The power of TED lies in its capability to manipulate multiple lines of text. It can manipulate the text of any ACCENT R object that contains line-numbered statements. When this editor is invoked for an un-sequenced System File (SF), line numbers are automatically assigned.
TED provides a variety of editing commands used to establish and change statements of all those ACCENT R objects that are defined with the DEFINE command. The DEFINE, MODIFY and EDIT commands cause ACCENT R to enter an interactive environment called the edit level. In that environment, use TED editing commands to enter, display, change, or save statements while defining or modifying an ACCENT R object. At the edit level, a double-hyphen prompt (--) is displayed at the terminal to indicate that ACCENT R is ready to accept an editing command or text.
The TED editing commands are discussed in this chapter in alphabetical order. They are listed below with their minimum abbreviations underlined.
|
Command |
Function |
|
ALTER |
invokes SLIM on existing line(s) |
|
COPY |
copies existing line(s) |
|
DELETE |
removes line(s) |
|
EDIT |
invokes external editor if one specified in @EDITOR, otherwise SLIM is invoked on existing line(s) |
|
FIND |
locates specific text |
|
HOLD |
stores current line(s) |
|
INSERT |
allows new line(s) to be entered |
|
MOVE |
moves line(s) |
|
NUMBER |
renumbers line(s) |
|
|
display line(s) |
|
REPLACE |
replaces line(s) |
|
SAVE |
compiles and saves line(s) |
|
STOP |
leaves the edit level without compiling |
|
STRUCTURE |
accesses a Schema Definition |
|
SUBSTITUTE |
changes multiple occurrences of specific text |
|
UP |
moves to preceding line |
|
USE |
reads a specified System File |
ACCENT R provides two ways to enter new lines.
First, use the INSERT editing command, which prompts for new text by supplying the line numbers (see discussion of INSERT later in this chapter).
Second, enter new lines by typing a line number and the line of text.
Type the lines in any numerical order, and ACCENT R puts them into ascending numerical sequence.
NOTES: If typing the number of an existing line, ACCENT R will replace the old line with the new line that is entered.
TED provides several editing commands for changing existing lines. The following list points out the differences of these editing commands. See the following pages for detailed discussion of each editing command.
|
Command |
Function |
|
ALTER |
invokes SLIM for line image editing. |
|
EDIT |
invokes the external editor if one is specified in @EDITOR, otherwise, SLIM is invoked for line image editing; same as ALTER. To invoke SLIM a line number must be specified. |
|
REPLACE |
deletes old lines; prompts for insertion of new lines by displaying replacement line numbers. |
|
SUBSTITUTE |
replaces a given string wherever it occurs in specific lines. |
It is possible to replace a line by typing its number and the new text.
Many TED editing commands allow one line, a range of lines, or up to ten line ranges to be addressed. The following form applies to all editing commands that allow line addressing.
Line addressing can be specified in any of the following ways:
Actual line number, preceding zeros not required.
A period (.) to signify the current line.
An asterisk (*) to signify the last line of the file.
.+n where n is the number of lines following the current line.
.-n where n is the number of lines preceding the current line.
The default line range is 1:* unless specified otherwise.
Where several individual line addresses or line address ranges are allowed, the general form shows the line address specification enclosed in back slashes. In these cases, up to ten line addresses and/or ranges of addresses can be used. They are separated by commas. For example, if the general form contains
\\addr1 [:addr2]\\
the following groups of line addresses could be entered:
5,10:50,70,90,200:270
.:*
10,20:90,.:.+5,*
When using a number to address a particular line, an existing line number must be specified. However, if specifying a range, or if using a single line number as a destination pointer, line numbers that don’t exist can be used. For example, if editing a Process Module (PM) that includes lines 10, 20, 30, 40, 50, 60, 70, any of the following line specifications are acceptable:
PRINT 60:79
DELETE 15:35
EDIT 20
MOVE 20:40 TO 55
The following pages explain the TED editing commands. These commands generate and alter statements from ACCENT R objects (which are created with the DEFINE command).