X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=helm%2Fmetadata%2Fextractor%2Fmeta_lex_ind.l;h=3d3ad97ce1690bddbc6fa6dcded0c1c34777a7a9;hb=871118b96281306d82ac156491179f3c220aad79;hp=eb915aa665dbef0cf696414957b9909a7ad635fb;hpb=6070c7830a1980abdf87ed5cac607dce170f86f3;p=helm.git

diff --git a/helm/metadata/extractor/meta_lex_ind.l b/helm/metadata/extractor/meta_lex_ind.l
index eb915aa66..3d3ad97ce 100644
--- a/helm/metadata/extractor/meta_lex_ind.l
+++ b/helm/metadata/extractor/meta_lex_ind.l
@@ -95,7 +95,7 @@ void search(char *uri, int first_child, int position, int depth);
 uri                     [^"]+
 digits                  [0-9]+ 
 value                   [^"]+                  
-id                      [a-zA-Z]([-_a-zA-Z])*
+id                      [a-zA-Z]([-_'a-zA-Z0-9])*
 
  /***************************************************************/
  /* 4. Rules.							*/