes, hitting the F3 key twice (once to start the macro, and again to
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insert the value of the counter) is a bit odd. You can also use the
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binding: C-x C-k C-i
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Each time you hit F4, you increment the counter that is inserted.
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By the way, if you didn’t do the whole =C-x C-k C-c= to set the
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counter to 1, the first value would be 0. Read [[info:emacs#Keyboard%20Macro%20Counter][the manual]] for
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details.
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** Fixing Macros
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Now that you are a Level 5 Elf Keyboard Macro-er, and you can now
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sling macros everywhere, you may notice that sometimes, in the
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middle of a long macro, you flub it.
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If you hit F4 too soon (it happens), hit: C-u C-u F3 to pick up
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where you left off and enter the rest of the macro. Hit F4 when you
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are really finished.
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If you need to fix a keyboard macro with more finesse, type:
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C-x C-k C-e
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And behold the glory. Tis a simple language that should be pretty
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obvious to a skilled Macro-er as yourself. Type C-h m once in that
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buffer to display details of how to edit the macro. When you are
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finished editing, type: C-c C-c
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I’ll let you play around with your own example for this one.
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Read [[info:emacs#Edit%20Keyboard%20Macro][the manual]] for complete details.
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** Variations on a Theme
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To gain the Level 7 Keyboard Macro-er title, one should know how to
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customize a macro /while/ running it. The following section of HTML
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code needs some textual changes. We want to add one of the following
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phrases to the /end/ of every paragraph that has a =class= of =change=:
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* Because I said so. Got it?
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* Because I'm the boss. Got it?
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* You heard me. Got it?
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* Just do it. Got it?
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To begin, first move to the following block (hint: C-c M-f) and hit
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TAB to collapse the block (you gotta see all the instructions,
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right?) Next, issue a C-c ' on this block to show it in a new
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window. If you have trouble with your HTML mode, change the =html=
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to =text=.
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#+BEGIN_SRC html
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<!DOCTYPE html>
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<html>
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<body>
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<p>
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Proin neque massa, cursus ut, gravida ut, lobortis eget, lacus.
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Praesent augue. Sed diam. Nunc eleifend leo vitae magna. Nunc
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rutrum turpis sed pede.
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</p>
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<p class="change">
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Nullam rutrum. Nunc rutrum turpis sed pede.
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</p>
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<p>
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Phasellus at dui in ligula mollis ultricies. Curabitur lacinia
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pulvinar nibh. Donec pretium posuere tellus. Praesent
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fermentum tempor tellus. Proin quam nisl, tincidunt et, mattis
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eget, convallis nec, purus.
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</p>
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<p class="change">
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Fusce sagittis, libero non molestie mollis, magna orci ultrices
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dolor, at vulputate neque nulla lacinia eros. Sed diam. Nam
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vestibulum accumsan nisl.
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</p>
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<p>
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Aliquam feugiat tellus ut neque. Nam vestibulum accumsan
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nisl. Praesent fermentum tempor tellus.
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</p>
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<p>
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Vivamus id enim. Suspendisse potenti. Curabitur lacinia
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pulvinar nibh. Mauris ac felis vel velit tristique imperdiet.
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</p>
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<p class="change">
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Donec vitae dolor. Mauris ac felis vel velit tristique
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imperdiet. Nunc aliquet, augue nec adipiscing interdum, lacus
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tellus malesuada massa, quis varius mi purus non odio. Proin
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quam nisl, tincidunt et, mattis eget, convallis nec, purus. Nam
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euismod tellus id erat.
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</p>
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<p>
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Nullam rutrum.
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</p>
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</body>
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</html>
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#+END_SRC
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Type the following:
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- F3
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- C-s
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- Type: class="change"
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- C-e
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- C-s
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- Type: </p>
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- C-p
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- C-e
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- C-x q
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- Type: Got it?
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- C-n
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- F4
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In this particular case, we actually didn't do anything special, so
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move to the beginning of the buffer, and hit F4, and the cursor will
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go to the end of every paragraph that needs changing, and stop with
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a prompt:
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Proceed with macro? (Y, N, RET, C-l, C-r)
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Type C-r and begin typing one of our phrases, and when you are done,
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type: C-M-c
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The prompt will be re-displayed, so finish the macro with 'Y'.
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Check out [[info:emacs#Keyboard%20Macro%20Query][the manual]] for details on this =C-x q= business.
