debug completion

lua/gemini/completion.lua

@@ -50,37 +50,52 @@ end
 local function show_suggestion(suggestion, start_col)
     clear_suggestion()
     
-    -- Only use first line of suggestion
-    suggestion = suggestion:match("^[^\n]*")
-    if suggestion == "" then return end
+    -- Split suggestion into lines
+    local suggestion_lines = vim.split(suggestion, "\n")
+    if #suggestion_lines == 0 then return end
     
+    -- Get current line info
     local line = vim.api.nvim_win_get_cursor(0)[1] - 1
     local line_text = vim.api.nvim_buf_get_lines(0, line, line + 1, true)[1]
     
     -- Get text before cursor on current line
     local prefix = string.sub(line_text, 1, start_col)
     
-    -- Only show suggestion if it continues the current text
-    if not suggestion:find("^" .. vim.pesc(prefix), 1, true) then
-        suggestion = prefix .. suggestion
+    -- Process first line of suggestion
+    local first_line = suggestion_lines[1]
+    if not first_line:find("^" .. vim.pesc(prefix), 1, true) then
+        first_line = prefix .. first_line
     end
+    first_line = first_line:sub(#prefix + 1)
     
-    -- Remove the prefix from the suggestion to avoid duplication
-    suggestion = suggestion:sub(#prefix + 1)
-    
-    if suggestion == "" then return end
+    if first_line == "" and #suggestion_lines == 1 then return end
     
     current_suggestion.text = suggestion
     current_suggestion.start_col = start_col
     
-    -- Make the text virtual (doesn't affect actual buffer content)
+    -- Show first line as virtual text
+    if first_line ~= "" then
         vim.api.nvim_buf_set_extmark(0, current_suggestion.namespace_id, line, start_col, {
-        virt_text = {{suggestion, 'GeminiSuggestion'}},
+            virt_text = {{first_line, 'GeminiSuggestion'}},
             virt_text_pos = 'inline',
             virt_text_hide = true,
         })
+    end
     
-    debug_print("Showing suggestion: %s", suggestion)
+    -- Show remaining lines as virtual lines
+    if #suggestion_lines > 1 then
+        local virt_lines = {}
+        for i = 2, #suggestion_lines do
+            table.insert(virt_lines, {{suggestion_lines[i], 'GeminiSuggestion'}})
+        end
+        
+        vim.api.nvim_buf_set_extmark(0, current_suggestion.namespace_id, line, start_col, {
+            virt_lines = virt_lines,
+            virt_lines_above = false,
+        })
+    end
+    
+    debug_print("Showing suggestion (%d lines)", #suggestion_lines)
 end
 
 function M.accept_suggestion()
@@ -96,17 +111,35 @@ function M.accept_suggestion()
         return false
     end
     
+    -- Split suggestion into lines
+    local suggestion_lines = vim.split(current_suggestion.text, "\n")
+    if #suggestion_lines == 0 then return false end
+    
+    -- Insert first line at cursor position
     vim.api.nvim_buf_set_text(
         0,
         line,
         col,
         line,
         col,
-        {current_suggestion.text}
+        {suggestion_lines[1]}
     )
     
+    -- Insert remaining lines below
+    if #suggestion_lines > 1 then
+        vim.api.nvim_buf_set_lines(
+            0,
+            line + 1,
+            line + 1,
+            false,
+            vim.list_slice(suggestion_lines, 2)
+        )
+    end
+    
     -- Move cursor to end of inserted text
-    vim.api.nvim_win_set_cursor(0, {line + 1, col + #current_suggestion.text})
+    local final_line = line + #suggestion_lines - 1
+    local final_col = #suggestion_lines[#suggestion_lines]
+    vim.api.nvim_win_set_cursor(0, {final_line + 1, final_col})
     
     clear_suggestion()
     return true
@@ -164,27 +197,31 @@ function M.trigger_completion()
         
         debug_print("Getting completion for: %s", prefix)
         
-        -- Construct context from buffer
+        -- Construct context with line numbers and cursor position
         local context = {}
+        local cursor_line = line
+        local cursor_col = col
         
         -- Add up to 10 previous lines for context
         local start_line = math.max(1, line - 10)
         for i = start_line, line - 1 do
             if lines[i] and #lines[i] > 0 then
-                table.insert(context, lines[i])
+                table.insert(context, string.format("L%d: %s", i, lines[i]))
             end
         end
         
-        -- Add current line
+        -- Add current line with cursor position marker (^)
         if current_line and #current_line > 0 then
-            table.insert(context, current_line)
+            local cursor_marker = string.rep(" ", cursor_col) .. "^"
+            table.insert(context, string.format("L%d (current): %s", cursor_line, current_line))
+            table.insert(context, cursor_marker)
         end
         
         -- Add up to 10 lines after current line
         local end_line = math.min(#lines, line + 10)
         for i = line + 1, end_line do
             if lines[i] and #lines[i] > 0 then
-                table.insert(context, lines[i])
+                table.insert(context, string.format("L%d: %s", i, lines[i]))
             end
         end
         
@@ -195,11 +232,19 @@ function M.trigger_completion()
             return
         end
         
+        -- Get file type for better context
+        local file_type = vim.bo.filetype
+        
         -- Construct prompt for Gemini
-        local prompt = string.format(
-            "Complete this code. Consider the context (10 lines before and after). Return ONLY the completion that would naturally follow at the cursor position, no explanation:\n%s",
-            full_context
-        )
+        local prompt = string.format([[
+I'm editing a %s file. Here's the context around line %d where my cursor (^) is:
+
+%s
+
+Complete the code at the cursor position. Consider the syntax and style of the surrounding code.
+Return ONLY the completion that would naturally follow, no explanation.
+The completion can be multiple lines if appropriate for the context.
+]], file_type, cursor_line, full_context)
         
         -- Validate prompt before sending
         if #prompt == 0 then