Maximal munch

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In computer programming, the "maximal munch" principle is the rule that as much of the input as possible should be processed when creating some construct.

For instance, the lexical grammar for many programming languages requires that the next token be built from the maximum number of characters from the input stream (eg, in the C language, the three-character sequence <<= is the single token <<=, and not the three tokens <, < and =, or the two tokens << and =).

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