# HG changeset patch
# User jbe
# Date 1408829710 -7200
# Node ID 4fc9090ada1d6dfbdf00ad462cfb1969631cc2c1
# Parent  367fc70acc15cbf0aed04abf25595aab5f7c1a30
Mention 3 extra elements on stack in README; Changed order of two instructions in seqlualib.c

diff -r 367fc70acc15 -r 4fc9090ada1d README
--- a/README	Sat Aug 23 23:13:17 2014 +0200
+++ b/README	Sat Aug 23 23:35:10 2014 +0200
@@ -133,4 +133,11 @@
     printcsv(assert(io.open("testfile")):lines())
     -- prints: line1,line2,... of "testfile"
 
+NOTE: During iteration using ``seqlua_iterloop``, ``seqlua_iterloopauto``, or
+``seqlua_iterinit``, three extra elements are stored on the stack (additionally
+to the value). These extra elements are removed automatically when the loop ends
+(i.e. when ``seqlua_iternext`` returns zero). The value pushed onto the stack
+for every iteration step has to be removed manually from the stack, unless
+``seqlua_iterloopauto`` is used.
 
+
diff -r 367fc70acc15 -r 4fc9090ada1d seqlualib.c
--- a/seqlualib.c	Sat Aug 23 23:13:17 2014 +0200
+++ b/seqlualib.c	Sat Aug 23 23:35:10 2014 +0200
@@ -20,8 +20,8 @@
       luaL_getmetafield(L, idx, "__len")
     ) {
       lua_pop(L, 1);
+      iter->len = luaL_len(L, idx);
       iter->itertype = SEQLUA_ITERTYPE_INDEX;
-      iter->len = luaL_len(L, idx);
     } else {
       luaL_checktype(L, idx, LUA_TTABLE);
       iter->itertype = SEQLUA_ITERTYPE_RAW;