key.hlp

来自「开放源码的编译器open watcom 1.6.0版的源代码」· HLP 代码 · 共 310 行

Keys, or How To Get Around in a Modal Editor
============================================
This editor is a mode-based editor.  When you are in command mode (the
default mode), there are a number of valid commands that may be entered.
Command mode may be entered at any time by pressing the ESC key.
 
When in insert mode, text may be entered.  Insert mode is entered via a 
number of different commands, and is indicated by a larger cursor (see 
"set insertcursortype" in cmd.hlp ).  While in insert mode, the following 
keys are valid:
  
UP,DOWN,LEFT,RIGHT (arrow keys) - move about through text
SHIFT_UP,SHIFT_DOWN,SHIFT_LEFT,SHIFT_RIGHT,
	SHIFT_HOME, SHIFT_END	- select text
CTRL_R				- start text selection
CTRL_DEL			- delete current line
SHIFT_DEL			- delete selected region
CTRL_INS			- paste before current position
SHIFT_INS			- paste after before current position
PAGEUP, PAGEDOWN                - move up/down a page in the text
ENTER                           - start a new line
HOME, END                       - move to the start/end of the current line
BS, DELETE                      - delete character
TAB, SHIFT-TAB                  - move up/back to the next/previous tab stop
CTRL_T,CTRL_D                   - move up/back to the next/previous shift-
                                  width stop.
CTRL_Q,CTRL_V                   - generates the character representing the
                                  the next key typed
 
As well, keys may be defined to perform macros, see the map command in
cmd.hlp.

Valid Commands
==============
The following commands may be entered while in command mode.  Some commands
may be prefixed by a repeat count (these are prefixed with a '*'). When 
entering a repeat count, a window pops up indicating the number you 
are typing.  

Text Marks
----------
Text marks are used to memorize a point in text that you may want to return
to later.  Each file may have up to 26 marks in it (identified via the
letters 'a' through 'z').
  
 m? - allows setting of mark ?.
 '? - move to start of line with mark ?.
 `? - move to mark ?.
  
A special case of mark setting, "m!", clears the marks on the current 
line.
  
`` and '' take you to the last position you were at before you used a 
non-linear movement command (',`,?,/,G, and a :n command).  
So, if you are at (5,10) and type /foo, pressing `` will first move 
you back to (5,10). Pressing `` again will move you to the occurance of 
foo, since the previous `` command was a non-linear movement command.
 
Text may be modified using marks, see "Text Manipulation".

One special character that may follow the "m" is a ".".  This puts
the editor in memorize mode (see the '.' command later on).

Text Buffers
------------
There are a number of text save buffers available.  There are 9 default
buffers that text is placed into when it is deleted/yanked.  The current
buffer may be selected using function keys, the defaults are to have
SHIFT_F5-SHIFT_F12 select buffers 1-8.  When a buffer is selected, 
information about its contents is displayed in the message window.
  
When text is yanked/deleted into the current buffer, the contents of the 
the buffers is cascaded forward from the current buffer into the next one,
with the last buffer losing its contents.
  
Text may be yanked/deleted into a specific buffer by typing "[1-9] before
the appropriate command. As well, the are 26 static buffers that may
be used, 'a'-'z'.  When text is yanked/deleted into a static buffer,
it remains there for the life of the editing session (or until replaced).
  
To retrieve the contents of a buffer, use:
  
 p  - place contents of current buffer after current position
 P  - place contents of current buffer before current position
  
Without a "? prefix, these commands retrieve the contents of the current
buffer.
 
To execute the contents of a buffer, as if the contents were typed from the
keyboard, use the @ command (see below).

Text Search
-----------
/ - enter a search string to search for from current position forwards
? - enter a search string to search for from current position backwards
n - repeat last search command, in the direction of the last search
N - repeat last search command, in the opposite direction of the last search
  
The following keys are recognized while typing a search string:
 
CTRL_O  - insert current command after current line in file
ALT_O   - insert current command before current line in file

CTRL_W  - adds current word in file to command string
CTRL_L  - adds current line in file to command string

TAB     - try to file name complete on the current string. There are two 
          methods:
          1) FileComplete2 NOT set:
               The first match is completed, and a window with possible
               choices is displayed. Subsequent presses of TAB will
               scroll forward through the list of possible matches, and
               pressing SHIFT_TAB will scroll backwards through the
               list of possible matches
                
          2) FileComplete2 set:
               As much of the file name that can be completed is, and
               a window is displayed with possible matches.  This window
               can be scrolled through by using UP/PAGEUP and DOWN/PAGEDOWN.
               Pressing TAB again will cause no result until additional
               characters (helping to uniquely identify the file name) are
               entered.

ALT_TAB - command completion. Looks backwards through history for
          first command starting with what is entered.  Subsequent
          presses of ALT_TAB get the 2nd last command, and so on

UP      - scroll forwards through command history
DOWN    - scroll backwards through command history
RIGHT   - move cursor right through command
LEFT    - move cursor left through command

CTRL_END- delete to end of command line
END     - move to end of command line
HOME    - move to start of command line

INSERT  - toggle text insertion/overstrike mode
DELETE  - delete character

ENTER   - process current command
ESC     - cancel current command

Text Insertion
--------------
 A  - append text at end of line
 a  - append text after current character
 I  - insert text at start of line
 i  - insert text at current character
 O  - open a new line above current line and begin text insertion
 o  - open a new line below current line and begin text insertion

Text Replacement
----------------
 R  - overtype on current line starting at current character
*r? - replace current character with ?
 
