When extracting identifiers, synonyms and descriptions from files, it is often necessary to use only a specific portion of an existing string and possibly modify it to maintain compatibility with other files. The match and replace pattern used extensively in the Stage 2 configuration files is intended to simplify this process and to remove the need to use one-liners to generate intermediate files with compatible naming.
The pattern used is to match a regular expression within the selected string and optionally replace part of this string using a second regular expression.
The simplest case is to match the entire string:
To match part of a string, either specify the pattern to match inside the parentheses, or specify a sting to exclude outside the parentheses:
If specified, a second regular expression acts on the value captured during the match step and substitutes one of more characters:
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