diff --git a/.gitmodules b/.gitmodules
index 74cac9a..1aaf5f4 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,7 +1,3 @@
-[submodule "lib/grapheme.c3l/thirdparty/libgrapheme"]
-	path = lib/grapheme.c3l/thirdparty/libgrapheme
-	url = git://git.suckless.org/libgrapheme
-	ignore = dirty
 [submodule "lib/schrift.c3l/thirdparty/libschrift"]
 	path = lib/schrift.c3l/thirdparty/libschrift
 	url = https://github.com/tomolt/libschrift
diff --git a/lib/grapheme.c3l/Makefile b/lib/grapheme.c3l/Makefile
deleted file mode 100644
index 09193f1..0000000
--- a/lib/grapheme.c3l/Makefile
+++ /dev/null
@@ -1,4 +0,0 @@
-all:
-	make -C thirdparty/libgrapheme
-	mkdir -p linux-x64
-	cp thirdparty/libgrapheme/libgrapheme.a linux-x64/libgrapheme.a
diff --git a/lib/grapheme.c3l/libgrapheme.c3i b/lib/grapheme.c3l/libgrapheme.c3i
deleted file mode 100644
index 6b1c7fc..0000000
--- a/lib/grapheme.c3l/libgrapheme.c3i
+++ /dev/null
@@ -1,46 +0,0 @@
-module grapheme;
-
-const uint GRAPHEME_INVALID_CODEPOINT = 0xFFFD;
-
-enum BidirectionalDirection {
-	GRAPHEME_BIDIRECTIONAL_DIRECTION_NEUTRAL,
-	GRAPHEME_BIDIRECTIONAL_DIRECTION_LTR,
-	GRAPHEME_BIDIRECTIONAL_DIRECTION_RTL,
-}
-
-fn isz bidirectional_get_line_embedding_levels(uint *, isz, ichar *, isz) @extern("grapheme_bidirectional_get_line_embedding_levels");
-
-fn isz bidirectional_preprocess_paragraph(uint *, isz, BidirectionalDirection, uint *, isz, BidirectionalDirection *) @extern("grapheme_bidirectional_preprocess_paragraph");
-
-fn isz bidirectional_reorder_line(uint *, uint *, isz, uint *, isz) @extern("grapheme_bidirectional_reorder_line");
-
-fn isz decode_utf8(char *, isz, uint *) @extern("grapheme_decode_utf8");
-fn isz encode_utf8(uint, char *, isz) @extern("grapheme_encode_utf8");
-
-fn bool is_character_break(uint, uint, ushort *) @extern("grapheme_is_character_break");
-
-fn bool is_lowercase(uint *, isz, isz *) @extern("grapheme_is_lowercase");
-fn bool is_titlecase(uint *, isz, isz *) @extern("grapheme_is_titlecase");
-fn bool is_uppercase(uint *, isz, isz *) @extern("grapheme_is_uppercase");
-
-fn bool is_lowercase_utf8(char *, isz, isz *) @extern("grapheme_is_lowercase_utf8");
-fn bool is_titlecase_utf8(char *, isz, isz *) @extern("grapheme_is_titlecase_utf8");
-fn bool is_uppercase_utf8(char *, isz, isz *) @extern("grapheme_is_uppercase_utf8");
-
-fn isz next_character_break(uint *, isz) @extern("grapheme_next_character_break");
-fn isz next_line_break(uint *, isz) @extern("grapheme_next_line_break");
-fn isz next_sentence_break(uint *, isz) @extern("grapheme_next_sentence_break");
-fn isz next_word_break(uint *, isz) @extern("grapheme_next_word_break");
-
-fn isz next_character_break_utf8(char *, isz) @extern("grapheme_next_character_break_utf8");
-fn isz next_line_break_utf8(char *, isz) @extern("grapheme_next_line_break_utf8");
-fn isz next_sentence_break_utf8(char *, isz) @extern("grapheme_next_sentence_break_utf8");
-fn isz next_word_break_utf8(char *, isz) @extern("grapheme_next_word_break_utf8");
-
-fn isz to_lowercase(uint *, isz, uint *, isz) @extern("grapheme_to_lowercase");
-fn isz to_titlecase(uint *, isz, uint *, isz) @extern("grapheme_to_titlecase");
-fn isz to_uppercase(uint *, isz, uint *, isz) @extern("grapheme_to_uppercase");
-
-fn isz to_lowercase_utf8(char *, isz, char *, isz) @extern("grapheme_to_lowercase_utf8");
-fn isz to_titlecase_utf8(char *, isz, char *, isz) @extern("grapheme_to_titlecase_utf8");
-fn isz to_uppercase_utf8(char *, isz, char *, isz) @extern("grapheme_to_uppercase_utf8");
diff --git a/lib/grapheme.c3l/manifest.json b/lib/grapheme.c3l/manifest.json
deleted file mode 100644
index 97f04d0..0000000
--- a/lib/grapheme.c3l/manifest.json
+++ /dev/null
@@ -1,9 +0,0 @@
-{
-  "provides": "grapheme",
-  "targets": {
-    "linux-x64": {
-      "dependencies": [],
-      "linked-libraries": ["grapheme", "c"]
-    }
-  }
-}
diff --git a/lib/grapheme.c3l/project.json b/lib/grapheme.c3l/project.json
deleted file mode 100644
index 4b2d212..0000000
--- a/lib/grapheme.c3l/project.json
+++ /dev/null
@@ -1,14 +0,0 @@
-{
-  "langrev": "1",
-  "warnings": ["no-unused"],
-  "dependency-search-paths": [".."],
-  "dependencies": ["grapheme"],
-  "authors": ["Alessandro Mauri <alemauri001@gmail.com>", "Laslo Hunhold <dev@frign.de>"],
-  "version": "0.1.0",
-  "sources": [],
-  "output": "build",
-  "target": "linux-x64",
-  "features": [],
-  "cpu": "generic",
-  "opt": "O0"
-}
diff --git a/lib/grapheme.c3l/thirdparty/libgrapheme b/lib/grapheme.c3l/thirdparty/libgrapheme
deleted file mode 160000
index 65b354f..0000000
--- a/lib/grapheme.c3l/thirdparty/libgrapheme
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit 65b354f0fcb1d925f4340dbb4415ea06e8af2bec
diff --git a/lib/ugui.c3l/manifest.json b/lib/ugui.c3l/manifest.json
index 813ed39..e34f342 100644
--- a/lib/ugui.c3l/manifest.json
+++ b/lib/ugui.c3l/manifest.json
@@ -4,7 +4,7 @@
   "targets" : {
     "linux-x64" : {
       "link-args" : [],
-      "dependencies" : ["schrift", "grapheme"],
+      "dependencies" : ["schrift"],
       "linked-libraries" : []
     }
   }
diff --git a/lib/ugui.c3l/src/input.c3 b/lib/ugui.c3l/src/input.c3
index 5a134c8..41fc703 100644
--- a/lib/ugui.c3l/src/input.c3
+++ b/lib/ugui.c3l/src/input.c3
@@ -1,10 +1,10 @@
 module ugui;
 
