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Allows the user to edit and reexecute any command still retained
in the command line history stack. (Native Mode) Parameters | |
- cmdid
Specifies the command to execute. The command may
be specified by its relative or absolute order in the command line
history stack, or by name (as a string). The default is -1, the
most recent command. The following Table 6-2 “Re-execute Directives for the REDO Command” illustrates
the result of using various forms of the cmdid
parameter.
Table 6-2 Re-execute Directives for the REDO Command | cmdid | Executes |
|---|
| (omitted) | Previous command (same as REDO -1). | | -n | The nth command before
the most recent one. The n represents a number
in the command line stack relative to the most recent command, which
is -1. | | m | Command number m in the
command line stack. The number m is absolute
(not relative). | | string | The most recent command beginning with string. |
MPE/iX detects an error if you specify a cmdid
that cannot be found in the history stack. - editstring
A string specifying the first (of one or more) edit(s)
to be performed on cmdid before it is displayed
on the standard listing device ($STDLIST). When the (edited) command line is displayed, you may edit
the line interactively. REDO
displays the command line and accepts further edits repeatedly,
until you signal completion by entering a Return
only. At this point, the CI executes the edited version of the command. If you omit editstring, then you
are given the opportunity to edit the command line interactively,
after which the command is reexecuted. If you specify editstring, it must
appear, character for character, and space for space, exactly as
it would if you were using the REDO
command in interactive mode. The edit string must be surrounded by quotation marks (" ")
if it contains any scanner/parser delimiters such as: , ; " ' [ ]
or = or spaces.
Operation Notes | |
REDO executes
the command specified as cmdid. The user may
specify an optional editstring that edits
the command before it is reexecuted. This command is a companion
to the MPE/iX DO
command. Unlike the DO
command, the REDO
command does permit interactive editing. If editstring is specified, the edit
is performed on cmdid before the command is
presented for interactive editing. If editstring
is omitted, then editing is interactive. In either case, the (edited) line is echoed to $STDLIST
before it is reexecuted. At this point, you may edit the line interactively.
The interactive (editing) mode, remains available to you until you
press only Return. Both cmdid and editstring
must be surrounded by either single or double quotation marks if
they contain any delimiters such as , ; " " [, ], =,
or a space. The editing directives used in editstring
are defined in Table 3-5 “Editing Directives for the DO Command”. . Table 6-3 Editing
Directives for the REDO Command | Directive | Effect |
|---|
| i | INSERT.
If text follows the i,
the text following i
is inserted in the current line at the position after the i. | | r | REPLACE.
If text follows the r,
the text following r
replaces the same number of characters in the current line, beginning
at the position of r. | | d | DELETE.
Deletes a character from the current line for each specified in
the edit line. Note that "d d"
does not specify a range but simply deletes one character from the
position above each d.
Multiple d's
may be followed by an insert or replace operation. | | dw | DELETE WORD.
Deletes a word starting at the letter d.
A word is defined as all characters except a space, comma, or semicolon.
If you place the d
directly beneath a word delimiter, then the word and the delimiter
characters are deleted. If no word exists on the command line, no
delete occurs. You may follow this directive with other edits. | | ddelim | DELETE TO DELIMITER.
Deletes all characters starting at the position of the d
and ending at, but not including, the specified delimiter. If delim
is not found, no delete occurs. You may follow this directive with
other edits. | | d> | DELETE TO EOL.
Deletes to the end of the current line from the position specified
by d>. It may
be followed by an INSERT
or REPLACE operation. | | ^ | UPSHIFT.
Upshifts the character positioned at the ^. You may specify multiple
^ characters
to upshift a series of characters. Or, you may type multiple ^
characters, followed by spaces, then followed by more ^'s
to upshift some characters while skipping others. You may follow
this directive with other edits. | | ^w | UPSHIFT WORD.
Upshifts the word starting at the position specified by ^.
A word is defined as all characters except a space, comma, or semicolon.
If you place the ^
directly beneath a word delimiter, the delimiter is skipped and
only the word is upshifted. If no word exists on the command line,
no upshift occurs. You may follow this directive with other edits. | | ^delim | UPSHIFT TO DELIMITER.
Upshifts all characters starting at the position specified by the
^ and ending
at, but not including, the specified delimiter. If delim
is not found, no upshift occurs. You may follow this directive with
other edits. | | ^> | UPSHIFT TO EOL.
Upshifts all characters starting from the position specified by
the ^ to the
end of the current line. You may follow this directive with other
edits. | | v | DOWNSHIFT.
Downshifts the character positioned at the v.
You may specify multiple v's
to downshift a series of characters. Or, you may type multiple v's,
followed by spaces, then followed by more v's
to downshift some characters while skipping others. You may follow
this directive with other edits. | | vw | DOWNSHIFT WORD.
Downshifts the word starting at the position specified by v.
A word is defined as all characters except a space, comma, or semicolon.
If you place the v
directly beneath a word delimiter, the delimiter is skipped and
only the word is downshifted. If no word exists on the command line,
no downshift occurs. You may follow this directive with other edits. | | vdelim | DOWNSHIFT TO DELIMITER.
Downshifts all characters starting at the position of the v
and ending at, but not including, the specified delimiter. If delim
is not found, no downshift occurs. You may follow this directive
with other edits. | | v> | DOWNSHIFT TO EOL.
Downshifts all characters starting from the position specified by
the v to the
end of the current line. You may follow this directive with other
edits. | | >text | APPEND.
The > followed
by text appends the text to the end of the current line. If >
is positioned beyond the end of the current line, then a replacement
is performed instead. | | >d | DELETE FROM EOL.
Deletes from the end of the current line, right-to-left. Multiple
d's may be specified
after >, as well
as INSERT and
REPLACE strings. | | >dw | DELETE WORD FROM EOL.
