flex lexer - lex: default rule for unrecognized strings -

flex lexer - lex: default rule for unrecognized strings -

in ocamllex, can utilize _ lexer rule match string not match defined rules, , raise errors. how can accomplish in lex/flex?

typically, define rule this, go @ end:

.|\n { /* process default here */ }

this rule match character wasn't matched other rule.

hope helps!

lex flex-lexer