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* Emacs Calc Tutorials :NOTE:
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By Andrew Hyatt, found here: https://github.com/ahyatt/emacs-calc-tutorials.
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@ -1,308 +0,0 @@
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#+TITLE: Workshop for Emacs Macros
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#+AUTHOR: Howard Abrams
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#+DATE: 2015 Nov 24
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#+TAGS: emacs workshop
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#+STARTUP: hideblocks
|
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|
||||
Basic idea of this file is to be both a *guide* and a *practice pad*
|
||||
for leveling up on Emacs’ keyboard macro system.
|
||||
|
||||
To use, just [[https://github.com/howardabrams/pdx-emacs-hackers/raw/master/workshops/keyboard-macros.org][download this file]] to your system, and edit it in Emacs.
|
||||
Then just follow along... If you are not familiar with org-mode files,
|
||||
here are the basics for this workshop:
|
||||
|
||||
- Hit a tab on the header expands or collapses it
|
||||
- Narrow to show just one section with: C-x n s
|
||||
- Return by widening normally with: C-x n w
|
||||
- Hyperlinks can be clicked on to view the Emacs Manual
|
||||
|
||||
Pretty much treat the rest of this document as a text file.
|
||||
|
||||
* Basic Usage
|
||||
|
||||
Let’s begin with something simple to try out this project.
|
||||
In the /block area/ below, hit: C-c ' (yes, the apostrophe).
|
||||
When done with the tasks, hit: C-x C-s to close and return here.
|
||||
|
||||
#+BEGIN_SRC org
|
||||
- This foobar should be Interesting
|
||||
- Nulla foobar Posuere
|
||||
- Nullam foobar Tempus
|
||||
- Etiam foobar laoreet quam sed Arcu
|
||||
- Donec foobar hendrerit tempor Tellus
|
||||
- Mauris foobar mollis tincidunt Felis
|
||||
- etiam laoreet quam sed arcu
|
||||
- nullam rutrum
|
||||
- sed diam
|
||||
- lorem ipsum dolor sit amet, consectetuer adipiscing elit
|
||||
- mauris ac felis vel velit tristique imperdiet
|
||||
- fusce suscipit, wisi nec facilisis facilisis, est dui fermentum leo, quis tempor ligula erat quis odio
|
||||
- donec hendrerit tempor tellus
|
||||
#+END_SRC
|
||||
|
||||
Notice that the frame is split with this document still visible?
|
||||
|
||||
Good, let’s play around. Let’s capitalize the first letter of each line.
|
||||
Position point at the beginning of the first line, and then:
|
||||
|
||||
- F3
|
||||
- M-c
|
||||
- C-n
|
||||
- C-a
|
||||
- F4
|
||||
|
||||
Press F4 repeatedly to capitalize the first word on each line.
|
||||
Don’t capitalize /every/ line... leave a few alone for a moment.
|
||||
Now you have the basics.
|
||||
|
||||
Let’s make a new macro to capitalize the /last/ word on each line.
|
||||
Pop back up to the top of the list, and:
|
||||
|
||||
- F3
|
||||
- C-e
|
||||
- M-b
|
||||
- M-c
|
||||
- C-n
|
||||
- F4
|
||||
|
||||
Once again, leave a few lines alone.
|
||||
Just one more macro, as I want to show you something interesting.
|
||||
Jump back to the beginning, and:
|
||||
|
||||
- F3
|
||||
- C-a
|
||||
- M-f
|
||||
- Space
|
||||
- foobar (or type any single word you find amusing)
|
||||
- C-n
|
||||
- F4
|
||||
|
||||
Type: C-x C-k C-k
|
||||
|
||||
Notice it behaves the same as F4, but you can keep typing C-k to
|
||||
execute your macro.
|
||||
|
||||
Start typing C-n and/or C-p and notice the minibuffer. It alternates
|
||||
between the following:
|
||||
|
||||
- M-c C-n C-a
|
||||
- C-e M-b M-c C-n
|
||||
- C-a M-f SPC f 2*o b a r C-n
|
||||
|
||||
Typing C-k at any point will execute that macro. You’ve now see the
|
||||
Emacs Macro Ring, and can manipulate it. You are now at Level 2.
|
||||
|
||||
Type C-c ' (apostrophe) to close that side window.
|
||||
|
||||
* Naming Macros
|
||||
|
||||
While that =foobar= macro may be quite handy, looping around the
|
||||
keyboard macro ring to select it may be inefficient. Name it!
