`..` half closed range; `...` open range; `...` variadic syntax

14 files changed, 106 insertions, 106 deletions

diff --git a/core/_preload.odin b/core/_preload.odin
index b497c98ed..4d438aad3 100644
--- a/core/_preload.odin
+++ b/core/_preload.odin
@@ -285,7 +285,7 @@ copy :: proc(dst, src: []$T) -> int #cc_contextless {
 
 
 
-append :: proc(array: ^[]$T, args: ..T) -> int #cc_contextless {
+append :: proc(array: ^[]$T, args: ...T) -> int #cc_contextless {
 	if array == nil do return 0;
 
 	arg_len := len(args);
@@ -303,7 +303,7 @@ append :: proc(array: ^[]$T, args: ..T) -> int #cc_contextless {
 	return len(array);
 }
 
-append :: proc(array: ^[dynamic]$T, args: ..T) -> int {
+append :: proc(array: ^[dynamic]$T, args: ...T) -> int {
 	if array == nil do return 0;
 
 	arg_len := len(args);
@@ -559,21 +559,21 @@ __complex128_ne :: proc(a, b: complex128) -> bool #cc_contextless #inline { retu
 
 __bounds_check_error :: proc(file: string, line, column: int, index, count: int) #cc_contextless {
 	if 0 <= index && index < count do return;
-	fmt.fprintf(os.stderr, "%s(%d:%d) Index %d is out of bounds range 0..<%d\n",
+	fmt.fprintf(os.stderr, "%s(%d:%d) Index %d is out of bounds range 0..%d\n",
 	            file, line, column, index, count);
 	__debug_trap();
 }
 
 __slice_expr_error :: proc(file: string, line, column: int, low, high, max: int) #cc_contextless {
 	if 0 <= low && low <= high && high <= max do return;
-	fmt.fprintf(os.stderr, "%s(%d:%d) Invalid slice indices: [%d..<%d..<%d]\n",
+	fmt.fprintf(os.stderr, "%s(%d:%d) Invalid slice indices: [%d..%d..%d]\n",
 	            file, line, column, low, high, max);
 	__debug_trap();
 }
 
 __substring_expr_error :: proc(file: string, line, column: int, low, high: int) #cc_contextless {
 	if 0 <= low && low <= high do return;
-	fmt.fprintf(os.stderr, "%s(%d:%d) Invalid substring indices: [%d..<%d]\n",
+	fmt.fprintf(os.stderr, "%s(%d:%d) Invalid substring indices: [%d..%d]\n",
 	            file, line, column, low, high);
 	__debug_trap();
 }
@@ -623,7 +623,7 @@ __mem_copy_non_overlapping :: proc(dst, src: rawptr, len: int) -> rawptr #cc_con
 }
 
 __mem_compare :: proc(a, b: ^u8, n: int) -> int #cc_contextless {
-	for i in 0..<n {
+	for i in 0..n {
 		match {
 		case (a+i)^ < (b+i)^: return -1;
 		case (a+i)^ > (b+i)^: return +1;
@@ -791,9 +791,9 @@ __dynamic_map_rehash :: proc(using header: __MapHeader, new_count: int) {
 
 	__dynamic_array_resize(nm_hashes, size_of(int), align_of(int), new_count);
 	__dynamic_array_reserve(&nm.entries, entry_size, entry_align, m.entries.len);
-	for i in 0..<new_count do nm.hashes[i] = -1;
+	for i in 0..new_count do nm.hashes[i] = -1;
 
-	for i := 0; i < m.entries.len; i++ {
+	for i in 0..m.entries.len {
 		if len(nm.hashes) == 0 do __dynamic_map_grow(new_header);
 
 		entry_header := __dynamic_map_get_entry(header, i);
diff --git a/core/decimal.odin b/core/decimal.odin
index f1d6d5fc2..c5ded337f 100644
--- a/core/decimal.odin
+++ b/core/decimal.odin
@@ -20,29 +20,29 @@ decimal_to_string :: proc(buf: []u8, a: ^Decimal) -> string {
 
