style: s/non-terminal/nonterminal/

I personally prefer 'non terminal', or 'non-terminal', but
'nonterminal' is the common spelling.

* data/glr.c, src/parse-gram.y, src/symtab.c, src/symtab.h,
* tests/input.at, doc/refcard.tex: here.

TODO

@@ -8,7 +8,6 @@ Several features are not available in all the backends.
 
 * Short term
 ** consistency
-nonterminal vs non terminal vs non-terminal
 token vs terminal
 
 ** yacc.c
@@ -214,9 +213,10 @@ Provide better assistance for understanding the conflicts by providing
 a sample text exhibiting the (LALR) ambiguity.  See the paper from
 DeRemer and Penello: they already provide the algorithm.
 
-** Statically check for potential ambiguities in GLR grammars.  See
-<http://www.i3s.unice.fr/~schmitz/papers.html#expamb> for an approach.
-
+** Statically check for potential ambiguities in GLR grammars
+See <http://www.lsv.fr/~schmitz/pub/expamb.pdf> for an approach.
+An Experimental Ambiguity Detection Tool ∗ Sylvain Schmitz
+LORIA, INRIA Nancy - Grand Est, Nancy, France
 
 * Extensions
 ** Multiple start symbols

data/glr.c

@@ -639,7 +639,7 @@ struct yyGLRState {
   size_t yyposn;
   union {
     /** First in a chain of alternative reductions producing the
-     *  non-terminal corresponding to this state, threaded through
+     *  nonterminal corresponding to this state, threaded through
      *  yynext.  */
     yySemanticOption* yyfirstVal;
     /** Semantic value for this state.  */

doc/bison.texi

@@ -9947,7 +9947,7 @@ Entering state 1
 This first batch shows a specific feature of this grammar: the first rule
 (which is in line 34 of @file{mfcalc.y} can be reduced without even having
 to look for the first token.  The resulting left-hand symbol (@code{$$}) is
-a valueless (@samp{()}) @code{input} non terminal (@code{nterm}).
+a valueless (@samp{()}) @code{input} nonterminal (@code{nterm}).
 
 Then the parser calls the scanner.
 @example

doc/refcard.tex

@@ -358,7 +358,7 @@ otherwise it will have the format {\tt {\it name}.tab.h}, where
 
 In the above, {\it t} is a {\it type} defined in the {\tt \%union}
 definition,  {\it n} is a {\it terminal} symbol name, {\it m} is a
-{\it non-terminal} symbol name, and {\it association} can be one of
+{\it nonterminal} symbol name, and {\it association} can be one of
 {\tt \%left}, {\tt \%right}, or {\tt \%nonassoc}.
 
 \vskip .10truein
@@ -401,16 +401,16 @@ Rules take the form:
 
 \vskip -\baselineskip
 \beginexample
-     non-terminal : {\it statement} 1
-                  | {\it statement} 2
-                      \vdots
-                  | {\it statement n}
-                  ;
+     nonterminal : {\it statement} 1
+                 | {\it statement} 2
+                     \vdots
+                 | {\it statement n}
+                 ;
 \endexample
 
 Where {\it statements} can be either empty, or contain
 a mixture of C code (enclosed in {\tt \{...\}}), and the
-symbols that make up the non-terminal. For example:
+symbols that make up the nonterminal. For example:
 
 \vskip -\baselineskip
 \beginexample

src/parse-gram.c

@@ -2705,7 +2705,7 @@ yyreduce:
       if (current_class == nterm_sym)
         {
           gram_error (&(yylsp[0]),
-                      _("character literals cannot be non-terminals"));
+                      _("character literals cannot be nonterminals"));
           YYERROR;
         }
       (yyval.id) = symbol_get (char_name ((yyvsp[0].CHAR)), (yylsp[0]));

src/parse-gram.y

@@ -641,7 +641,7 @@ id:
       if (current_class == nterm_sym)
         {
           gram_error (&@1,
-                      _("character literals cannot be non-terminals"));
+                      _("character literals cannot be nonterminals"));
           YYERROR;
         }
       $$ = symbol_get (char_name ($1), @1);

src/state.h

@@ -117,7 +117,7 @@ typedef struct
 
 /* What is the symbol labelling the transition to
    TRANSITIONS->states[Num]?  Can be a token (amongst which the error
-   token), or non terminals in case of gotos.  */
+   token), or nonterminals in case of gotos.  */
 
