diff --git a/doc/bison.texi b/doc/bison.texi
index 0301a96c..927b9374 100644
--- a/doc/bison.texi
+++ b/doc/bison.texi
@@ -2715,11 +2715,11 @@ operators in @code{yylex}.
 int
 yylex (void)
 @{
-  int c;
+  int c = getchar ();
 
   /* Ignore white space, get first nonwhite character. */
-  while ((c = getchar ()) == ' ' || c == '\t')
-    continue;
+  while (c == ' ' || c == '\t')
+    c = getchar ();
 
   if (c == EOF)
     return 0;
diff --git a/tests/calc.at b/tests/calc.at
index 38f85dcd..ba33592a 100644
--- a/tests/calc.at
+++ b/tests/calc.at
@@ -168,7 +168,7 @@ class CalcLexer(R) : Lexer
       return YYTokenType.EOF;
 
     // Numbers.
-    if (input.front == '.' || input.front.isNumber)
+    if (input.front.isNumber)
       {
         import std.conv : parse;
         semanticVal_.ival = input.parse!int;
@@ -257,8 +257,8 @@ read_integer (]AT_YYLEX_FORMALS[)
     }
   while ((c = get_char (]AT_YYLEX_ARGS[)) == ' ' || c == '\t');
 
-  /* Process numbers   */
-  if (c == '.' || isdigit (c))
+  /* Process numbers.   */
+  if (isdigit (c))
     {
       unget_char (]AT_YYLEX_PRE_ARGS[ c);
       ]AT_VAL[.ival = read_integer (]AT_YYLEX_ARGS[);