 	// TODO(bill): make this work with a buffer that's not big enough
 	assert(len(buf) >= n);
-	buf = buf[0..<n];
+	buf = buf[0..n];
 
 	if a.count == 0 {
 		buf[0] = '0';
-		return string(buf[0..<1]);
+		return string(buf[0..1]);
 	}
 
 	w := 0;
 	if a.decimal_point <= 0 {
 		buf[w] = '0'; w++;
 		buf[w] = '.'; w++;
-		w += digit_zero(buf[w ..< w-a.decimal_point]);
-		w += copy(buf[w..], a.digits[0..<a.count]);
+		w += digit_zero(buf[w .. w-a.decimal_point]);
+		w += copy(buf[w..], a.digits[0..a.count]);
 	} else if a.decimal_point < a.count {
-		w += copy(buf[w..], a.digits[0..<a.decimal_point]);
+		w += copy(buf[w..], a.digits[0..a.decimal_point]);
 		buf[w] = '.'; w++;
-		w += copy(buf[w..], a.digits[a.decimal_point ..< a.count]);
+		w += copy(buf[w..], a.digits[a.decimal_point .. a.count]);
 	} else {
-		w += copy(buf[w..], a.digits[0..<a.count]);
-		w += digit_zero(buf[w ..< w+a.decimal_point-a.count]);
+		w += copy(buf[w..], a.digits[0..a.count]);
+		w += digit_zero(buf[w .. w+a.decimal_point-a.count]);
 	}
 
-	return string(buf[0..<w]);
+	return string(buf[0..w]);
 }
 
 // trim trailing zeros
diff --git a/core/fmt.odin b/core/fmt.odin
index 45e4cbe60..9d1e93ba0 100644
--- a/core/fmt.odin
+++ b/core/fmt.odin
@@ -70,9 +70,9 @@ write_string :: proc(buf: ^StringBuffer, s: string) {
 write_bytes :: proc(buf: ^StringBuffer, data: []u8) {
 	match b in buf {
 	case StringBuffer.Static:
-		append(&b.buf, ..data);
+		append(&b.buf, ...data);
 	case StringBuffer.Dynamic:
-		append(&b.buf, ..data);
+		append(&b.buf, ...data);
 	}
 }
 write_byte :: proc(buf: ^StringBuffer, data: u8) {
@@ -90,43 +90,43 @@ write_rune :: proc(buf: ^StringBuffer, r: rune) {
 	}
 
 	b, n := utf8.encode_rune(r);
-	write_bytes(buf, b[0..<n]);
+	write_bytes(buf, b[..n]);
 }
 
 write_int :: proc(buf: ^StringBuffer, i: i128, base: int) {
 	b: [129]u8;
-	s := strconv.append_bits(b[0..<0], u128(i), base, true, 128, strconv.digits, 0);
+	s := strconv.append_bits(b[..0], u128(i), base, true, 128, strconv.digits, 0);
 	write_string(buf, s);
 }
 write_int :: proc(buf: ^StringBuffer, i: i64, base: int) {
 	b: [129]u8;
-	s := strconv.append_bits(b[0..<0], u128(i), base, true, 64, strconv.digits, 0);
+	s := strconv.append_bits(b[..0], u128(i), base, true, 64, strconv.digits, 0);
 	write_string(buf, s);
 }
 
 
 
-fprint :: proc(fd: os.Handle, args: ..any) -> int {
+fprint :: proc(fd: os.Handle, args: ...any) -> int {
 	data: [_BUFFER_SIZE]u8;
-	buf := make_string_buffer_from_slice(data[0..<0]);
-	sbprint(&buf, ..args);
+	buf := make_string_buffer_from_slice(data[..0]);
+	sbprint(&buf, ...args);
 	res := string_buffer_data(buf);
 	os.write(fd, res);
 	return len(res);
 }
 
