Breaking changes, and add g:ai_indicator_style.

Breaking changes:
- Rename g:ai_sign_text to g:ai_indicator_text.
- Rename AISign hlgroup to AIIndicator.

doc/ai.txt

@@ -118,16 +118,26 @@ CUSTOMIZING
 
         Example: `let g:ai_context_after=50`
 
-*g:ai_sign_text* (default: "🤖")
+*g:ai_indicator_style* (default: "sign")
 
-        The gutter sign text used to indicate a request in-progress. If your
-        terminal can't display emojis, you'll probably want to set this.
+        Controls where the progress indicator is displayed. Allowed values:
 
-        Example: `let g:ai_sign_text="A"`
+            - `sign`: Display indicator in the sign column.
+            - `virtual_text`: Display indicator as virtual text.
+            - `none`: Don't display any indicator.
 
-*AISign* is the |:highlight| group to color the gutter sign text.
+        Example: `let g:ai_indicator_style="virtual_text"`
 
-        Example: `:highlight AISign ctermbg=red`
+*g:ai_indicator_text* (default: "🤖")
+
+        The text used to indicate a request in-progress. If your terminal can't
+        display emojis, you'll probably want to set this.
+
+        Example: `let g:ai_indicator_text="A"`
+
+*AIIndicator* is the |:highlight| group to color the indicator text.
+
+        Example: `:highlight AIIndicator ctermbg=red`
 
 *AIHighlight* is the |:highlight| group to color the text being processed.
 

lua/_ai/commands.lua

@@ -50,14 +50,24 @@ function M.ai (args)
     local end_line_length = vim.api.nvim_buf_get_lines(buffer, end_row, end_row+1, true)[1]:len()
     end_col = math.min(end_col, end_line_length)
 
-    local mark_id = vim.api.nvim_buf_set_extmark(buffer, ns_id, start_row, start_col, {
+    local indicator_style = get_var("ai_indicator_style", "sign")
+    local indicator_text = get_var("ai_indicator_text", "🤖")
+    local extmark_opts = {
         end_row = end_row,
         end_col = end_col,
         hl_group = "AIHighlight",
-        sign_text = get_var("ai_sign_text", "🤖"),
-        sign_hl_group = "AISign",
-        -- virt_text = {{"🤖", nil}},
-    })
+    }
+    if indicator_style == "sign" then
+        extmark_opts.sign_text = indicator_text
+        extmark_opts.sign_hl_group = "AIIndicator"
+    elseif indicator_style == "virtual_text" then
+        extmark_opts.virt_text = {{ indicator_text, "AIIndicator" }}
+    elseif indicator_style ~= "none" then
+        vim.api.nvim_err_writeln("ai.vim: Unsupported value for g:ai_indicator_style")
+        return
+    end
+
+    local mark_id = vim.api.nvim_buf_set_extmark(buffer, ns_id, start_row, start_col, extmark_opts)
 
     local completions_model = get_var("ai_completions_model", "text-davinci-003")
     local edits_model = get_var("ai_edits_model", "text-davinci-edit-001")