Character Deletion
------------------
 D  - delete rest of characters on line
*X  - delete previous character
*x  - delete current character

Text Movement 1
---------------
*|  - move column specified by repeat count
 `? - moves to specific mark position (line and column)
 '? - move to start of line with mark specified by ? (see Text Marks)
 %  - moves to matching brace or other defined match strings
 $  - move to end of line
 ^  - move to first non-white space on line
*;  - repeat last f,F,t,T movement
*,  - reverse last f,F,t,T movement
 0  - move to start of line
*B  - move backward to start of (space delimited) previous word 
*b  - move backward to start of previous word
*E  - move to the end of the next (space delimited) word.
*e  - move the the end of the next word
*F? - move backward to character ? on current line
*f? - move forward to character ? on current line
*h  - move left one character (also cursor left)
*j  - move down one line (also cursor down)
*k  - move down up line (also cursor up)
*l  - move right one character (also cursor right)
*T? - move backward to after character ? on current line
*t? - move forward to before character ? on current line
*W  - move forward to next (space delimited) word
*w  - move forward to next word

Text Manipulation
-----------------
The following commands manipulate text using the commands in
Text Movement 1 (TM1), using search commands ?,/,n,N, or
using an 'r' (uses selected region)
  
*c? - change characters.  If ? is from TM1, then text is deleted from
      the current cursor position to movement position, and then
      insert mode is entered. ? can also be a c, which causes 
      a change of the current line.
 
*d? - delete characters.  If ? is from TM1, then text is deleted from
      the current cursor position to movement position.
      ? can also be a d, which causes deletion of current line.
      dd may be prefixed with a repeat count. As well, d may be 
      prefixed by "?, which causes deleted text to be placed
      in the buffer ?.  Without such a prefix, deleted text is 
      placed into the current buffer.
  
*y? - yank characters.  If ? is from TM1, then text is yanked from
      the current cursor position to movement position.
      ? can also be a y, which causes yanking of current line.
      yy may be prefixed with a repeat count.  As well, y may be 
      prefixed by "?, which causes yanked text to be placed
      in the buffer ?.  Without such a prefix, yanked text is placed
      into the current buffer.
      
*!? - filter - takes lines, runs them through a specified dos command
      (the command must take input from standard in and put its output
      to standard out) and replaces the lines with the output of the
      the dos command.
      
*>? - shift characters - shifts data ShiftWidth characters to the right.
      ? may be from TM1 (commands for movement from line to line only).
      As well, >> may be used to shift the current line.
      
*<? - shift characters - shifts data ShiftWidth characters to the left.
      ? may be from TM1 (commands for movement from line to line only).
      As well, << may be used to shift the current line.
      
*~? - toggle case of characters.  If ? is from TM1, then text is toggled
      from the current cursor position to movement position.
      ? can also be a ~, which causes toggling of current line.
      ~~ may be prefixed with a repeat count.  
      
Text Movement 2
---------------
*G  - go to line specified by the repeat count.  No repeat count sends
      you to the end of the file.
*H  - go to line at the top of the current file window.
 M  - go to the line in the middle of the current file window.
*L  - go to the line at the bottom of the current file window.
*^B - move backwards a page (also PAGEUP)
*^D - move down 1/2 page.  If a number is typed, then that many lines
      is moved down from then on.
*^E - expose one more line below the current screen, leaving the cursor
      where it is if possible.
*^F - move forward a page (also PAGEDOWN)
*^Y - expose one more line above the current screen, leaving the cursor
      where it is if possible.
*^N - move to next line
*^P - move to previous line
*^U - move up 1/2 page.  If a number is typed, then that many lines
      is moved up from then on.
ENTER - move to start of next line
-   - move to start of previous line
+   - move to start of next line
 
Misc. Commands
--------------
  @?   - causes buffer ? (a-z or 1-9) to be executed as if the contents
  	 of the buffer were being typed at the keyboard. Special characters
	 \e,\n, and \x are allowed (see :map in cmd.hlp).
* z?   - causes the current screen to be redrawn, with the current line 
	 moved as follows:
	 ? = ENTER - top of screen
	 ? = . 	   - center of screen
	 ? = -	   - bottom of screen
	 if z is preceded by a count, then that line becomes the current
	 line.
  C    - change characters to end of line
* J    - join the next line to the current line
  Q    - enter EX mode; see cmd.hlp
* S    - substitute lines with text
* Y    - yank lines
 ^C    - quit editor (with a verification prompt if files have been modified)
 ^G    - display information about the current file
 ^L    - redraw screen
 ^V    - display current version
 ^X    - display hex value of character under cursor
 ALT_W - activate individual file menu
 ALT_X - insert a single character, using its numeric representation
         (replacement for ALT-numeric keypad). Either enter a decimal
         number or a hex number (preceded by an 'x', eg x4c )
* ^DEL - delete lines
 ^]    - go to the tag given by the current word. (see 'tag' in cmd.hlp)
 F1    - move forward through file list to next file
 F2    - move backwards through file list to previous file
 :     - enter a command line (see cmd.hlp)
 .     - repeat last command that changed text.  It is also possible to
 	 memorize more than just one command for '.', using memorize
	 mode.  Type "m." and the editor enters memorize mode, until
	 you press "." to end it.  Anything that you type while in
	 memorize mode will be repeated when you press ".".

Text Selection
--------------
Once text selection has been started, any movement commands add to
the selected region.   The selected region may be cleared by
pression the ESC key.

 ^R         - start a selection region, if not started.  if region
 	      is selected, cancel selected region
SHIFT_UP    - start selection (if not already started) and move up
SHIFT_DOWN  - start selection (if not already started) and move down
SHIFT_LEFT  - start selection (if not already started) and move left
SHIFT_RIGHT - start selection (if not already started) and move right
SHIFT_DEL   - delete selected region
SHIFT_INS   - paste last deleted area after current position
CTRL_INS    - paste last deleted area before current position
 _	    - simulates right mouse click.