-fprintln :: proc(fd: os.Handle, args: ..any) -> int {
+fprintln :: proc(fd: os.Handle, args: ...any) -> int {
 	data: [_BUFFER_SIZE]u8;
-	buf := make_string_buffer_from_slice(data[0..<0]);
-	sbprintln(&buf, ..args);
+	buf := make_string_buffer_from_slice(data[..0]);
+	sbprintln(&buf, ...args);
 	res := string_buffer_data(buf);
 	os.write(fd, res);
 	return len(res);
 }
-fprintf :: proc(fd: os.Handle, fmt: string, args: ..any) -> int {
+fprintf :: proc(fd: os.Handle, fmt: string, args: ...any) -> int {
 	data: [_BUFFER_SIZE]u8;
-	buf := make_string_buffer_from_slice(data[0..<0]);
-	sbprintf(&buf, fmt, ..args);
+	buf := make_string_buffer_from_slice(data[..0]);
+	sbprintf(&buf, fmt, ...args);
 	res := string_buffer_data(buf);
 	os.write(fd, res);
 	return len(res);
@@ -134,46 +134,46 @@ fprintf :: proc(fd: os.Handle, fmt: string, args: ..any) -> int {
 
 
 // print* procedures return the number of bytes written
-print       :: proc(args: ..any)              -> int { return fprint(os.stdout, ..args); }
-print_err   :: proc(args: ..any)              -> int { return fprint(os.stderr, ..args); }
-println     :: proc(args: ..any)              -> int { return fprintln(os.stdout, ..args); }
-println_err :: proc(args: ..any)              -> int { return fprintln(os.stderr, ..args); }
-printf      :: proc(fmt: string, args: ..any) -> int { return fprintf(os.stdout, fmt, ..args); }
-printf_err  :: proc(fmt: string, args: ..any) -> int { return fprintf(os.stderr, fmt, ..args); }
+print       :: proc(args: ...any)              -> int { return fprint(os.stdout, ...args); }
+print_err   :: proc(args: ...any)              -> int { return fprint(os.stderr, ...args); }
+println     :: proc(args: ...any)              -> int { return fprintln(os.stdout, ...args); }
+println_err :: proc(args: ...any)              -> int { return fprintln(os.stderr, ...args); }
+printf      :: proc(fmt: string, args: ...any) -> int { return fprintf(os.stdout, fmt, ...args); }
+printf_err  :: proc(fmt: string, args: ...any) -> int { return fprintf(os.stderr, fmt, ...args); }
 
 
 // aprint* procedures return a string that was allocated with the current context
 // They must be freed accordingly
-aprint :: proc(args: ..any) -> string {
+aprint :: proc(args: ...any) -> string {
 	buf := make_string_dynamic_buffer();
-	sbprint(&buf, ..args);
+	sbprint(&buf, ...args);
 	return to_string(buf);
 }
-aprintln :: proc(args: ..any) -> string {
+aprintln :: proc(args: ...any) -> string {
 	buf := make_string_dynamic_buffer();
-	sbprintln(&buf, ..args);
+	sbprintln(&buf, ...args);
 	return to_string(buf);
 }
-aprintf :: proc(fmt: string, args: ..any) -> string {
+aprintf :: proc(fmt: string, args: ...any) -> string {
 	buf := make_string_dynamic_buffer();
-	sbprintf(&buf, fmt, ..args);
+	sbprintf(&buf, fmt, ...args);
 	return to_string(buf);
 }
 
 
 // bprint* procedures return a string that was allocated with the current context
 // They must be freed accordingly
-bprint :: proc(buf: []u8, args: ..any) -> string {
-	sb := make_string_buffer_from_slice(buf[0..<0..<len(buf)]);
-	return sbprint(&sb, ..args);
+bprint :: proc(buf: []u8, args: ...any) -> string {
+	sb := make_string_buffer_from_slice(buf[..0..len(buf)]);
+	return sbprint(&sb, ...args);
 }
-bprintln :: proc(buf: []u8, args: ..any) -> string {
-	sb := make_string_buffer_from_slice(buf[0..<0..<len(buf)]);
-	return sbprintln(&sb, ..args);
+bprintln :: proc(buf: []u8, args: ...any) -> string {
+	sb := make_string_buffer_from_slice(buf[..0..len(buf)]);
+	return sbprintln(&sb, ...args);
 }
-bprintf :: proc(buf: []u8, fmt: string, args: ..any) -> string {
-	sb := make_string_buffer_from_slice(buf[0..<0..<len(buf)]);
-	return sbprintf(&sb, fmt, ..args);
+bprintf :: proc(buf: []u8, fmt: string, args: ...any) -> string {
+	sb := make_string_buffer_from_slice(buf[..0..len(buf)]);
+	return sbprintf(&sb, fmt, ...args);
 }
 