|
||||
|
||||
C-x C-k n
|
||||
|
||||
Give it a name of foobar, and now, you can: M-x foobar
|
||||
to have the macro run.
|
||||
|
||||
Perhaps it may be more useful to bind that macro to some un-used
|
||||
key, like C-c k or F2 ... type:
|
||||
|
||||
C-x C-k b
|
||||
|
||||
And then type your binding, e.g. C-c k
|
||||
|
||||
You know that C-c followed by a single letter is supposed to be free
|
||||
of usage and available for your nefarious reasons, right?
|
||||
|
||||
Read the [[info:emacs#Save%20Keyboard%20Macro][the Emacs Manual]] for details. If you actually tried this
|
||||
example, then you have earned enough experience points to be level 3.
|
||||
|
||||
* What do you mean On Every Line?
|
||||
|
||||
Keyboard macros are slick, and while we /could/ prefix the F4 with
|
||||
the numbering prefix to run it multiple times at once, e.g. C-9 F4,
|
||||
a typical use case is to run it on every line in a region.
|
||||
|
||||
Position the cursor in the block, and type: C-c ‘
|
||||
|
||||
#+BEGIN_SRC org
|
||||
I will not take out the trash
|
||||
I should not stop swearing
|
||||
I may not stop to smell the roses
|
||||
I do not want to go shopping
|
||||
I could not care less
|
||||
#+END_SRC
|
||||
|
||||
With the point on the first line, type:
|
||||
|
||||
- F3
|
||||
- C-a
|
||||
- M-f
|
||||
- M-f
|
||||
- Space
|
||||
- not (type the word, =not=)
|
||||
- F4
|
||||
|
||||
Now select the remaining 4 lines any way you like, and type:
|
||||
|
||||
- C-x C-k r
|
||||
|
||||
Read [[info:emacs#Basic%20Keyboard%20Macro][the Emacs Manual]] for complete details, and welcome to level 4.
|
||||
|
||||
* Numbering
|
||||
|
||||
Numbering things seems to be important to people. Let’s see if we
|
||||
can easily number the worst song ever inflicted on humanity.
|
||||
|
||||
Once again, position the point inside the block, and type: C-c '
|
||||
|
||||
#+BEGIN_SRC org
|
||||
1 Drummers Drumming
|
||||
2 Pipers Piping
|
||||
3 Lords a Leaping
|
||||
4 Ladies Dancing
|
||||
5 Maids a Milking
|
||||
6 Swans a Swimming
|
||||
7 Geese a Laying
|
||||
8 Golden Rings
|
||||
9 Calling Birds
|
||||
10 French Hens
|
||||
11 Turtle Doves
|
||||
12 Partridge in a Pear Tree
|
||||
#+END_SRC
|
||||
|
||||
Follow along at home. First, position the point at the end (on the
|
||||
line with the partridge), and:
|
||||
|
||||
- C-x C-k C-c
|
||||
- 1
|
||||
- Return (to set a counter to 1)
|
||||
- F3
|
||||
- C-a
|
||||
- F3
|
||||
- Spacebar
|
||||
- C-n
|
||||
- F4
|
||||
|
||||
Yes, hitting the F3 key twice (once to start the macro, and again to
|
||||
insert the value of the counter) is a bit odd. You can also use the
|
||||
binding: C-x C-k C-i
|
||||
|
||||
Each time you hit F4, you increment the counter that is inserted.
|
||||
|
||||
By the way, if you didn’t do the whole =C-x C-k C-c= to set the
|
||||
counter to 1, the first value would be 0. Read [[info:emacs#Keyboard%20Macro%20Counter][the manual]] for
|
||||
details.
|
||||
|
||||
* Fixing Macros
|
||||
|
||||
Now that you are a Level 5 Elf Keyboard Macro-er, and you can now
|
||||
sling macros everywhere, you may notice that sometimes, in the
|
||||
middle of a long macro, you flub it.
|
||||
|
||||
If you hit F4 too soon (it happens), hit: C-u C-u F3 to pick up
|
||||
where you left off and enter the rest of the macro. Hit F4 when you
|
||||
are really finished.
|
||||
|
||||
If you need to fix a keyboard macro with more finesse, type:
|
||||
|
||||
C-x C-k C-e
|
||||
|
||||
And behold the glory. Tis a simple language that should be pretty
|
||||
obvious to a skilled Macro-er as yourself. Type C-h m once in that
|
||||
buffer to display details of how to edit the macro. When you are
|
||||
finished editing, type: C-c C-c
|
||||
|
||||
I’ll let you play around with your own example for this one.
