Terminal background color stuck on red after crash

[metrue]

Description

When pasting a large amount of text into the Claude Code input in Neovim, the Claude Code window crashes and exits immediately. Upon reopening with :ClaudeCode, the terminal buffer has a persistent red background that cannot be cleared.

Steps to Reproduce

1. Open Neovim
2. Run :ClaudeCode to open Claude Code
3. Paste a very large text into the input field
4. Claude Code crashes and exits
5. Run :ClaudeCode again
6. The Claude Code window now has a red background

Expected Behavior

The Claude Code window should display with normal colors after reopening, or gracefully handle large input without crashing.

Actual Behavior

• The window crashes when large text is pasted
• After reopening, the output area has a bright red background
• Other Neovim windows in the same session display correctly
• Workarounds like :bd!, reset, Ctrl-l, and terminal reset escape sequences do not fix the issue

Environment

• OS: macOS (Darwin 24.6.0)
• Neovim: v0.11.5
• Claude Code version: 2.0.72

Screenshots

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🔗 Similar Issues

Related Issues

• [BUG] Claude Code split doesn't maintain ratio after creating/removing split from the other/nvim window #49
• [BUG] Floating window does not respect background style #68
• [BUG] Embedded Claude Code version does not auto-update #67
• [FEATURE] Add <esc> key configuration for interrupting Claude #16

👤 Suggested Assignees

• pauldthomson
• janderland
• twilwa
• kylesnowschwartz

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[metrue]

I resolved by this changes in my nvim plugin.

diff --git a/lua/core/autocmds.lua b/lua/core/autocmds.lua
index e9b71aa..82ef145 100644
--- a/lua/core/autocmds.lua
+++ b/lua/core/autocmds.lua
@@ -10,14 +10,26 @@ aucmd("BufReadPost", {
   end
 })

--- Highlight trailing whitespace
+-- Highlight trailing whitespace (skip terminal buffers)
 aucmd({ "BufWinEnter", "ColorScheme" }, {
   callback = function()
+    if vim.bo.buftype == "terminal" then
+      return
+    end
     vim.cmd("highlight ExtraWhitespace ctermbg=red guibg=red")
     vim.cmd("match ExtraWhitespace /\\s\\+$/")
   end
 })

+-- Clear match highlighting in terminal buffers
+aucmd({ "TermOpen", "TermEnter", "BufEnter" }, {
+  callback = function()
+    if vim.bo.buftype == "terminal" then
+      vim.fn.clearmatches()
+    end
+  end
+})
+
 -- Auto-create directories on save
 aucmd("BufWritePre", {
   callback = function(event)