fix: only set option value if it changes

## Details

Issue: #186

In order to fix #177
the window option setting logic was updated to always modify window
options rather than on a state transition. The reason was to handle out
of band state transitions for a buffer that would cause the state of the
window options to be changed without the inner states knowledge. As a
result the window options were not being properly updated since
effectively no state transition occured.

While this does seem to have almost no performance penalty it does seem
to reset some kind of state in neovim that causes some kinds of motions
to be have differently, such as moving between ends of lines as reported
in the issue.

To fix this rather than always updating the option value, get the
current value and only set the new value if it is different.

In this way we properly handle out of band transitions since we're
relying on the actual current option value and not some internal state.
And since we don't unnecessarily change the value we don't mess with any
internal neovim state and allow motions to behave as they normally would.

Author: MeanderingProgrammer

lua/render-markdown/core/util.lua

@@ -52,21 +52,23 @@ end
 
 ---@param win integer
 ---@param name string
----@return number|string|boolean
+---@return render.md.option.Value
 function M.get_win(win, name)
     return vim.api.nvim_get_option_value(name, { scope = 'local', win = win })
 end
 
 ---@param win integer
 ---@param name string
----@param value number|string|boolean
+---@param value render.md.option.Value
 function M.set_win(win, name, value)
-    vim.api.nvim_set_option_value(name, value, { scope = 'local', win = win })
+    if value ~= M.get_win(win, name) then
+        vim.api.nvim_set_option_value(name, value, { scope = 'local', win = win })
+    end
 end
 
 ---@param buf integer
 ---@param name string
----@return number|string|boolean
+---@return render.md.option.Value
 function M.get_buf(buf, name)
     return vim.api.nvim_get_option_value(name, { buf = buf })
 end

lua/render-markdown/health.lua

@@ -4,7 +4,7 @@ local state = require('render-markdown.state')
 local M = {}
 
 ---@private
-M.version = '7.2.1'
+M.version = '7.2.2'
 
 function M.check()
     M.start('version')

lua/render-markdown/init.lua

@@ -22,9 +22,11 @@ local M = {}
 ---@field public enabled? boolean
 ---@field public query? string
 
+---@alias render.md.option.Value number|string|boolean
+
 ---@class (exact) render.md.UserWindowOption
----@field public default? number|string|boolean
----@field public rendered? number|string|boolean
+---@field public default? render.md.option.Value
+---@field public rendered? render.md.option.Value
 
 ---@class (exact) render.md.UserIndent
 ---@field public enabled? boolean

lua/render-markdown/types.lua

@@ -12,8 +12,8 @@
 ---@field public query string
 
 ---@class (exact) render.md.WindowOption
----@field public default number|string|boolean
----@field public rendered number|string|boolean
+---@field public default render.md.option.Value
+---@field public rendered render.md.option.Value
 
 ---@class (exact) render.md.Indent
 ---@field public enabled boolean