From 3a6b6f1e26471d8090a9ee094f87d249017b39d0 Mon Sep 17 00:00:00 2001
From: Emil Lerch <emil@lerch.org>
Date: Tue, 10 Mar 2026 15:18:12 -0700
Subject: [PATCH] upper case symbol from user

---
 src/main.zig | 5 +++++
 src/tui.zig  | 5 ++---
 2 files changed, 7 insertions(+), 3 deletions(-)

diff --git a/src/main.zig b/src/main.zig
index 8c61da4..d5a4b94 100644
--- a/src/main.zig
+++ b/src/main.zig
@@ -103,6 +103,11 @@ pub fn main() !u8 {
     var svc = zfin.DataService.init(allocator, config);
     defer svc.deinit();
 
+    // Normalize symbol to uppercase (e.g. "aapl" -> "AAPL")
+    if (args.len >= 3) {
+        for (args[2]) |*c| c.* = std.ascii.toUpper(c.*);
+    }
+
     if (std.mem.eql(u8, command, "perf")) {
         if (args.len < 3) {
             try cli.stderrPrint("Error: 'perf' requires a symbol argument\n");
diff --git a/src/tui.zig b/src/tui.zig
index 1627e3f..82667e6 100644
--- a/src/tui.zig
+++ b/src/tui.zig
@@ -476,9 +476,7 @@ const App = struct {
         }
         if (key.codepoint == vaxis.Key.enter) {
             if (self.input_len > 0) {
-                for (self.input_buf[0..self.input_len]) |*ch| {
-                    if (ch.* >= 'a' and ch.* <= 'z') ch.* = ch.* - 32;
-                }
+                for (self.input_buf[0..self.input_len]) |*ch| ch.* = std.ascii.toUpper(ch.*);
                 @memcpy(self.symbol_buf[0..self.input_len], self.input_buf[0..self.input_len]);
                 self.symbol = self.symbol_buf[0..self.input_len];
                 self.symbol_owned = true;
@@ -895,6 +893,7 @@ const App = struct {
     fn setActiveSymbol(self: *App, sym: []const u8) void {
         const len = @min(sym.len, self.symbol_buf.len);
         @memcpy(self.symbol_buf[0..len], sym[0..len]);
+        for (self.symbol_buf[0..len]) |*c| c.* = std.ascii.toUpper(c.*);
         self.symbol = self.symbol_buf[0..len];
         self.symbol_owned = true;
         self.has_explicit_symbol = true;