From 3a3c6f0907445754a1d26ffc84788bbc88e038c5 Mon Sep 17 00:00:00 2001
From: "Justin M. Keyes" <justinkz@gmail.com>
Date: Mon, 23 Mar 2026 10:14:48 -0400
Subject: [PATCH] refactor: rename termcap.lua -> tty.lua #38437

Problem:
The `termcap.lua` module is too narrowly named. We may need a place for
tty-related functionality in the future.
https://github.com/neovim/neovim/pull/31399#discussion_r1882598297

Solution:
This isn't a public/documented interface, so just rename it.
---
 runtime/lua/vim/_core/defaults.lua       | 2 +-
 runtime/lua/vim/{termcap.lua => tty.lua} | 0
 runtime/plugin/osc52.lua                 | 2 +-
 src/nvim/tui/tui.c                       | 2 +-
 4 files changed, 3 insertions(+), 3 deletions(-)
 rename runtime/lua/vim/{termcap.lua => tty.lua} (100%)

diff --git a/runtime/lua/vim/_core/defaults.lua b/runtime/lua/vim/_core/defaults.lua
index 69c76118f2..c1e6d52366 100644
--- a/runtime/lua/vim/_core/defaults.lua
+++ b/runtime/lua/vim/_core/defaults.lua
@@ -1004,7 +1004,7 @@ do
         -- Neither the TUI nor $COLORTERM indicate that truecolor is supported, so query the
         -- terminal
         local caps = {} ---@type table<string, boolean>
-        require('vim.termcap').query({ 'Tc', 'RGB', 'setrgbf', 'setrgbb' }, function(cap, found)
+        require('vim.tty').query({ 'Tc', 'RGB', 'setrgbf', 'setrgbb' }, function(cap, found)
           if not found then
             return
           end
diff --git a/runtime/lua/vim/termcap.lua b/runtime/lua/vim/tty.lua
similarity index 100%
rename from runtime/lua/vim/termcap.lua
rename to runtime/lua/vim/tty.lua
diff --git a/runtime/plugin/osc52.lua b/runtime/plugin/osc52.lua
index a17ce14f5a..deeda7ad31 100644
--- a/runtime/plugin/osc52.lua
+++ b/runtime/plugin/osc52.lua
@@ -60,7 +60,7 @@ vim.api.nvim_create_autocmd('UIEnter', {
           end
 
           -- Fallback to XTGETTCAP
-          require('vim.termcap').query('Ms', function(cap, found, seq)
+          require('vim.tty').query('Ms', function(cap, found, seq)
             if not found then
               return
             end
diff --git a/src/nvim/tui/tui.c b/src/nvim/tui/tui.c
index 0febdb4dcd..a257827f82 100644
--- a/src/nvim/tui/tui.c
+++ b/src/nvim/tui/tui.c
@@ -2012,7 +2012,7 @@ static void terminfo_set_str(TUIData *tui, TerminfoDef str, const char *val)
 /// Determine if the terminal supports truecolor or not.
 ///
 /// note: We get another chance at detecting these in the nvim server process, see
-/// the use of vim.termcap in runtime/lua/vim/_core/defaults.lua
+/// the use of vim.tty in runtime/lua/vim/_core/defaults.lua
 ///
 /// If terminfo contains Tc, RGB, or both setrgbf and setrgbb capabilities, return true.
 static bool term_has_truecolor(TUIData *tui, const char *colorterm)