games/mix: fix incorrect line numbers

rc/bin/g

@@ -14,7 +14,7 @@ case 0
          exit usage 
 case 1 
          pattern=$1 
-         files=(`{ls *.[bcChlmsy] *.asm *.awk *.cc *.cgi *.cpp *.cs *.go *.goc *.java *.lx *.ms *.pl *.py *.rc *.tex *.xy >[2]/dev/null}) 
+         files=(`{ls *.[bcChlmsy] *.ml[iyl] *.ml *.asm *.awk *.cc *.cgi *.cpp *.cs *.go *.goc *.java *.lx *.ms *.pl *.py *.rc *.tex *.xy >[2]/dev/null}) 
 case * 
          pattern=$1 
          shift 

sys/src/games/mix/mix.c

@@ -320,6 +320,14 @@ getr(void)
 	return r;
 }
 
+void
+ungetr(Rune r)
+{
+	if(r == '\n')
+		line--;
+	Bungetrune(&bin);
+}
+
 long
 yylex(void)
 {
@@ -339,22 +347,16 @@ Loop:
 	case '\t':
 	case ' ':
 		goto Loop;
-	case '\n':
+	case '\n': case '*': case '+':
-	case '*':
+	case '-': case ':': case ',':
-	case '+':
+	case '(': case ')': case '=':
-	case '-':
-	case ':':
-	case ',':
-	case '(':
-	case ')':
-	case '=':
 		return r;
 	case '/':
 		r = getr();
-		if(r == '/') {
+		if(r == '/')
 			return LSS;
-		} else
+		else
-			Bungetrune(&bin);
+			ungetr(r);
 		return '/';
 	case '"':
 		for(bp = buf; bp < buf+5; bp++) {
@@ -369,30 +371,20 @@ Loop:
 	ep = buf+nelem(buf)-1;
 	isnum = 1;
 	for(;;) {
-		if(runetomix(r) == -1) 
+		if(runetomix(r) == -1)
 			yyerror("Invalid character %C", r);
 		if(bp == ep)
 			yyerror("Symbol or number too long");
 		*bp++ = r;
 		if(isnum && (r >= Runeself || !isdigit(r)))
 			isnum = 0;
-		r = getr();
+		switch(r = getr()) {
-		switch(r) {
+		case Beof: case '\t': case '\n':
-		case Beof:
+		case '+': case '-': case '*':
-		case '\t':
+		case ':': case ',': case '(':
-		case '\n':
+		case ')': case '=': case ' ':
-		case '+':
+		case '/': case '#':
-		case '-':
+			ungetr(r);
-		case '*':
-		case ':':
-		case ',':
-		case '(':
-		case ')':
-		case '=':
-		case ' ':
-		case '/':
-		case '#':
-			Bungetrune(&bin);
 			*bp = '\0';
 			goto End;
 		}
@@ -407,6 +399,18 @@ End:
 	return yylval.sym->lex;
 }
 
+Sym*
+getsym(char *name)
+{
+	Sym *s;
+
+	s = emallocz(sizeof(*s) + strlen(name));
+	strcpy(s->nbuf, name);
+	s->name = s->nbuf;
+	s->lex = LSYMREF;
+	return s;
+}
+
 Sym*
 sym(char *name)
 {
@@ -416,11 +420,7 @@ sym(char *name)
 	s = (Sym*)avllookup(syms, &l, 0);
 	if(s != nil)
 		return s;
-
+	s = getsym(name);
-	s = emallocz(sizeof(*s) + strlen(name));
-	strcpy(s->nbuf, name);
-	s->name = s->nbuf;
-	s->lex = LSYMREF;
 	avlinsert(syms, s);
 	return s;
 }

sys/src/games/mix/mix.h

@@ -39,6 +39,7 @@ void yyerror(char*, ...);
 void vmerror(char*, ...);
 void skipto(char);
 Sym *sym(char*);
+Sym *getsym(char*);
 void sinit(void);
 int asmfile(char*);
 int V(u32int, int);