-import grapheme;
 import std::io;
 import std::math;
 import std::core::string;
 
+
 bitstruct InputEvents : uint {
 	bool resize       : 0; // window size was changed
 	bool change_focus : 1; // window focus changed
@@ -71,6 +71,7 @@ const MouseButtons BTN_5      = {.btn_5      = true};
 
 const ModKeys KEY_ANY = (ModKeys)(ModKeys.inner.max);
 
+<* @param [&inout] ctx *>
 fn bool Ctx.check_key_combo(&ctx, ModKeys mod, String ...keys)
 {
 	bool is_mod = (bool)(ctx.current_input.keyboard.modkeys & mod);
@@ -83,6 +84,7 @@ fn bool Ctx.check_key_combo(&ctx, ModKeys mod, String ...keys)
 }
 
 // Window size was changed
+<* @param [&inout] ctx *>
 fn void? Ctx.input_window_size(&ctx, short width, short height)
 {
 	if (width <= 0 || height <= 0) {
@@ -94,6 +96,7 @@ fn void? Ctx.input_window_size(&ctx, short width, short height)
 }
 
 // Window gained/lost focus
+<* @param [&inout] ctx *>
 fn void Ctx.input_changefocus(&ctx, bool has_focus)
 {
 	// FIXME: raylib only has an API to query the focus status so we have to
@@ -113,6 +116,7 @@ macro Ctx.is_mouse_released(&ctx, MouseButtons btn) => (ctx.mouse_released() & b
 macro Ctx.is_mouse_down(&ctx, MouseButtons btn) => (ctx.mouse_down() & btn) != BTN_NONE;
 