 
@@ -183,7 +183,7 @@ bprintf :: proc(buf: []u8, fmt: string, args: ..any) -> string {
 
 fprint_type :: proc(fd: os.Handle, info: ^TypeInfo) {
 	data: [_BUFFER_SIZE]u8;
-	buf := make_string_buffer_from_slice(data[0..<0]);
+	buf := make_string_buffer_from_slice(data[..0]);
 	write_type(&buf, info);
 	os.write(fd, string_buffer_data(buf));
 }
@@ -328,7 +328,7 @@ write_type :: proc(buf: ^StringBuffer, ti: ^TypeInfo) {
 			variant := variant_type.(^Struct);
 
 			vc := len(variant.names)-len(cf.names);
-			for j in 0..<vc {
+			for j in 0..vc {
 				if j > 0 do write_string(buf, ", ");
 				index := j + len(cf.names);
 				write_string(buf, variant.names[index]);
@@ -404,7 +404,7 @@ _arg_number :: proc(fi: ^FmtInfo, arg_index: int, format: string, offset, arg_co
 			return 0, 1, false;
 		}
 
-		for i in 1..len(format) {
+		for i in 1...len(format) {
 			if format[i] == ']' {
 				width, new_index, ok := _parse_int(format, 1);
 				if !ok || new_index != i {
@@ -486,7 +486,7 @@ fmt_write_padding :: proc(fi: ^FmtInfo, width: int) {
 
 	pad_byte: u8 = fi.space ? ' ' : '0';
 
-	for _ in 0..<width {
+	for _ in 0..width {
 		write_byte(fi.buf, pad_byte);
 	}
 }
@@ -535,7 +535,7 @@ _fmt_int :: proc(fi: ^FmtInfo, u: u128, base: int, is_signed: bool, bit_size: in
 	if fi.hash && !fi.zero do flags |= strconv.IntFlag.Prefix;
 	if fi.plus             do flags |= strconv.IntFlag.Plus;
 	if fi.space            do flags |= strconv.IntFlag.Space;
-	s := strconv.append_bits(buf[start..<start], u128(u), base, is_signed, bit_size, digits, flags);
+	s := strconv.append_bits(buf[start..start], u128(u), base, is_signed, bit_size, digits, flags);
 
 	if fi.hash && fi.zero {
 		c: u8;
@@ -622,8 +622,8 @@ fmt_float :: proc(fi: ^FmtInfo, v: f64, bit_size: int, verb: rune) {
 		prec: int = fi.prec_set ? fi.prec : 3;
 		buf: [386]u8;
 
-		str := strconv.append_float(buf[1..<1], v, 'f', prec, bit_size);
-		str = string(buf[0..len(str)]);
+		str := strconv.append_float(buf[1..1], v, 'f', prec, bit_size);
+		str = string(buf[...len(str)]);
 		if str[1] == '+' || str[1] == '-' {
 			str = str[1..];
 		} else {
@@ -665,7 +665,7 @@ fmt_string :: proc(fi: ^FmtInfo, s: string, verb: rune) {
 		fi.space = false;
 		defer fi.space = space;
 
