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How to use Davin’s version of GNU Emacs

For programming in S.J.S. it is recommended to use Davin’s version of GNU Emacs so that you get built-in syntax highlighting and automatic indentation of S.J.S. code. For more detailed tutorials on how to use Emacs, simply press f1 inside Emacs. A small caveat applies to the on-line documentation accessed via the f1 command: it explains how to use vanilla Emacs, i.e. a version that does not use my extensive customisations. I have also simplified some of the terminology from the on-line manuals.

Challenge to you: If you don’t like any of the following keybindings then most of them can be redefined to whatever you prefer.

Windows-Style Key Bindings

Emacs does not support Windows-style key bindings by default, but I have altered my version of Emacs so that it does support the following Windows-standard key bindings:

`Ctrl-o`	Open file. Similar to `Ctrl-f` but opens a Windows file dialog box. Not as fast as `Ctrl-f` and cannot be used to open folders.
`Ctrl-x`	Cut a Region of Text.
`Ctrl-c`	Copy a Region of Text.
`Ctrl-v`	Paste a Region of Text.
`Ctrl-z`	Undo / Redo the Last Change.
`Shift-left` or `Shift-Right` or `Shift-Up` or `Shift-Down`	Marks a region of text
`Delete`	While a region is highlighted, deletes that region

Other Important Key Bindings

`Ctrl-f` or `Ctrl-d`	Find/Open/Load File or Folder.
`Ctrl-x Ctrl-s`	Save Currently Edited File.
`Ctrl-x s`	Save Some Files (Yes or No Per File).
`Ctrl-x k`	Kill the Current File (Asks to confirm if the current file hasn’t been saved).
`Insert`	Electric Buffers Menu (Note: Buffer ≈ File). (Once you get used to it, you will wonder how you ever got by without it!) The `f12` key also does the same thing. One common usage of the Electric Buffers Menu is to toggle between the current and the next-to-current file using the key sequence `Insert Insert`. Note that the Buffers Menu at the top of the screen does a similar thing.
`Ctrl-s`	Incremental Search Forward.
`Ctrl-r`	Incremental Reverse Search.
`Alt-%` actually `Alt-Shift-5`	Search and Replace.
`Alt-/`	Automatically Complete Abbreviation. (Once you get used to it, you will wonder how you ever got by without it!)
`Esc Esc Esc` or `Ctrl-g`	Abort Current Command and Widen Narrowed Buffer.
`Ctrl-x Ctrl-q`	Quit Emacs (More simply just press the close button on the top right hand corner of the screen).

Function Key Bindings

`f1`	Online Help.
`f2`	Save All Buffers That You Are Currently Editing (No Questions Asked).
`f3`	Save and Delete Non-Essential Buffers (No Questions Asked). This is useful when you are editing a whole bunch of files and you wish to purge them all to disk.
`f4`	Widen (the opposite of `Ctrl-2` and `Ctrl-3`).
`f5`	Automatically Indent Whole Buffer (see tutorial 2).
`f6`	Opens a file using the Windows open file dialog box. This is the same as the key sequence `Ctrl-o`.
`f7`	Toggles the current file’s read-only status. Note that files in the `output` folder are set to be read-only by default. This device is intended to protect the user from editing files that they shouldn’t be editing. If you really want to edit a file that you shouldn’t simply press this key and it opens up the possibility of editing that file.
`f8`	Undo / Redo.
`f9`	Compile Using the Last Compile Command.
`Ctrl-f9` or `Alt-f9` or `Shift-f9`	Compile and Edit the Command Line.
`f11`	Auto Complete File Name. (Once you get used to it, you will wonder how you ever got by without it!)
`f12`	Electric Buffers Menu. (Once you get used to it, you will wonder how you ever got by without it!) The `Insert` key also does the same thing. One common usage of the Electric Buffers Menu is to toggle between the current and the next-to-current file using the key sequence `f12 f12`.

Miscellaneous Key Bindings

`Alt-u`	Change current word to uppercase.
`Alt-l`	Change current word to lowercase.
`Alt-c`	Capitalise current word.
`Alt-q`	Reformat paragraph to the width of the current value of the `fill-column` variable.

Cutting and Pasting Text I

`Ctrl-k`	Kill Line and Append to Last Kill.
`Ctrl-y`	Yank Last Kill.
`Alt-y` , immediately following `Ctrl-y`	Searched Killed Text. Each time you press this key it goes back one step through the "kill ring".
`Ctrl-Backspace` or `Alt-Backspace`	Backward Delete Word. (Once you get used to it, you will wonder how you ever got by without it!)
`Ctrl-Delete` or `Alt-Delete`	Forward Delete Word. (Once you get used to it, you will wonder how you ever got by without it!)

Cutting and Pasting Text II

`Ctrl-Space`	Set Mark.
`Alt-Space`	Pop Mark Off Stack.
`Ctrl-x Ctrl-x`	Swap Mark And Point.
`Ctrl-w`	Cut Region Between Mark and Point.
`Alt-w`	Copy Region Between Mark and Point.

Splitting and Merging Windows

`Ctrl-0`	Delete This Window.
`Ctrl-1` or `f4`	Delete All Other Windows.
`Ctrl-2`	Split Window Vertically.
`Ctrl-3`	Split Window Horizontally.
`Ctrl-Tab`	Other Window.

Navigating the Emacs Online "Info" Help System

Note that the Emacs Info help system is operated much like a web browser.

`n`	Next Info Page.
`p`	Previous Info Page.
`l`	Last Info Page (same as the back button on a web browser).
`r`	Same as the forward button on a web browser.
`d`	Returns to the Main Directory of All Info Pages, much like to home button on a web browser.

Useful Keys for Debugging HTML Documents

`Alt-;`	Toggle Tags (see tutorial 1).
`Ctrl-Left` or `Alt-Left` `Ctrl-Right` or `Alt-Right`	Find Matching Bracket < > ( ) [ ] { } (see Webdesign Tutorial 1).
`Alt-x testlinks Enter`	Debug Broken Links (see Webdesign Tutorial 2).
`TAB`	Automatically Indent Current Line (see Webdesign Tutorial 3).
`f5`	Automatically Indent Whole Buffer (see Webdesign Tutorial 3).
`Alt-x weblint Enter`	Run the external program weblint to debug HTML (see tutorial Webdesign Tutorial 3.)

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