From 76dd7822989caf2c1eab2da21803da204b91363d Mon Sep 17 00:00:00 2001
From: Harshad Vedartham <harshad1@zoho.com>
Date: Thu, 19 May 2022 08:47:52 -0700
Subject: [PATCH 1/2] Added support for windows path pattern (only forward
 slash)

---
 lua/cmp_path/init.lua | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/lua/cmp_path/init.lua b/lua/cmp_path/init.lua
index 74f70ed..9f476d0 100644
--- a/lua/cmp_path/init.lua
+++ b/lua/cmp_path/init.lua
@@ -9,6 +9,9 @@ local constants = {
   max_lines = 20,
 }
 
+-- Heuristic to detect if running on windows and _not_ wsl
+local is_windows = vim.fn.has("windows") and not vim.fn.has("unix")
+
 
 ---@class cmp_path.Options
 ---@field public trailing_slash boolean
@@ -89,7 +92,7 @@ source._dirname = function(self, params, opts)
       return vim.fn.resolve(env_var_value .. '/' .. dirname)
     end
   end
-  if prefix:match('/$') then
+  if prefix:match('/$') or (is_windows and prefix:match('%a://')) then
     local accept = true
     -- Ignore URL components
     accept = accept and not prefix:match('%a/$')

From 1bc2d2eff6c501ed6a7a01ffd401bbf2a0b416f3 Mon Sep 17 00:00:00 2001
From: Harshad Srinivasan <harshad.srinivasan@lmi3d.net>
Date: Thu, 19 May 2022 11:57:37 -0700
Subject: [PATCH 2/2] Url vs drive letter detection

---
 lua/cmp_path/init.lua | 33 +++++++++++++++++++++++++++------
 1 file changed, 27 insertions(+), 6 deletions(-)

diff --git a/lua/cmp_path/init.lua b/lua/cmp_path/init.lua
index 9f476d0..52eff43 100644
--- a/lua/cmp_path/init.lua
+++ b/lua/cmp_path/init.lua
@@ -9,9 +9,7 @@ local constants = {
   max_lines = 20,
 }
 
--- Heuristic to detect if running on windows and _not_ wsl
-local is_windows = vim.fn.has("windows") and not vim.fn.has("unix")
-
+local is_windows = (vim.fn.has("windows") == 1) and (vim.fn.has("unix") == 0)
 
 ---@class cmp_path.Options
 ---@field public trailing_slash boolean
@@ -63,6 +61,20 @@ source.complete = function(self, params, callback)
   end)
 end
 
+
+local function is_url(prefix)
+
+    scheme = prefix:match('%a+://$')
+
+    -- Handle special case of drive letters on windows
+    if (is_windows and scheme and string.len(scheme) == 4) then
+        return false
+    end
+
+    return scheme or prefix:match('%a+:/$')
+
+end
+
 source._dirname = function(self, params, opts)
   local s = PATH_REGEX:match_str(params.context.cursor_before_line)
   if not s then
@@ -92,12 +104,21 @@ source._dirname = function(self, params, opts)
       return vim.fn.resolve(env_var_value .. '/' .. dirname)
     end
   end
-  if prefix:match('/$') or (is_windows and prefix:match('%a://')) then
+
+  if is_windows then
+      start = prefix:match('%a://$')
+  end
+
+  if not start then
+      start = prefix:match('/$')
+  end
+
+  if start then
     local accept = true
     -- Ignore URL components
     accept = accept and not prefix:match('%a/$')
     -- Ignore URL scheme
-    accept = accept and not prefix:match('%a+:/$') and not prefix:match('%a+://$')
+    accept = accept and not is_url(prefix)
     -- Ignore HTML closing tags
     accept = accept and not prefix:match('</$')
     -- Ignore math calculation
@@ -105,7 +126,7 @@ source._dirname = function(self, params, opts)
     -- Ignore / comment
     accept = accept and (not prefix:match('^[%s/]*$') or not self:_is_slash_comment())
     if accept then
-      return vim.fn.resolve('/' .. dirname)
+      return vim.fn.resolve(start .. dirname)
     end
   end
   return nil