Patch from James Morrison

* lex.l: Add \t as a whitespace character.
* treelang.texi (Lexical Syntax): Document a tab as whitespace.

From-SVN: r74311

gcc/treelang/ChangeLog

 2003-12-04  James A. Morrison  <ja2morri@uwaterloo.ca>
 
+	* lex.l: Add \t as a whitespace character.
+	* treelang.texi (Lexical Syntax): Document a tab as whitespace.
+
 	* treelang.texi (What is GNU Treelang?): Fix a typo.
 	(Lexical Syntax): Create an itemize list of keywords.  Add commas to
 	paragraph defining names.

gcc/treelang/lex.l

@@ -78,7 +78,7 @@ static void dump_lex_value (int lexret);
    ((struct prod_token_parm_item *)yylval)->tp.tok.charno = next_tree_charno;
  }
 
-[ \n]+ {
+[ \n\t]+ {
   update_lineno_charno ();
     NOT_RETURN (WHITESPACE);
 }

gcc/treelang/treelang.texi

@@ -399,8 +399,8 @@ Treelang programs consist of whitespace, comments, keywords and names.
 @itemize @bullet
 
 @item
-Whitespace consists of the space character and the end of line
-character. Tabs are not allowed. Line terminations are as defined by the
+Whitespace consists of the space character, a tab, and the end of line
+character.  Line terminations are as defined by the
 standard C library. Whitespace is ignored except within comments,
 and where it separates parts of the program. In the example below, A and
 B are two separate names separated by whitespace.