|
||||
Read [[info:emacs#Edit%20Keyboard%20Macro][the manual]] for complete details.
|
||||
|
||||
* Variations on a Theme
|
||||
|
||||
To gain the Level 7 Keyboard Macro-er title, one should know how to
|
||||
customize a macro /while/ running it. The following section of HTML
|
||||
code needs some textual changes. We want to add one of the following
|
||||
phrases to the /end/ of every paragraph that has a =class= of =change=:
|
||||
|
||||
* Because I said so. Got it?
|
||||
* Because I'm the boss. Got it?
|
||||
* You heard me. Got it?
|
||||
* Just do it. Got it?
|
||||
|
||||
To begin, first move to the following block (hint: C-c M-f) and hit
|
||||
TAB to collapse the block (you gotta see all the instructions,
|
||||
right?) Next, issue a C-c ' on this block to show it in a new
|
||||
window. If you have trouble with your HTML mode, change the =html=
|
||||
to =text=.
|
||||
|
||||
#+BEGIN_SRC html
|
||||
<!DOCTYPE html>
|
||||
<html>
|
||||
<body>
|
||||
<p>
|
||||
Proin neque massa, cursus ut, gravida ut, lobortis eget, lacus.
|
||||
Praesent augue. Sed diam. Nunc eleifend leo vitae magna. Nunc
|
||||
rutrum turpis sed pede.
|
||||
</p>
|
||||
<p class="change">
|
||||
Nullam rutrum. Nunc rutrum turpis sed pede.
|
||||
</p>
|
||||
<p>
|
||||
Phasellus at dui in ligula mollis ultricies. Curabitur lacinia
|
||||
pulvinar nibh. Donec pretium posuere tellus. Praesent
|
||||
fermentum tempor tellus. Proin quam nisl, tincidunt et, mattis
|
||||
eget, convallis nec, purus.
|
||||
</p>
|
||||
<p class="change">
|
||||
Fusce sagittis, libero non molestie mollis, magna orci ultrices
|
||||
dolor, at vulputate neque nulla lacinia eros. Sed diam. Nam
|
||||
vestibulum accumsan nisl.
|
||||
</p>
|
||||
<p>
|
||||
Aliquam feugiat tellus ut neque. Nam vestibulum accumsan
|
||||
nisl. Praesent fermentum tempor tellus.
|
||||
</p>
|
||||
<p>
|
||||
Vivamus id enim. Suspendisse potenti. Curabitur lacinia
|
||||
pulvinar nibh. Mauris ac felis vel velit tristique imperdiet.
|
||||
</p>
|
||||
<p class="change">
|
||||
Donec vitae dolor. Mauris ac felis vel velit tristique
|
||||
imperdiet. Nunc aliquet, augue nec adipiscing interdum, lacus
|
||||
tellus malesuada massa, quis varius mi purus non odio. Proin
|
||||
quam nisl, tincidunt et, mattis eget, convallis nec, purus. Nam
|
||||
euismod tellus id erat.
|
||||
</p>
|
||||
<p>
|
||||
Nullam rutrum.
|
||||
</p>
|
||||
</body>
|
||||
</html>
|
||||
#+END_SRC
|
||||
|
||||
Type the following:
|
||||
|
||||
- F3
|
||||
- C-s
|
||||
- Type: class="change"
|
||||
- C-e
|
||||
- C-s
|
||||
- Type: </p>
|
||||
- C-p
|
||||
- C-e
|
||||
- C-x q
|
||||
- Type: Got it?
|
||||
- C-n
|
||||
- F4
|
||||
|
||||
In this particular case, we actually didn't do anything special, so
|
||||
move to the beginning of the buffer, and hit F4, and the cursor will
|
||||
go to the end of every paragraph that needs changing, and stop with
|
||||
a prompt:
|
||||
|
||||
Proceed with macro? (Y, N, RET, C-l, C-r)
|
||||
|
||||
Type C-r and begin typing one of our phrases, and when you are done,
|
||||
type: C-M-c
|
||||
|
||||
The prompt will be re-displayed, so finish the macro with 'Y'.
|
||||
Check out [[info:emacs#Keyboard%20Macro%20Query][the manual]] for details on this =C-x q= business.
|
Loading…
Reference in New Issue
Block a user