From fa2520242e19064d110dc2150081f8970f198aa9 Mon Sep 17 00:00:00 2001
From: Mildred Ki'Lya <mildred-pub.git@mildred.fr>
Date: Fri, 29 Jul 2022 23:52:12 +0200
Subject: [PATCH] Improve setting option values, and add user events

Add user events to allow the user to customize the indentation after the
detection, to fix some options that might be inherited from the initial
configuration. Allows to customize via the configuration which options
are set.

When tabs are detected, set shiftwidth=0 to ensure that the shifting
value is the same as the tabstop. Same with softtabstop=0 to disable it.
When spaces are detected, make optional setting of the tabstop and
softtabstop option.
---
 lua/guess-indent/config.lua |  2 ++
 lua/guess-indent/init.lua   | 15 +++++++++++++--
 2 files changed, 15 insertions(+), 2 deletions(-)

diff --git a/lua/guess-indent/config.lua b/lua/guess-indent/config.lua
index 017c0a1..483e1cd 100644
--- a/lua/guess-indent/config.lua
+++ b/lua/guess-indent/config.lua
@@ -2,6 +2,8 @@ local M = {}
 
 local default_config = {
   auto_cmd = true,
+  set_tabstop = true,
+  set_softtabstop = true,
   filetype_exclude = {
     "netrw",
     "tutor",
diff --git a/lua/guess-indent/init.lua b/lua/guess-indent/init.lua
index 31ef811..87f9c4b 100644
--- a/lua/guess-indent/init.lua
+++ b/lua/guess-indent/init.lua
@@ -66,15 +66,26 @@ local function set_indentation(indentation)
 
   if indentation == "tabs" then
     set_buffer_opt(0, "expandtab", false)
+    set_buffer_opt(0, "shiftwidth", 0)
+    if config.set_softtabstop then
+      set_buffer_opt(0, "softtabstop", 0)
+    end
     print("Did set indentation to tabs.")
+    vim.api.nvim_exec_autocmds("User", { pattern = "GuessIndentTabs" })
   elseif type(indentation) == "number" and indentation > 0 then
     set_buffer_opt(0, "expandtab", true)
-    set_buffer_opt(0, "tabstop", indentation)
-    set_buffer_opt(0, "softtabstop", indentation)
     set_buffer_opt(0, "shiftwidth", indentation)
+    if config.set_softtabstop then
+      set_buffer_opt(0, "softtabstop", indentation)
+    end
+    if config.set_tabstop then
+      set_buffer_opt(0, "tabstop", indentation)
+    end
     print("Did set indentation to", indentation, "spaces.")
+    vim.api.nvim_exec_autocmds("User", { pattern = "GuessIndentSpaces" })
   else
     print("Failed to detect indentation style.")
+    vim.api.nvim_exec_autocmds("User", { pattern = "GuessIndentNone" })
   end
 end