-		for i in 0..<len(s) {
+		for i in 0..len(s) {
 			if i > 0 && space do write_byte(fi.buf, ' ');
 			_fmt_int(fi, u128(s[i]), 16, false, 8, verb == 'x' ? __DIGITS_LOWER : __DIGITS_UPPER);
 		}
@@ -812,7 +812,7 @@ fmt_value :: proc(fi: ^FmtInfo, v: any, verb: rune) {
 	case Array:
 		write_byte(fi.buf, '[');
 		defer write_byte(fi.buf, ']');
-		for i in 0..<info.count {
+		for i in 0..info.count {
 			if i > 0 do write_string(fi.buf, ", ");
 
 			data := ^u8(v.data) + i*info.elem_size;
@@ -823,7 +823,7 @@ fmt_value :: proc(fi: ^FmtInfo, v: any, verb: rune) {
 		write_byte(fi.buf, '[');
 		defer write_byte(fi.buf, ']');
 		array := ^raw.DynamicArray(v.data);
-		for i in 0..<array.len {
+		for i in 0..array.len {
 			if i > 0 do write_string(fi.buf, ", ");
 
 			data := ^u8(array.data) + i*info.elem_size;
@@ -845,7 +845,7 @@ fmt_value :: proc(fi: ^FmtInfo, v: any, verb: rune) {
 		write_byte(fi.buf, '<');
 		defer write_byte(fi.buf, '>');
 
-		for i in 0..<info.count {
+		for i in 0..info.count {
 			if i > 0 do write_string(fi.buf, ", ");
 
 			data := ^u8(v.data) + i*info.elem_size;
@@ -867,7 +867,7 @@ fmt_value :: proc(fi: ^FmtInfo, v: any, verb: rune) {
 		entry_type := ed.elem.(^Struct);
 		entry_size := ed.elem_size;
 
-		for i in 0..<entries.len {
+		for i in 0..entries.len {
 			if i > 0 do write_string(fi.buf, ", ");
 
 			data := ^u8(entries.data) + i*entry_size;
@@ -1008,7 +1008,7 @@ fmt_arg :: proc(fi: ^FmtInfo, arg: any, verb: rune) {
 
 
 
-sbprint :: proc(buf: ^StringBuffer, args: ..any) -> string {
+sbprint :: proc(buf: ^StringBuffer, args: ...any) -> string {
 	fi: FmtInfo;
 	prev_string := false;
 
@@ -1025,7 +1025,7 @@ sbprint :: proc(buf: ^StringBuffer, args: ..any) -> string {
 	return to_string(buf^);
 }
 
-sbprintln :: proc(buf: ^StringBuffer, args: ..any) -> string {
+sbprintln :: proc(buf: ^StringBuffer, args: ...any) -> string {
 	fi: FmtInfo;
 	fi.buf = buf;
 
@@ -1038,7 +1038,7 @@ sbprintln :: proc(buf: ^StringBuffer, args: ..any) -> string {
 	return to_string(buf^);
 }
 
-sbprintf :: proc(b: ^StringBuffer, fmt: string, args: ..any) -> string {
+sbprintf :: proc(b: ^StringBuffer, fmt: string, args: ...any) -> string {
 	fi: FmtInfo;
 	arg_index: int = 0;
 	end := len(fmt);
@@ -1053,7 +1053,7 @@ sbprintf :: proc(b: ^StringBuffer, fmt: string, args: ..any) -> string {
 			i++;
 		}
 		if i > prev_i {
-			write_string(b, fmt[prev_i..<i]);
+			write_string(b, fmt[prev_i..i]);
 		}
 		if i >= end {
 			break;
diff --git a/core/hash.odin b/core/hash.odin
index ca1c6cbf7..5747776a5 100644
--- a/core/hash.odin
+++ b/core/hash.odin
@@ -175,7 +175,7 @@ murmur64 :: proc(data: []u8) -> u64 {
 		}
 
 		// TODO(bill): Fix this
-		#no_bounds_check data8 := slice_to_bytes(data32[i..])[0..<3];
+		#no_bounds_check data8 := slice_to_bytes(data32[i..])[..3];
 		match len {
 		case 3:
 			h2 ~= u32(data8[2]) << 16;
diff --git a/core/math.odin b/core/math.odin
index 8fdd51cbd..e3f525fc0 100644
--- a/core/math.odin
+++ b/core/math.odin
@@ -158,8 +158,8 @@ mat4_identity :: proc() -> Mat4 {
 }
 
