(flex.info.gz) Why doesn't yyrestart() set the start state back to INITIAL?

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 Why doesn't yyrestart() set the start state back to INITIAL?
 ============================================================
 
 There are two reasons.  The first is that there might be programs that
 rely on the start state not changing across file changes.  The second
 is that beginning with `flex' version 2.4, use of `yyrestart()' is no
 longer required, so fixing the problem there doesn't solve the more
 general problem.
 

Info Catalog

(flex.info.gz) If I have a simple grammar cant I just parse it with flex?

(flex.info.gz) FAQ

(flex.info.gz) How can I match C-style comments?