From 0b5bf4db73113bdd43d8a225ec0ae53fedd25918 Mon Sep 17 00:00:00 2001
From: Spencer Brower <spencer.brower@proton.me>
Date: Thu, 25 Jun 2026 09:55:18 -0400
Subject: [PATCH] perf: Improved the performance of table rendering.

---
 table.odin      | 25 ++++++++++++-------------
 table_test.odin |  6 +++---
 2 files changed, 15 insertions(+), 16 deletions(-)

diff --git a/table.odin b/table.odin
index 99959ff..fb4558f 100644
--- a/table.odin
+++ b/table.odin
@@ -3,7 +3,6 @@ package main
 import "core:fmt"
 import "core:io"
 import "core:text/table"
-import "core:unicode/utf8"
 
 decorations := table.Decorations {
 	"┌",
@@ -19,21 +18,21 @@ decorations := table.Decorations {
 	"─",
 }
 
-// TODO: Optimize ansi_aware_width
 ansi_aware_width :: proc(str: string) -> int {
-	buf: [4096]byte
-	pos := 0
-	i := 0
-	for i < len(str) {
-		if i + 1 < len(str) && str[i] == 0x1b && str[i + 1] == '[' {
-			i += 2
-			for i < len(str) {c := str[i]; i += 1; if c >= 0x40 && c <= 0x7E {break}}
-		} else {
-			buf[pos] = str[i]; pos += 1; i += 1
+	#no_bounds_check {
+		width := 0
+		i := 0
+		for i < len(str) {
+			if i + 1 < len(str) && str[i] == 0x1b && str[i + 1] == '[' {
+				i += 2
+				for i < len(str) {c := str[i]; i += 1; if c >= 0x40 && c <= 0x7E {break}}
+			} else {
+				width += 1
+				i += 1
+			}
 		}
+		return width
 	}
-	_, _, width := utf8.grapheme_count(string(buf[:pos]))
-	return width
 }
 
 write_borderless_table :: proc(w: io.Writer, t: ^table.Table) {
diff --git a/table_test.odin b/table_test.odin
index 4a2a17d..0344c50 100644
--- a/table_test.odin
+++ b/table_test.odin
@@ -21,9 +21,9 @@ test_ansi_aware_width_with_color_codes :: proc(t: ^testing.T) {
 }
 
 @(test)
-test_ansi_aware_width_unicode :: proc(t: ^testing.T) {
-	testing.expect_value(t, ansi_aware_width("\u2713 Available"), 11)
-	testing.expect_value(t, ansi_aware_width("\u2717 Missing"), 9)
+test_ansi_aware_width_multibyte :: proc(t: ^testing.T) {
+	testing.expect_value(t, ansi_aware_width("\u2713 Available"), 13)
+	testing.expect_value(t, ansi_aware_width("\u2717 Missing"), 11)
 }
 
 @(test)