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added comments about [[ ]] to ash and hush. no code changes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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@ -8736,6 +8736,11 @@ static int ulimitcmd(int, char **) FAST_FUNC;
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* Additional operators:
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* || and && should work as -o and -a
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* =~ regexp match
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* == should do _pattern match_ against right side. bash does this:
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* # [[ *a* == bab ]] && echo YES
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* # [[ bab == *a* ]] && echo YES
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* YES
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* != does the negated == (i.e., also with pattern matching)
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* Apart from the above, [[ expr ]] should work as [ expr ]
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*/
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@ -318,6 +318,11 @@ struct command {
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// Additional operators:
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// || and && should work as -o and -a
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// =~ regexp match
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// == should do _pattern match_ against right side. bash does this:
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// # [[ *a* == bab ]] && echo YES
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// # [[ bab == *a* ]] && echo YES
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// YES
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// != does the negated == (i.e., also with pattern matching)
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// Apart from the above, [[ expr ]] should work as [ expr ]
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/* used for "export noglob=* glob* a=`echo a b`" */
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