(flex.info.gz) How can I make REJECT cascade across start condition boundaries?

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 How can I make REJECT cascade across start condition boundaries?
 ================================================================
 
 You can do this as follows.  Suppose you have a start condition `A', and
 after exhausting all of the possible matches in `<A>', you want to try
 matches in `<INITIAL>'.  Then you could use the following:
 
 
      %x A
      %%
      <A>rule_that_is_long    ...; REJECT;
      <A>rule                 ...; REJECT; /* shorter rule */
      <A>etc.
      ...
      <A>.|\n  {
      /* Shortest and last rule in <A>, so
      * cascaded REJECTs will eventually
      * wind up matching this rule.  We want
      * to now switch to the initial state
      * and try matching from there instead.
      */
      yyless(0);    /* put back matched text */
      BEGIN(INITIAL);
      }
 

Info Catalog

(flex.info.gz) How can I match text only at the end of a file?

(flex.info.gz) FAQ

(flex.info.gz) Why cant I use fast or full tables with interactive mode?