 mat4_transpose :: proc(m: Mat4) -> Mat4 {
-	for j in 0..<4 {
-		for i in 0..<4 {
+	for j in 0..4 {
+		for i in 0..4 {
 			m[i][j], m[j][i] = m[j][i], m[i][j];
 		}
 	}
@@ -168,8 +168,8 @@ mat4_transpose :: proc(m: Mat4) -> Mat4 {
 
 mul :: proc(a, b: Mat4) -> Mat4 {
 	c: Mat4;
-	for j in 0..<4 {
-		for i in 0..<4 {
+	for j in 0..4 {
+		for i in 0..4 {
 			c[j][i] = a[0][i]*b[j][0] +
 			          a[1][i]*b[j][1] +
 			          a[2][i]*b[j][2] +
diff --git a/core/mem.odin b/core/mem.odin
index dfd15c138..705f30401 100644
--- a/core/mem.odin
+++ b/core/mem.odin
@@ -110,7 +110,7 @@ ArenaTempMemory :: struct {
 
 init_arena_from_memory :: proc(using a: ^Arena, data: []u8) {
 	backing    = Allocator{};
-	memory     = data[0..<0];
+	memory     = data[..0];
 	temp_count = 0;
 }
 
@@ -183,7 +183,7 @@ begin_arena_temp_memory :: proc(a: ^Arena) -> ArenaTempMemory {
 end_arena_temp_memory :: proc(using tmp: ArenaTempMemory) {
 	assert(len(arena.memory) >= original_count);
 	assert(arena.temp_count > 0);
-	arena.memory = arena.memory[0..<original_count];
+	arena.memory = arena.memory[..original_count];
 	arena.temp_count--;
 }
 
diff --git a/core/opengl.odin b/core/opengl.odin
index 4141549c5..6ad1d5700 100644
--- a/core/opengl.odin
+++ b/core/opengl.odin
@@ -45,7 +45,7 @@ _libgl := win32.load_library_a(_string_data("opengl32.dll\x00"));
 
 get_proc_address :: proc(name: string) -> rawptr {
 	if name[len(name)-1] == 0 {
-		name = name[0..<len(name)-1];
+		name = name[..len(name)-1];
 	}
 	// NOTE(bill): null terminated
 	assert((&name[0] + len(name))^ == 0);
diff --git a/core/os.odin b/core/os.odin
index d2b5376a2..f7cec9586 100644
--- a/core/os.odin
+++ b/core/os.odin
@@ -34,7 +34,7 @@ read_entire_file :: proc(name: string) -> ([]u8, bool) {
 		free(data);
 		return nil, false;
 	}
-	return data[0..<bytes_read], true;
+	return data[0..bytes_read], true;
 }
 
 write_entire_file :: proc(name: string, data: []u8) -> bool {
diff --git a/core/os_windows.odin b/core/os_windows.odin
index 443ab909d..3144089a0 100644
--- a/core/os_windows.odin
+++ b/core/os_windows.odin
@@ -301,7 +301,7 @@ _alloc_command_line_arguments :: proc() -> []string {
 			}
 		}
 
-		return string(buf[0..<i]);
+		return string(buf[..i]);
 	}
 
 	arg_count: i32;
diff --git a/core/sort.odin b/core/sort.odin
index d81ee38dc..3eb6b5110 100644
--- a/core/sort.odin
+++ b/core/sort.odin
@@ -7,7 +7,7 @@ bubble_sort :: proc(array: []$T, f: proc(T, T) -> int) {
 	for {
 		init_swap, prev_swap := -1, -1;
 
-		for j in init_j..<last_j {
+		for j in init_j..last_j {
 			if f(array[j], array[j+1]) > 0 {
 				array[j], array[j+1] = array[j+1], array[j];
 				prev_swap = j;
@@ -30,7 +30,7 @@ bubble_sort :: proc(array: []$T) {
 	for {
 		init_swap, prev_swap := -1, -1;
 
-		for j in init_j..<last_j {
+		for j in init_j..last_j {
 			if array[j] > array[j+1] {
 				array[j], array[j+1] = array[j+1], array[j];
 				prev_swap = j;
@@ -65,8 +65,8 @@ quick_sort :: proc(array: []$T, f: proc(T, T) -> int) {
 		j -= 1;
 	}
 
