mirror of
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53 lines
998 B
Plaintext
53 lines
998 B
Plaintext
FN=DNP { ignore }
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FN=X(*) { $=$1 }
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/* iteration demo */
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FOO=abcde
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BAR=x /* BAR= wouldn't be syntactically correct. We need a non-empty value */
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FOO=(*)(?) {
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BAR=$BAR$2
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FOO=$1
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continue
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}
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BAR=x(*) { $=$1 } /* remove the "x" */
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REF=R[0-9]* {
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T=R
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VAL=(#R) { R=$1 }
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TOL <= 5%
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FN=*% { TOL<=$$ }
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break REF
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// end break continue ignore
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}
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/*
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pattern:
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() | like in RE
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* ? like in glob
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(#U) expect a numeric value of unit U (use substring to get canonical value)
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subst: $1 ... $field
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substring:
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$1, $2, ...
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variable:
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$foo, ...
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with curly braces:
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${foo}, ...
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input variable (in pattern):
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$$
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the input variable ($) can also be used as LHS for matches, assignments, and
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as break/continue target.
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Caveat:
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Wrong: FN=* { X=$FN } there is no variable called FN
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Right: FN=* { X=$$ } yields the Fn field selected by FN
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Wrong: VAL=(#R) { R=$VAL } yields literal value
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Wrong: VAL=(#R) { R=$$ } yields literal value
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Right: VAL=(#R) { R=$1 } yield canonicalized value
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*/
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