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| The emacs editor is perhaps the most powerful editor available. It runs under Unix, Linux, Macintosh, and Windows. It is highly customizable, and is even programable. Emacs comes with hundreds of modes and thousands of commands. The following list represents a tiny |
| set of commands to help get you started. |
| The emacs editor is perhaps the most powerful editor available. It runs under Unix, Linux, Macintosh, and Windows. It is highly customizable and programmable. Emacs comes with hundreds of modes and thousands of commands. The following list represents a tiny set of commands to help get you started. |
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| In what follows, "^x" would mean pressing the "x" key while the control key is held. "^x^f" would mean press "xf" while holding the control key down. "^xs" means press the "x" key while the control key is held, and then hit the "s" key after releasing the control key. The control key acts like the shift key in that it modifies the affect of the other key pressed. |
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| |^x ^f|read a file into an emacs buffer |
| |^x ^s|save a the buffer currently being edited to the original file |
| |^x ^f|read a file into a new emacs buffer |
| |^x ^s|save the buffer currently being edited to the original file |
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| |^x i|insert a file at current location |
| |^x i|insert a file at the current location (^x-eye) |
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| !!Motion |
| !!Cursor Motion |
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| |^a | beginning of line |
| |^e | end of line |
| |^f | forward a character |
| |^b | back a character |
| |^n | next line |
| |^p | previous line |
| |^a | beginning of the line |
| |^e | end of the line |
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| !! Scrolling (screen motion) |
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| |^v or PgDn|Scroll down |
| |Esc-v or PgUp|Scroll up |
| |Esc 0^l|Current line to top of screen (Esc zero Ctl-ell) |
| |Esc ^l|Current line to middle of screen (Esc Ctl-ell) |
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| | Ctl-Shft-Bksp | delete line |
| | Ctl-Shft-Bksp | delete the whole line |
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| Consecutive undo's via consecutive ^/ |
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| To redo, type anything except a ^/ The following ^/ will redo. |
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| | ^u ^space | go to previous mark |
| | ^u ^space | go to the previous mark |
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| Unlike other editors, rather than a single cut / paste buffer where only a single item can be cut and paste at a time, |
| emacs remembers all cuts and copies so that you can paste the last cut or any prior one. |
| Unlike other editors, rather than a single cut / paste buffer where only a single item can be cut and paste at a time, emacs remembers all cuts and copies so that you can paste the last cut or any prior one. |
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| Incremental search differs from a typical search feature in that it starts the search with the first character and |
| refines the search as you type each subsequent character in the search. This way one may find what one is looking for |
| as soon as possible without typing any more characters than necessary. |
| Incremental search differs from a typical search feature in that it starts the search with the first character and refines the search as you type each subsequent character in the search. This way one may find what one is looking for as soon as possible without typing any more characters than necessary. |
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| | ^g | abort search |
| | ^g | abort the search |
| | Esc-^s | incremental search forward with regular expressions |
| | Esc-^r | incremental search backward with regular expressions |
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| Emacs's regular expression syntax corresponds to grep's extended regular expression syntax. See [grep] |
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| | ^x^kbX | bind the last keyboard macro to the sequence ^x^kX (where X is any number or upper-case letter) |
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| !!Repeating |
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| All emacs command may be executed any number of times by preceding the command as follows: |
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| | Esc N cmd | repeat command cmd N times |
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| This is especially useful with keyboard macros in order to repeat a sequence many times. |
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| Emacs has the ability to save and name any number of locations and text that has been cut or copied. Each location or block of text is saved |
| in a register. Registers are simply variables with single character names. The name used is up to you. Emacs will ask you for the name. |
| Emacs has the ability to save and name any number of locations and text that has been cut or copied. Each location or block of text is saved in a register. Registers are simply variables with single character names. The name used is up to you. Emacs will ask you for the name. |
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| !!Repeating |
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| All emacs command may be executed any number of times by preceding the command as follows: |
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| | Esc N cmd | repeat command cmd N times |
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| | ^h i | access the embedded emacs manual |
| | ^h i | info - access the embedded emacs manual |
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| | ^h b | describe bindings - explain all current keyboard bindings |
| | ^h m | describe mode - explain all facilities for the current file type mode |
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| !! Tags |
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| Emacs comes with a program named “etags” that is used to create tag files. |
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| Tag files are named “TAGS” |
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| You can run etags in several directories producing one big tag file representing the whole project. |
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| Usage: {{{etags [-o OUTFILE] [-a] *.c *.h}}} |
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| | Esc-x visit-tags-table | read a TAGS file |
| | Esc-. | find tag |
| | ^u-Esc-. | find next tag |
| | Esc-* | go back to where tag was searched |
| | Esc-Tab | symbol completion |
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| | ^x-^space | go back to previous location |
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