 # define TRANSITION_SYMBOL(Transitions, Num) \
   (Transitions->states[Num]->accessing_symbol)

src/symtab.c

@@ -478,7 +478,7 @@ symbol_user_token_number_set (symbol *sym, int user_token_number, location loc)
   int *user_token_numberp = &sym->content->user_token_number;
   if (sym->content->class != token_sym)
     complain (&loc, complaint,
-              _("non-terminals cannot be given an explicit number"));
+              _("nonterminals cannot be given an explicit number"));
   else if (*user_token_numberp != USER_NUMBER_UNDEFINED
            && *user_token_numberp != user_token_number)
     complain (&loc, complaint, _("redefining user token number of %s"),
@@ -614,7 +614,7 @@ symbol_make_alias (symbol *sym, symbol *str, location loc)
 {
   if (sym->content->class != token_sym)
     complain (&loc, complaint,
-              _("non-terminals cannot be given a string alias"));
+              _("nonterminals cannot be given a string alias"));
   else if (str->alias)
     complain (&loc, Wother,
               _("symbol %s used more than once as a literal string"), str->tag);
@@ -677,7 +677,7 @@ complain_user_token_number_redeclared (int num, symbol *first, symbol *second)
 static inline bool
 symbol_translation (symbol *this)
 {
-  /* Non-terminal? */
+  /* Nonterminal? */
   if (this->content->class == token_sym
       && !this->is_alias)
     {

src/symtab.h

@@ -40,7 +40,7 @@ typedef enum
 {
   unknown_sym,          /**< Undefined.  */
   token_sym,            /**< Terminal. */
-  nterm_sym             /**< Non-terminal. */
+  nterm_sym             /**< Nonterminal. */
 } symbol_class;
 
 

tests/input.at

@@ -152,28 +152,28 @@ AT_BISON_CHECK([-fcaret input.y], [1], [],
 [[input.y:1.1-6: warning: deprecated directive, use '%type' [-Wdeprecated]
  %nterm expr "expression";
  ^^^^^^
-input.y:1.13-24: error: non-terminals cannot be given a string alias
+input.y:1.13-24: error: nonterminals cannot be given a string alias
  %nterm expr "expression";
              ^^^^^^^^^^^^
 input.y:2.1-6: warning: deprecated directive, use '%type' [-Wdeprecated]
  %nterm term 123;
  ^^^^^^
-input.y:2.13-15: error: non-terminals cannot be given an explicit number
+input.y:2.13-15: error: nonterminals cannot be given an explicit number
  %nterm term 123;
              ^^^
 input.y:3.1-6: warning: deprecated directive, use '%type' [-Wdeprecated]
  %nterm fact 124 "factor";
  ^^^^^^
-input.y:3.13-15: error: non-terminals cannot be given an explicit number
+input.y:3.13-15: error: nonterminals cannot be given an explicit number
  %nterm fact 124 "factor";
              ^^^
-input.y:3.17-24: error: non-terminals cannot be given a string alias
+input.y:3.17-24: error: nonterminals cannot be given a string alias
  %nterm fact 124 "factor";
                  ^^^^^^^^
 input.y:4.1-6: warning: deprecated directive, use '%type' [-Wdeprecated]
  %nterm '+' '*';
  ^^^^^^
-input.y:4.8-10: error: character literals cannot be non-terminals
+input.y:4.8-10: error: character literals cannot be nonterminals
  %nterm '+' '*';
         ^^^
 input.y:5.1-6: warning: deprecated directive, use '%type' [-Wdeprecated]