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acid: fix format string bugs and comment line counting (from eriks patch/acid-nits patch)

--- a/sys/src/cmd/acid/acid.h

+++ b/sys/src/cmd/acid/acid.h

@@ -243,6 +243,10 @@

 int	yylex(void);

 int	yyparse(void);

+#pragma	varargck	argpos	error		1

+#pragma	varargck	argpos	fatal		1

+#pragma	varargck	argpos	yyerror		1

+

 enum

 {

 	ONAME,

--- a/sys/src/cmd/acid/expr.c

+++ b/sys/src/cmd/acid/expr.c

@@ -537,7 +537,7 @@

 	res->op = OCONST;

 	res->type = TINT;

 	if(l.type != TINT || r.type != TINT)

-		error("bad expr type %");

+		error("bad expr type %%");

 	res->ival = l.ival%r.ival;

 }

--- a/sys/src/cmd/acid/lex.c

+++ b/sys/src/cmd/acid/lex.c

@@ -329,6 +329,14 @@

 	case '\t':

 		goto loop;

+	case '/':

+		c = lexc();

+		if(c != '/'){

+			unlexc(c);

+			return '/';

+		}

+		eatnl();

+

 	case '\n':

 		line++;

 		if(interactive == 0)

@@ -390,15 +398,6 @@

 			return Tinc;

 		unlexc(c);

 		return '+';

-

-	case '/':

-		c = lexc();

-		if(c == '/') {

-			eatnl();

-			goto loop;

-		}

-		unlexc(c);

-		return '/';

 	case '\'':

 		c = lexc();

--- a/sys/src/cmd/acid/main.c

+++ b/sys/src/cmd/acid/main.c

@@ -162,7 +162,7 @@

 			text = open(aout, OREAD);

 		if(text < 0)

-			error("%s: can't open %s: %r\n", argv0, aout);

+			error("%s: can't open %s: %r", argv0, aout);

 		readtext(aout);

 	}

 	if(pid)					/* pid given */

@@ -273,7 +273,7 @@

 		print("%s: (error) loadmap: cannot make symbol map\n", argv0);

 	if(syminit(text, &fhdr) < 0) {

-		print("%s: (error) syminit: %r\n", argv0);

+		print("%s: (error) syminit: %r", argv0);

 		return;

 	}

 	print("%s:%s\n", s, fhdr.name);

--- a/sys/src/cmd/acid/proc.c

+++ b/sys/src/cmd/acid/proc.c

@@ -87,7 +87,7 @@

 		open("/dev/cons", OWRITE);

 		open("/dev/cons", OWRITE);

 		exec(argv[0], argv);

-		fatal("new: exec %s: %r");

+		fatal("new: exec %s: %r", argv[0]);

 	default:

 		install(pid);

 		msg(pid, "waitstop");

--- a/sys/src/cmd/acid/util.c

+++ b/sys/src/cmd/acid/util.c

@@ -203,7 +203,7 @@

 		break;

 	}

 	if(ret < 0)

-		error("can't get register %s: %r\n", reg);

+		error("can't get register %s: %r", reg);

 	return v;

 }

-- 

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