TACL Reference Manual

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Built-In Functions and Variables

HP NonStop TACL Reference Manual—429513-018

9-129

#DELTA Built-In Function

If the search string is not found, #DELTA issues an error message and, if the #DELTA

session is not interactive, #DELTA exits. The pointer does not move. You can use the :

flag to enable your #DELTA code to handle search errors-if the string is found, the X

You can also use S with FL to do text replacement.

The T Command

The T command displays a range of text, the contents of a variable level, or a user-

specified string.

The range of text can be specified either with an X register value or with X and Y

To display the contents of a variable level, use the @ flag with the T command. The T

command must be immediately followed by the variable level name; the variable level

name must be terminated by a dollar sign.

For example:

60> #PUSH TEST

61> #SET TEST Test string in a variable

62> #DELTA

#DELTA 63> @Ttest$

#DELTA 63> EOF!

Test string in a variable

#DELTA 64>

You can use the : flag to direct the T command to display a text string. The text follows

the T command and must be terminated with a dollar sign. If the text contains a dollar

sign, you can use the @ flag to specify the string delimiter. The delimiter is the first

character after the T command. In this example, the first :T command uses the dollar

sign terminator; the second :T command types out a string that contains a dollar sign,

so it uses the @ flag to specify a different terminator:

#DELTA 64> :TParsing string...$

#DELTA 64> EOF!

Parsing string...

#DELTA 65> @:T/Couldn't open $GERT.STEIN.NEWMACS/

#DELTA 65> EOF!

Couldn't open $GERT.STEIN.NEWMACS

#DELTA 66>

The U Command

The U command moves the value in the X register into a numeric variable level,

consisting of one line, the text of which is the ASCII representation of a number. The

variable level name must be terminated by a dollar sign.

The U command stores the value of the X register in the variable level, stores the Y