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.B int pcre_config(int \fIwhat\fP, void *\fIwhere\fP);
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This function makes it possible for a client program to find out which optional
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arguments are as follows:
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\fIwhat\fP A code specifying what information is required
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\fIwhere\fP Points to where to put the data
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PCRE_CONFIG_LINK_SIZE Internal link size: 2, 3, or 4
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PCRE_CONFIG_MATCH_LIMIT Internal resource limit
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PCRE_CONFIG_MATCH_LIMIT_RECURSION