From 424f4cc0389ed883f220bd5cbab9c07b4955acde Mon Sep 17 00:00:00 2001
From: Avinash Thakur <19588421+80avin@users.noreply.github.com>
Date: Wed, 19 Mar 2025 20:17:59 +0530
Subject: fix(snippet): wrong indentation when snippet contains "^" #32970

## Problem
The pattern used to match indentation is wrong as can be seen in

```lua
-- current pattern doesn't match starting space
print(vim.inspect(("   xyz"):match("(^%s+)%S")))
-- nil

-- instead, it matches characters `^ ` in text
print(vim.inspect(("x^ yz"):match("(^%s+)%S")))
-- "^ "

-- indentation could've been matched by, however not required
print(vim.inspect(("   xyz"):match("^(%s+)%S")))
-- "   "
```

## Solution
We don't even need to modify `base_indent` at every line. If every line's indentation is calculated by the previous line's indentation (which already has starting indentation) added to the starting indentation, we see that indentation is multiplied on every line.

Hence, we only add the starting line indentation to every line.
---
 test/functional/lua/snippet_spec.lua | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'test/functional/lua')

diff --git a/test/functional/lua/snippet_spec.lua b/test/functional/lua/snippet_spec.lua
index be18fe7898..724437f0b2 100644
--- a/test/functional/lua/snippet_spec.lua
+++ b/test/functional/lua/snippet_spec.lua
@@ -79,6 +79,10 @@ describe('vim.snippet', function()
     -- Regression test: #29658
     api.nvim_buf_set_lines(curbuf, 0, -1, false, {})
     test_expand_success({ '${1:foo^bar}\n' }, { 'foo^bar', '' })
+
+    -- Regression test: #30950
+    api.nvim_buf_set_lines(curbuf, 0, -1, false, {})
+    test_expand_success({ 'a^ b$1', 'b$2', 'd' }, { 'a^ b', 'b', 'd' })
   end)
 
   it('replaces tabs with spaces when expandtab is set', function()
-- 
cgit