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Added additional section on arithmetic expressions

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Bradford Hovinen (Gdict maintainer) 2000-08-08 14:42:37 +00:00
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capplets/screensaver/screensavers/README
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@ -85,5 +85,25 @@ given option is selected, the ids listed for all other <option>'s will
be disabled before the ids listed for the selected <option> are
enabled.
4. Boolean and arithmetic expressions
These are used in two places: the "test" attribute and two other
attributes used to perform basic arithmetic manipulation on arguments
before writing them to the command line. The syntax is similar to most
programming languages, with `=' being the equality test. The words
`and', `or', and `not' are used as boolean connectives. Identifiers
are interpreted as the values associated with arguments on the command
line if they are present; arguments without values are given the
boolean value true. Identifiers not present on the command line are
interpreted as literal strings.
The attributes "from-cli-conv" and "to-cli-conv", when placed in a
<number> element, convert values from those present on the command
line to those in the dialog and vice versa, respectively. They are
arithmetic expressions interpreted in the normal way, with the literal
"var" replaced by the value to be converted. This can be used, for
example, when converting the value of the "-delay" argument to a more
meaningful value for speed.
Copyright (C) 2000 Helix Code, Inc.
Written by Bradford Hovinen <hovinen@helixcode.com>