-	quick_sort(a[0..<i], f);
-	quick_sort(a[i..<n], f);
+	quick_sort(a[0..i], f);
+	quick_sort(a[i..n], f);
 }
 
 quick_sort :: proc(array: []$T) {
@@ -88,8 +88,8 @@ quick_sort :: proc(array: []$T) {
 		j -= 1;
 	}
 
-	quick_sort(a[0..<i]);
-	quick_sort(a[i..<n]);
+	quick_sort(a[0..i]);
+	quick_sort(a[i..n]);
 }
 
 _log2 :: proc(n: int) -> int {
@@ -102,7 +102,7 @@ merge_sort :: proc(array: []$T, f: proc(T, T) -> int) {
 	merge_slices :: proc(arr1, arr2, out: []$T, f: proc(T, T) -> int) {
 		N1, N2 := len(arr1), len(arr2);
 		i, j := 0, 0;
-		for k in 0..<N1+N2 {
+		for k in 0..N1+N2 {
 			if j == N2 || i < N1 && j < N2 && f(arr1[i], arr2[j]) < 0 {
 				out[k] = arr1[i]; i++;
 			} else {
@@ -120,16 +120,16 @@ merge_sort :: proc(array: []$T, f: proc(T, T) -> int) {
 
 	a, b, m, M := N/2, N, 1, _log2(N);
 
-	for i in 0..<M+1 {
-		for j in 0..<a {
+	for i in 0..M+1 {
+		for j in 0..a {
 			k := 2*j*m;
-			merge_slices(arr1[k..<k+m], arr1[k+m..<k+m+m], arr2[k..], f);
+			merge_slices(arr1[k..k+m], arr1[k+m..k+m+m], arr2[k..], f);
 		}
 		if N-b > m {
 			k := 2*a*m;
-			merge_slices(arr1[k..<k+m], arr1[k+m..<k+m+(N-b)&(m-1)], arr2[k..], f);
+			merge_slices(arr1[k..k+m], arr1[k+m..k+m+(N-b)&(m-1)], arr2[k..], f);
 		} else {
-			copy(arr2[b..N-1], arr1[b..N-1]);
+			copy(arr2[b..N], arr1[b..N]);
 		}
 		arr1, arr2 = arr2, arr1;
 		m <<= 1;
@@ -144,7 +144,7 @@ merge_sort :: proc(array: []$T) {
 	merge_slices :: proc(arr1, arr2, out: []$T) {
 		N1, N2 := len(arr1), len(arr2);
 		i, j := 0, 0;
-		for k in 0..<N1+N2 {
+		for k in 0..N1+N2 {
 			if j == N2 || i < N1 && j < N2 && arr1[i] < arr2[j] {
 				out[k] = arr1[i]; i++;
 			} else {
@@ -160,16 +160,16 @@ merge_sort :: proc(array: []$T) {
 
 	a, b, m, M := N/2, N, 1, _log2(N);
 
-	for i in 0..<M+1 {
-		for j in 0..<a {
+	for i in 0..M+1 {
+		for j in 0..a {
 			k := 2*j*m;
-			merge_slices(arr1[k..<k+m], arr1[k+m..<k+m+m], arr2[k..]);
+			merge_slices(arr1[k..k+m], arr1[k+m..k+m+m], arr2[k..]);
 		}
 		if N-b > m {
 			k := 2*a*m;
-			merge_slices(arr1[k..<k+m], arr1[k+m..<k+m+(N-b)&(m-1)], arr2[k..]);
+			merge_slices(arr1[k..k+m], arr1[k+m..k+m+(N-b)&(m-1)], arr2[k..]);
 		} else {
-			copy(arr2[b..N-1], arr1[b..N-1]);
+			copy(arr2[b..N], arr1[b..N]);
 		}
 		arr1, arr2 = arr2, arr1;
 		m <<= 1;
diff --git a/core/strconv.odin b/core/strconv.odin
index d3d6d193b..c4c5787a9 100644
--- a/core/strconv.odin
+++ b/core/strconv.odin
@@ -191,7 +191,7 @@ parse_f64 :: proc(s: string) -> f64 {
 
 append_bool :: proc(buf: []u8, b: bool) -> string {
 	s := b ? "true" : "false";
-	append(&buf, ..[]u8(s));
+	append(&buf, ...[]u8(s));
 	return string(buf);
 }
 
