implemented REG_ANCHORED execution flag

* So you can anchor executions of already compiled patterns.
  In principle REG_BOSONLY could also be handled by the same code.
* Required by SciTECO.
* Test suite has been fixed and extended.
  The test program now takes getopt() style short arguments to specify flags.

1 files changed, 1 insertions, 0 deletions

diff --git a/regc_lex.c b/regc_lex.c
index f7b4c95..6186e10 100644
--- a/regc_lex.c
+++ b/regc_lex.c
@@ -322,6 +322,7 @@ next(
 
     /*
      * REG_BOSONLY
+     * FIXME: Let this be handled by REG_ANCHORED during execution as well?
      */
 
     if (v->nexttype == EMPTY && (v->cflags&REG_BOSONLY)) {