Deletes the last word in the command line. To find the last word,
trailing word delimiters are skipped. If no word exists in the command
line, then none is deleted. If you follow >dw
with additional editing directives, each edit is performed recursively.
That is, the first edit is performed (updating the current EOL),
then the next edit is performed (again updating the current EOL),
and so on. | | >ddelim | DELETE TO DELIMITER FROM EOL.
Starting at the end of the current line, deletes all characters
right-to-left up to, but not including, delim.
If the delimiter is not found, no delete occurs. If you follow this
directive with additional editing directives, each edit is performed
recursively. That is, the first edit is performed (updating the
current EOL), then the next edit is performed (again updating the
current EOL), and so on. | | >^ | UPSHIFT FROM EOL.
Upshifts the character at the current EOL. You may specify multiple
^'s to upshift
a series of characters (read right-to-left) from the EOL. Also,
you may follow this directive with other edits. | | >^w | UPSHIFT WORD FROM EOL.
Upshifts the last word in the command line. You may follow this
directive with other edits. | | >^delim | UPSHIFT TO DELIMITER FROM EOL.
Starting at the end of the current line, upshifts all characters
right-to-left up to, but not including, delim.
If the delimiter is not found, no upshift occurs. You may follow
this directive with other edits. | | >v | DOWNSHIFT FROM EOL.
Downshifts the character at the current EOL. You may specify multiple
v's to downshift
a series of characters (read right-to-left) from the EOL, and you
may follow this directive with other edits. | | >vw | DOWNSHIFT WORD FROM EOL.
Downshifts the last word in the command line. You may follow this
directive with other edits. | | >vdelim | DOWNSHIFT TO DELIMITER FROM EOL.
Starting at the end of the current line, downshifts all characters
right-to-left up to, but not including, delim.
If the delimiter is not found, no downshift occurs. You may follow
this directive with other edits. | | >rtext | REPLACE.
Replaces characters at the end of the command
line. The replacement is done so that the last (rightmost) character
of the replacement string is at the end of the line. | | c | CHANGE.
Changes all occurrences of one string to another in the current
line when the search string and replace string are properly delimited.
A proper delimiter is a nonalphabetic character (such as ',
", /
or ,). The substitution
is specified as: c<delim>
search-string<delim>
[replace-string [<delim>]].
Omitting the replace-string causes occurrences
of search-string to be deleted, with no substitution. | | u | UNDO.
A single u in
column one cancels the most recent edit of the current line. Using
the UNDO command
twice in a row cancels all edits for the current line and reestablishes
the original, unedited line. If u
is placed anywhere other than column one of the current line, then
a simple replacement is performed. UNDO
makes sense only if you have a line on which you have performed
some editing that can be "undone." | | other | Simple replacement. Any other character (not
i, r,
d, d>,
>, >d,
c, or u)
causes that character to be replaced in the current line at the
position indicated by the character. In fact, simple replacement
also occurs for the editing characters i,
r, c,
or > if they
are not followed by text; or if >
appears at or beyond the current end of line. |
Editing Samples | |
The Table 6-4 “REDO Editing Samples” shows examples
of using the REDO
command. Table 6-4 REDO Editing Samples | Edit | Action |
|---|
| u | First occurrence undoes the previous edits.
The u must be
in column one. | | u | Second occurrence undoes all edits on the current
line. The u must
be in column one. | | rxyz | Replaces the current text with xyz
starting at the position of r. | | xyz | Replaces the current text with xyz
starting at the position of x. | | ixyz | Inserts xyz
into the current line, starting at the position immediately before
the i. | | ddd | Deletes three characters, one above each d. | | d xyz | Deletes a single character above the d,
skips one space, then replaces the current text with xyz
starting at the position of x. | | ddixyz | Deletes two characters, then inserts xyz
in the current line in the position before the i. | | d d | Deletes one character above the first d,
skips two spaces, and deletes a second character above the second
d. It does not
delete a range of characters. | | d d>xyz | Deletes a single character above the first
d, skips two
spaces, and deletes to the end of the line beginning at the second
d, and then appends
xyz to the end
of line. | | >xyz | Appends xyz
to the end of the current line. | | >ddxyz | Deletes the last two characters from the end
of the current line and then appends xyz
to the end of the line. | | >rxyz | Replaces the last three characters in the current
line with xyz. | | >ixyz | Appends xyz
to the end of the line. In this case, the i
command is superfluous, because >
accomplishes the same result. Using >xyz
would be sufficient. | | c/ab/def | Changes all occurrences of ab
to def, starting
at c. | | c"ab" | Deletes all occurrences of "ab"
starting at c. | | cxyz | Replaces the current text with cxyz,
starting at c.
Because delimiters have been specified (as they were in the previous
two examples), this is a simple replacement. | | ^wix | Upshifts the word above the ^
and inserts an "x" at the end of the word it just upshifted. | | v/abc | Starting at the position of v,
downshifts all characters up to, but not including, the "/", then
replaces the "/" and the next two characters with "abc". | | >dw^.dw | Deletes the last word in the current line,
recalculates the EOL, then upshifts all characters up to, but not
including, the dot (.), then deletes the word to the left of the
characters that were upshifted. |
Use | |
This command is available in a session or in BREAK. It is
not available in a job or from a program. Pressing Break
aborts the execution of this command. Examples | |
The following are examples of editing options for the REDO
command: - REDO PAS
Edits the most recent command beginning with the
string PAS. - REDO 10
Edits command number 10 (absolute) on the command
history stack. - REDO -2
Edits the second-to-last command on the stack (one
command before the most recent).
Related Information | |
- Commands
DO,
LISTREDO - Manuals
Using the HP 3000 Series 900: Advanced
Skills
|