@@ -257,7 +257,7 @@ generic_ftoa :: proc(buf: []u8, val: f64, fmt: u8, prec, bit_size: int) -> []u8
 		} else {
 			s = "+Inf";
 		}
-		append(&buf, ..[]u8(s));
+		append(&buf, ...[]u8(s));
 		return buf;
 
 	case 0: // denormalized
@@ -309,7 +309,7 @@ format_digits :: proc(buf: []u8, shortest: bool, neg: bool, digs: DecimalSlice,
 		// integer, padded with zeros when needed
 		if digs.decimal_point > 0 {
 			m := min(digs.count, digs.decimal_point);
-			append(&buf, ..digs.digits[0..<m]);
+			append(&buf, ...digs.digits[..m]);
 			for ; m < digs.decimal_point; m++ {
 				append(&buf, '0');
 			}
@@ -321,7 +321,7 @@ format_digits :: proc(buf: []u8, shortest: bool, neg: bool, digs: DecimalSlice,
 		// fractional part
 		if prec > 0 {
 			append(&buf, '.');
-			for i in 0..<prec {
+			for i in 0..prec {
 				c: u8 = '0';
 				if j := digs.decimal_point + i; 0 <= j && j < digs.count {
 					c = digs.digits[j];
@@ -342,7 +342,7 @@ format_digits :: proc(buf: []u8, shortest: bool, neg: bool, digs: DecimalSlice,
 	}
 
 	c := [2]u8{'%', fmt};
-	append(&buf, ..c[..]);
+	append(&buf, ...c[..]);
 	return buf;
 }
 
@@ -383,7 +383,7 @@ round_shortest :: proc(d: ^Decimal, mant: u64, exp: int, flt: ^Float_Info) {
 
 	inclusive := mant%2 == 0;
 
-	for i in 0..<d.count {
+	for i in 0..d.count {
 		l: u8 = '0'; // lower digit
 		if i < lower.count {
 			l = lower.digits[i];
@@ -492,7 +492,7 @@ append_bits :: proc(buf: []u8, u: u128, base: int, is_signed: bool, bit_size: in
 		i--; a[i] = ' ';
 	}
 
-	append(&buf, ..a[i..]);
+	append(&buf, ...a[i..]);
 	return string(buf);
 }
 
diff --git a/core/strings.odin b/core/strings.odin
index ddaeb4f96..1ca1c1497 100644
--- a/core/strings.odin
+++ b/core/strings.odin
@@ -4,7 +4,7 @@ new_string :: proc(s: string) -> string {
 	c := make([]u8, len(s)+1);
 	copy(c, []u8(s));
 	c[len(s)] = 0;
-	return string(c[0..<len(s)]);
+	return string(c[..len(s)]);
 }
 
 new_c_string :: proc(s: string) -> ^u8 {
diff --git a/core/utf16.odin b/core/utf16.odin
index 8d3108fa4..959dd7bcd 100644
--- a/core/utf16.odin
+++ b/core/utf16.odin
@@ -36,7 +36,7 @@ encode :: proc(d: []u16, s: []rune) {
 
 	for r in s {
 		match r {
-		case 0..<_surr1, _surr3..<_surr_self:
+		case 0.._surr1, _surr3.._surr_self:
 			d[n] = u16(r);
 			n++;
 
diff --git a/core/utf8.odin b/core/utf8.odin
index 28c5bc932..50d3c4cdb 100644
--- a/core/utf8.odin
+++ b/core/utf8.odin
@@ -160,7 +160,7 @@ decode_last_rune :: proc(s: []u8) -> (rune, int) {
 	}
 
 	start = max(start, 0);
-	r, size = decode_rune(s[start..<end]);
+	r, size = decode_rune(s[start..end]);
 	if start+size != end {
 		return RUNE_ERROR, 1;
 	}