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diff --git a/emacs.d/nxhtml/etc/viper-tut/5tricks b/emacs.d/nxhtml/etc/viper-tut/5tricks new file mode 100644 index 0000000..c1e414e --- /dev/null +++ b/emacs.d/nxhtml/etc/viper-tut/5tricks @@ -0,0 +1,229 @@ +Viper tutorial #5: Tricks and Timesavers + +This lesson lasts 10-15 minutes. You should have a strong +understanding of tutorials #1-3 before working through these timesaving +techniques. Lines which begin with >>> mark exercises you should +try. When you want to exit this tutorial type 'Z''Z' . + + +CASE CONVERSION +--------------- +When you want to change an upper-case character to a lower-case +character (or lower-case to upper-case) there is a single command which +does both: + + '~' (tilde) Convert case of current character + +>>> Move the cursor to be OVER the first character in the example +>>> line below. Press '~' until you have changed the case of the +>>> entire line. ( '~' will advance to the right automatically). + + bOB WENT TO pARIS, fRANCE, TO SEE THE #1 CYCLING EVENT. end. + +Note that '~' only affects alphabetic characters. + + +UNDOING +------- +* EMACS-NOTICE: Uppercase U does the same thing as lowercase u in + Viper so this part of the tutorial which was about U has been + removed. + + +REPEAT LAST COMMAND +------------------- +Often you want to make the same change at multiple locations in the +file. To help accomplish this, vi remembers your previous action. + + '.' (dot) repeat last change + +>>> Go through the example below changing "FISH" to "TOAD": +>>> Go to the "F" in the first instance of "FISH" +>>> To change the word: type 'c''w' then type TOAD then press ESC +>>> Move the cursor to "F" in the second occurence of "FISH" +>>> Type '.' (dot) +>>> Move the cursor to "F" in the final occurence of "FISH" +>>> Type '.' (dot) +>>> Now move the cursor to each occurence of "CROW"; Type '.' (dot) + + EXAMPLE: The FISH fed the cat. The CROW fed the cat. Example + text is FISH to make interesting. The man fed the CROW. The + worm fed the FISH. Example text is hard to make CROW. END. + +>>> Go through the example above deleting all occurences of "TOAD": +>>> Move to the beginning of the EXAMPLE paragraph above. +>>> Type '/''T''O''A''D' and press RETURN (recall tutorial #2) +>>> Delete the word by typing 'd''w' +>>> Type 'n' to move to the next occurence of "TOAD" +>>> Type '.' (dot) to repeat the dw command +>>> Use 'n''.' to delete the remaining "TOAD"s + +Note that '.' only repeats changes, not cursor movements. + +* EMACS-NOTICE: In Emacs '.' also repeat undo and redo. + +* EMACS-NOTICE: Emacs KEYBOARD-MACROS are very powerful for repeating + whole sequences of keyboard commands. + + +WINDOW ACTIONS +-------------- +You are already familiar with the C-u (depress the control key and +type u) and C-d commands from tutorial #1. + + C-d Move DOWN one half-screen + C-u Move UP one half-screen + +There are several related commands: + + C-f Move FORWARD one full-screen + C-b Move BACKWARD one full-screen + + C-e Move the window down one line without moving cursor + C-y Move the window up one line without moving cursor + +The C-e and C-y commands may seem obscure; however, notice that on +the keyboard, e and y are close to d and u respectively. This +should help you remember that C-e moves DOWN, and C-y moves UP. + +Recall the 'H' 'M' 'L' (HIGH MIDDLE LOW) window commands from Tutorial 2. +Consider a scenario where you want to yank from the current line to a +line near the top of the window. You could use C-e and C-y to +position the text in the window before you use the yH command. + +The 'z' command also moves the window without moving your cursor: + + 'z'<RETURN> Position the current line to top of window + 'z''.' Position the current line to middle of window + 'z''-' Position the current line to bottom of window + +>>> Move to this line. Type 'z' and press RETURN. Notice that +>>> this text and the cursor have moved to the top of the window. +>>> Try 'z''-' and 'z''.' also. + + +FILE AND DISPLAY CONTROL +------------------------ + +* EMACS-NOTICE: In vi C-g shows the status of the current file, but + C-g in Emacs in most situation stops what Emacs is doing. To get + information about the current file you can use C-c C-g instead when + Viper is in vi state. + +* EMACS-NOTICE: In vi C-l refreshes the screen, but C-l in Emacs calls + the command recenter. + + +SUSPENDING VI +------------- +* EMACS-NOTICE: In vi C-z suspends vi. However in Viper C-z is by + default the VIPER-TOGGLE-KEY. To suspend or iconify Emacs use C-x + C-z. + + +BANG COMMAND +------------ +* EMACS-NOTICE: Emacs has builtin commands to sort etc. + +The exclamation point, '!' (aka BANG), command allows you to feed text +to any Unix command. The output of the Unix command replaces the +original text. Here is a useful Unix command to use from within vi: + + !}fmt Format the paragraph, joining and filling lines to + produce output lines of up to 72 characters + +>>> Move to the example paragraph below. Type !}fmt and press +>>> RETURN. Notice the paragraph will be reformatted such that +>>> the lines are of approximately equal length. + + EXAMPLE: + So we grow together, + Like to a double cherry, seeming parted, + But yet an union in partition; + Two lovely berries moulded on one stem; + So, with two seeming bodies, but one heart; + END. + +Another useful command is: + + !}sort Sort lines of a paragraph alphabetically + +>>> Move to the example text below. Type !}sort and press RETURN. + + OBERON king of the fairies. + PUCK or Robin Goodfellow. + HERMIA daughter to Egeus, in love with Lysander. + HELENA in love with Demetrius. + LYSANDER in love with Hermia. + DEMETRIUS in love with Hermia. + +Remember, any Unix command may be used this way. + + +SHIFTING TEXT +------------- +It is possible to shift large blocks of text right and left with the '>' +and '<' commands. + + '>'movement Shift right to where the movement command specifies + '<'movement Shift left to where the movement command specifies + +These commands work like the 'd' command. For example: + + '>''}' Shift right to the end of the paragraph + '<''}' Shift left to the end of the paragraph + '>''>' Shift the current line right + '<''<' Shift the current line left + +>>> Move the cursor to the first line of the paragraph below. +>>> Type '>''>' and '<''<' to shift the line back and forth. Next +>>> try '>''}' to shift the paragraph to the right, then '<''}' to shift +>>> it left, then type '.' until all four lines start at the left edge. + + THIS IS THE FIRST LINE OF EXAMPLE TEXT + IS + EXAMPLE + TEXT END + + +SUMMARY +------- + + '~' (tilde) Convert case of current character + + 'U' * EMACS-NOTICE: Same as lowercase u undo in Viper. + + '.' (dot) repeat last change + + C-d Move DOWN one half-screen + (depress the control key and type d) + + C-u Move UP one half-screen + (depress the control key and type u) + + C-f Move FORWARD one full-screen + C-b Move BACKWARD one full-screen + + C-e Move the window down one line without moving cursor + C-y Move the window up one line without moving cursor + + 'z'<RETURN> Position the current line to top of window + 'z''.' Position the current line to middle of window + 'z''-' Position the current line to bottom of window + + C-c C-g Show status of current file + C-l Recenter + + '!'}fmt Format the paragraph, joining and filling lines to + produce output lines of up to 72 characters + + '!'}sort Sort lines of a paragraph alphabetically + + '>'movement Shift right to where the movement command specifies + '<'movement Shift left to where the movement command specifies + + +These commands should significantly speed up your editing. Have a nice +day. Tutorial 6 contains even more nifty commands. + +Copyright (c) 1992 Jill Kliger and Wesley Craig. All Rights Reserved. |