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- Usage: ASSIGN [[-]<user-variable> [<whatever>]]
- ASSIGN lets you create user variables which are automatically
- expanded by ircII in aliases using the $variable-name format.
- For example, if you had defined:
- ASSIGN me The Big Cheese
- Then, in an alias, $me would expand to "The Big Cheese". These
- are straight textual substitutions. You can use these kind
- of variables as counters and indexes into lists as well. For
- example:
- ASSIGN index 0
- ASSIGN index ${index+1}
- The first line sets "index" to 0, the seconds increments index by 1.
- Note that the second will always be expanded if used in another
- alias (where $ are normally expanded). If you want it to be
- expanded if typed at the input line, you must first set
- INPUT_ALIASES to ON.
-
- Note: In the above example, the mathematical expression must be
- enclosed by {}'s otherwise the + would be treated as an alias
- delimiter and the addition not performed. (See @ as well)
-
- Suppose now you wanted to use index to get a single word in a list,
- you could do:
- ALIAS WORD ECHO $($index)
- Then doing:
- WORD This is a test
- would display the index'th word in the list.
- The $($index) format does the following: it parses the text
- between the () as a sub-alias. The "$index" is thus evaluated
- and returns it's value. This value is then replaced for the ()
- expression and evaluated. So, if you had:
- ASSIGN index 1
- Then, the following would be evaluated:
- $index becomes 1 which given
- $(1) which becomes simply $1
- Thus the $1 argument is used.
- This functionality can be nested. This the following:
- ASSIGN A Hey You!
- ASSIGN B A
- ASSIGN C B
- ALIAS NESTING echo $($($C))
- will cause NESTING to display "Hey You!"
-
- The following format are also legal:
- $#name evaluates to the number of words in name
- $@name evaluates to the number of characters in name
- You can use these with the mathematical expressions as well,
- for example:
- ASSIGN foo Testing One Two
- ECHO $#foo $@foo
- ASSIGN junk ${#foo + @foo}
- The ECHO line will display 3 15 and the variable junk have the
- value 18.
-
- Additionally, values assigned to FUNCTION_RETURN are taken to be
- the return value of a function.
-
- IMPORTANT NOTE:
- There is a special version of this command called '@'
- for use in aliases and scripts. It is well suited to mathematical
- operations. Its use over ASSIGN is highly recommended.
-
- See Also:
- @
- ALIAS
- IF
- SET INPUT_ALIASES
- ALIAS functions
-