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Latest revision | Your text | ||
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By now you know evaluation brackets happen before the code itself evaluates, but what about identifiers? | By now you know evaluation brackets happen before the code itself evaluates, but what about identifiers? | ||
− | + | * If you space out the [ ] inside the identifier, the previous rules apply | |
− | |||
− | If you space out the [ ] inside the identifier, the previous rules apply | ||
//echo -a [ $me ] $+( [ $!me ] ) | //echo -a [ $me ] $+( [ $!me ] ) | ||
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The interpreter is able to handle the commas and braces as part of the code. | The interpreter is able to handle the commas and braces as part of the code. | ||
− | + | * If you don't space out the [ ], they will be interpreted when the identifier evaluate each parameter: | |
− | If you don't space out the [ ], they will be interpreted when the identifier evaluate each parameter: | ||
alias changev1to2 if (2) noop | alias changev1to2 if (2) noop | ||
alias changev1to3 echo -a param: $1 | if (3) noop | alias changev1to3 echo -a param: $1 | if (3) noop | ||
alias custom echo -a $1 $3 | alias custom echo -a $1 $3 | ||
+ | alias | ||
//if (1) noop $changev1to2 $custom($v1,$changev1to3( [ $v1 ] ),[ $v1 ]) | //if (1) noop $changev1to2 $custom($v1,$changev1to3( [ $v1 ] ),[ $v1 ]) | ||
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The non spaced [ $v1 ] for the third parameter of $custom, is not resolved for the /noop command, here are the inbetween steps: | The non spaced [ $v1 ] for the third parameter of $custom, is not resolved for the /noop command, here are the inbetween steps: | ||
− | + | - //if evaluates, the condition is '1' so $v1 is set 1 | |
− | + | - noop $changev1to2 $custom($v1,$changev1to3( [ $v1 ] ),[ $v1 ]) is the command to be executed for that if | |
− | + | - [ ] are processed for the line, the [ $v1 ] for the $changev1to3 alias is resolved, so $v1 is our current value so far: 1 | |
− | + | - the line is evaluated, $changev1to2 is evaluated and set $v1 to 2 | |
− | + | - $custom is evaluated, its first parameter $v1, is then 2 | |
− | + | - the second parameter of $custom evaluates "$changev1to3( 1 )" to $null, but it sets $v1 to 3 ('1' is our previous $v1 code, although it's no problemo here, keep in mind: it's double evaluated!) | |
− | + | - the third parameter of $custom evaluates: the [ ] are resolved, $v1 evaluates once (no double evaluation) to 3 | |
'''Note''': the non spaced [ $v1 ] is not required to get $v1 to be 3, not using [ ] would also correctly make $v1 3 since $changev1to3 was just called, but it illustrates that the [ ] are not resolved at the same stage depending on the spacing. | '''Note''': the non spaced [ $v1 ] is not required to get $v1 to be 3, not using [ ] would also correctly make $v1 3 since $changev1to3 was just called, but it illustrates that the [ ] are not resolved at the same stage depending on the spacing. | ||
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The code above prints: | The code above prints: | ||
− | + | example! => [ example! ] | |
== Additional Odd Behaviors == | == Additional Odd Behaviors == | ||
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The above code prints: | The above code prints: | ||
$!me$me vs. $me$!me | $!me$me vs. $me$!me | ||
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== Commands with Special Behavior == | == Commands with Special Behavior == | ||
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: | : | ||
− | Note that unlike the reset of the commands, '''{{mIRC|/unset}}''' cannot set variables in the format of %var {{mIRC|$+}} %var. Evaluation brackets are needed to fix this. see | + | Note that unlike the reset of the commands, '''{{mIRC|/unset}}''' cannot set variables in the format of %var {{mIRC|$+}} %var. Evaluation brackets are needed to fix this. see https://en.wikichip.org/wiki/mirc/variables#Special_behaviors_.26_quirks |
== Quirks == | == Quirks == |