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better error messages

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This commit is contained in:
Roberto Ierusalimschy 2003-03-19 18:16:12 -03:00
parent 0ca225d33a
commit 1a553f9199
2 changed files with 7 additions and 8 deletions
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9
liolib.c
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@ -1,5 +1,5 @@
/*
** $Id: liolib.c,v 2.37 2003/03/14 19:08:11 roberto Exp roberto $
** $Id: liolib.c,v 2.38 2003/03/18 12:25:32 roberto Exp roberto $
** Standard I/O (and system) library
** See Copyright Notice in lua.h
*/
@ -377,8 +377,7 @@ static int g_read (lua_State *L, FILE *f, int first) {
}
else {
const char *p = lua_tostring(L, n);
if (!p || p[0] != '*')
return luaL_error(L, "invalid `read' option");
luaL_argcheck(L, p && p[0] == '*', n, "invalid option");
switch (p[1]) {
case 'n': /* number */
success = read_number(L, f);
@ -391,7 +390,7 @@ static int g_read (lua_State *L, FILE *f, int first) {
success = 1; /* always success */
break;
case 'w': /* word */
return luaL_error(L, "obsolete option `*w'");
return luaL_error(L, "obsolete option `*w' to `read'");
default:
return luaL_argerror(L, n, "invalid format");
}
@ -563,7 +562,7 @@ static int io_tmpname (lua_State *L) {
#else
char buff[L_tmpnam];
if (tmpnam(buff) != buff)
return luaL_error(L, "unable to generate a unique filename");
return luaL_error(L, "unable to generate a unique filename in `tmpname'");
lua_pushstring(L, buff);
return 1;
#endif