Using the Special Pattern Matchers

These pattern matchers are used to locate hard-to-find items within text:

Regular expression matching for complex patterns https://www.thunderstone.com/texis/site/pages/regexp.html
Approximate pattern matching for fuzzy searches https://www.thunderstone.com/texis/site/pages/xpm.html
Numeric pattern matching for finding quantities https://www.thunderstone.com/texis/site/pages/npm.html

If improperly used these pattern matchers can slow queries. Therefore they require other keyword(s) in the query and are disabled entirely under Page proximity. For more details see the Vortex manual on Query Protection (https://docs.thunderstone.com/site/vortexman/query_protection.html).


Query	Matcher	Finds

`ronald %regan`	Approx	Ronald Raygun, Ronald Re-an, Ronald 8eagan
`%75MYPARTNO9045d/6a`	Approx	Anything within 75% of looking like MYPARTNO9045d/6a
`/19[789][0-9]`	RegEXpr	1970-1999
`/[1-9]{3}\-=[0-9]{4}`	RegEXpr	Phone numbers: 555-1212, 820-2200
`#87`	Numeric	four score and seven, 87
`#>0<1`	Numeric	Fractions like 9/16, 55%, 0.123, 15 nanoseconds

Table 7.3: Pattern Matcher Examples