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1.1 root 1:
2: Elvis 1.4 DIFFERENCES BETWEEN ELVIS & BSD VI/EX Page 7-1
3:
4:
5: E7. DIFFERENCES BETWEEN ELVIS & BSD VI/EXF
6:
7:
8: E7.1 ExtensionsF
9:
10: :mkexrc
11: :mk
12:
13: This EX command saves the current :set and :map configurations
14: in the ".exrc" file in your current directory.
15:
16: :Next
17: :previous
18: :N
19: :pre
20:
21: These commands move backwards through the args list.
22:
23: zz
24:
25: In visual command mode, the (lowercase) "zz" command will center
26: the current line on the screen, like "z=".
27:
28: .
29:
30: The default count value for . is the same as the previous
31: command which . is meant to repeat. However, you can supply a new
32: count if you wish. For example, after "3dw", "." will delete 3
33: words, but "5." will delete 5 words.
34:
35: ".
36:
37: The text which was most recently input (via a "cw" command, or
38: something similar) is saved in a cut buffer called ". (which is a
39: pretty hard name to write in an English sentence).
40:
41: K
42:
43: In visual command mode, you can move the cursor onto a word and
44: press shift-K to have Elvis run a reference program to look that
45: word up. This command alone is worth the price of admission! See
46: the ctags and ref programs.
47:
48: #
49:
50: In visual command mode, you can move the cursor onto a number
51: and then hit ## or #+ to increment that number by 1. To increment
52: it by a larger amount, type in the increment value before hitting
53: the initial #. The number can also be decremented or set by
54: hitting #- or #=, respectively.
55:
56: input
57:
58: You can backspace past the beginning of the line.
59:
60:
61:
62:
63:
64:
65:
66:
67:
68: Elvis 1.4 DIFFERENCES BETWEEN ELVIS & BSD VI/EX Page 7-2
69:
70:
71: The arrow keys work in input mode.
72:
73: If you type control-A, then the text that you input last time is
74: inserted. You will remain in input mode, so you can backspace over
75: part of it, or add more to it. (This is sort of like control-@ on
76: the real vi, except that control-A really works.)
77:
78: Control-P will insert the contents of the cut buffer.
79:
80: Real vi can only remember up to 128 characters of input, but
81: Elvis can remember any amount.
82:
83: The ^T and ^D keys can adjust the indent of a line no matter
84: where the cursor happens to be in that line.
85:
86: You can save your file and exit Elvis directly from input mode
87: by hitting control-Z twice.
88:
89: Elvis supports digraphs as a way to enter non-ASCII characters.
90:
91: :set inputmode
92: :se im
93:
94: If you set this flag in your .exrc file, then elvis will start
95: up in input mode instead of visual command mode.
96:
97: :set charattr
98: :se ca
99:
100: Elvis can display "backslash-f" style character attributes on
101: the screen as you edit. The following example shows the recognized
102: atributes:
103:
104: normal \fBboldface\fR \fIitalics\fR \fUunderlined\fR normal
105:
106: NOTE: you must compile elvis without the -DNO_CHARATTR flag for
107: this to work.
108:
109: :set sync
110: :se sy
111:
112: After a crash, you can usually recover the altered form of the
113: file from the temporary file that Elvis uses. With the sync option
114: turned on, the odds are shifted a little more in your favor because
115: Elvis will perform a sync() call after each change has been written
116: to the temporary file.
117:
118: cursor shape
119:
120: Elvis changes the shape of the cursor to indicate which mode
121: you're in, if your terminal's termcap entry includes the necessary
122: capabilities.
123:
124: :set hideformat
125: :se hf
126:
127:
128:
129:
130:
131:
132:
133:
134: Elvis 1.4 DIFFERENCES BETWEEN ELVIS & BSD VI/EX Page 7-3
135:
136:
137: This option hides format control lines. (They are displayed on
138: the screen as blank lines.)
139:
140: :errlist
141: *
142: elvis -m
143:
144: Elvis is clever enough to parse the error messages emitted by
145: many compilers. To use this feature, you should collect your
146: compiler's error messages into a file called "errlist"; elvis will
147: read this file, determine which source file caused the error
148: messages, start editing that file, move the cursor to the line
149: where the error was detected, and display the error message on the
150: status line. Nifty!
151:
152:
153: E7.2 OmissionsF
154:
155: The replace mode is a hack. It doesn't save the text that it
156: overwrites.
157:
158: Long lines are displayed differently -- where the real vi would
159: wrap a long line onto several rows of the screen, Elvis simply
160: displays part of the line, and allows you to scroll the screen
161: sideways to see the rest of it.
162:
163: The ":preserve" and ":recover" commands are missing. So is the
164: -r flag. I've never had a good reason to use ":preserve", and
165: since ":recover" is used so rarely I decided to implement it as a
166: separate program. There's no need to load the recovery code into
167: memory every time you edit a file, I figured.
168:
169: LISP support is missing.
170:
171: Due to naming conventions used for the temporary files, Elvis
172: can be creating no more that one new file per directory at any
173: given time. Any number of existing files can be edited at the same
174: time on multitasking computer systems, but only one new file can be
175: created simultaneously per directory. To relieve this problem, you
176: would have to edit tmp.c and virec.c This is expected to be done in
177: version 1.5
178:
179: Autoindent mode acts a little different from the real vi. It is
180: still quite useful, but if you frequently use both vi and elvis
181: then the differences may be annoying. Autoindent is -1gradually-0
182: improving.
183:
184: The visual "put" command cannot be repeated by hitting the .
185: key.
186:
187:
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