 // Mouse Buttons down
+<* @param [&inout] ctx *>
 fn void Ctx.input_mouse_button(&ctx, MouseButtons buttons)
 {
 	ctx.current_input.mouse.updated = ctx.current_input.mouse.down ^ buttons;
@@ -121,6 +125,7 @@ fn void Ctx.input_mouse_button(&ctx, MouseButtons buttons)
 }
 
 // Mouse was moved, report absolute position
+<* @param [&inout] ctx *>
 fn void Ctx.input_mouse_abs(&ctx, short x, short y)
 {
 	ctx.current_input.mouse.pos.x = math::clamp(x, (short)0, ctx.width);
@@ -137,6 +142,7 @@ fn void Ctx.input_mouse_abs(&ctx, short x, short y)
 }
 
 // Mouse was moved, report relative motion
+<* @param [&inout] ctx *>
 fn void Ctx.input_mouse_delta(&ctx, short dx, short dy)
 {
 	ctx.current_input.mouse.delta.x = dx;
@@ -152,6 +158,7 @@ fn void Ctx.input_mouse_delta(&ctx, short dx, short dy)
 	ctx.current_input.events.mouse_move = dx != 0 || dy != 0;
 }
 
+<* @param [&inout] ctx *>
 fn void Ctx.input_mouse_wheel(&ctx, short x, short y, float scale = 1.0)
 {
 	ctx.current_input.mouse.scroll.x = (short)((float)-x*scale);
@@ -159,25 +166,29 @@ fn void Ctx.input_mouse_wheel(&ctx, short x, short y, float scale = 1.0)
 	ctx.current_input.events.mouse_scroll = x !=0 || y != 0;
 }
 
+<* @param [&inout] ctx *>
 fn void Ctx.input_key_press(&ctx)
 {
 	ctx.current_input.events.key_press = true;
 }
 
+<* @param [&inout] ctx *>
 fn void Ctx.input_key_release(&ctx)
 {
 	ctx.current_input.events.key_release = true;
 }
 
+<* @param [&inout] ctx *>
 fn void Ctx.input_key_repeat(&ctx)
 {
 	ctx.current_input.events.key_repeat = true;
 }
 
 // append utf-8 encoded text to the context text input
+<* @param [&inout] ctx *>
 fn void Ctx.input_text_utf8(&ctx, char[] text)
 {
-	if (text.len == 0) { return; }
+	if (text == "") return;
 
 	usz remaining = ctx.current_input.keyboard.text.len - ctx.current_input.keyboard.text_len;
 	usz len = text.len > remaining ? remaining : text.len;
@@ -187,26 +198,24 @@ fn void Ctx.input_text_utf8(&ctx, char[] text)
 	ctx.current_input.events.text_input = true;
 }
 
-fn void Ctx.input_text_unicode(&ctx, char[] text)
+<*
+@param [&inout] ctx
+@param [in] text
+*>
+fn void? Ctx.input_text_unicode(&ctx, uint[] text)
 {
-	if (text.ptr == null || text.len == 0) { return; }
+	if (text.len == 0) return;
 
-	char[32] tmp;
 	usz remaining = ctx.current_input.keyboard.text.len - ctx.current_input.keyboard.text_len;
 	char[] s = ctx.current_input.keyboard.text[ctx.current_input.keyboard.text_len ..];
 
-	usz off;
-	foreach (idx, cp: text) {
-		if (off >= remaining) { break; }
-		usz enc = grapheme::encode_utf8(cp, tmp[..], tmp.len);
-		s[off..off+enc] = tmp[..enc];
-		off += enc;
-	}
+	usz off = conv::utf32to8(text, s)!;
 	ctx.current_input.keyboard.text_len += off;
 
 	ctx.current_input.events.text_input = true;
 }
 
+<* @param [&inout] ctx *>
 fn void Ctx.input_char(&ctx, char c)
 {
 	char[1] b = {c};
@@ -218,6 +227,7 @@ fn ModKeys Ctx.get_mod(&ctx) => ctx.input.keyboard.modkeys;
 
 // Modifier keys, like control or backspace
 // TODO: make this call repetible to input modkeys one by one
+<* @param [&inout] ctx *>
 fn void Ctx.input_mod_keys(&ctx, ModKeys modkeys)
 {
 	ctx.current_input.keyboard.modkeys = modkeys;