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Document and unit-test regex-capture reset logic (#1451)

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* mlr --norc cat was erroring

* Document and unit-test regex-capture reset logic
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John Kerl 2023-12-19 09:47:59 -05:00 • committed by GitHub
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1
test/cases/dsl-regex-matching/null-reset/cmd Normal file
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mlr -n put -f ${CASEDIR}/mlr

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test/cases/dsl-regex-matching/null-reset/experr Normal file
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test/cases/dsl-regex-matching/null-reset/expout Normal file
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[\1]:[\2]
true
[]:[]
true
[a]:[c]
false
[]:[]
null
[\1]:[\2]

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test/cases/dsl-regex-matching/null-reset/mlr Normal file
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end {
print("[\1]:[\2]");
print("abc" =~ "...");
print("[\1]:[\2]");
print("abc" =~ "(.).(.)");
print("[\1]:[\2]");
print("abc" =~ "(.)x(.)");
print("[\1]:[\2]");
print("abc" =~ null);
print("[\1]:[\2]");
}