dotfiles

commit 058c0b6aae2c9039a0ffa39f1fbc793dec616e29
parent 0d3e6f055ad9304dcfd306324c95d5fc7c537613
Author: Chris Bracken <chris@bracken.jp>
Date:   Mon, 25 May 2026 23:02:54 +0900

nvim: improve beancount format-on-save

* Change to BufWritePost to BufWritePre to format in-memory before the
  save.
* Scopes the autocommand to just the active buffer via `buffer = 0`.
* Read from stdin
* Revert formatting via silent undo if the fomatter fails

Diffstat:
M
.config/nvim/after/ftplugin/beancount.lua
 | 
25
+++++++++++++++----------

1 file changed, 15 insertions(+), 10 deletions(-)
diff --git a/.config/nvim/after/ftplugin/beancount.lua b/.config/nvim/after/ftplugin/beancount.lua
@@ -3,19 +3,24 @@ vim.opt_local.textwidth = 0
 vim.opt_local.wrap = false
 
 -- Format on save.
-vim.api.nvim_create_autocmd("BufWritePost", {
+vim.api.nvim_create_autocmd("BufWritePre", {
+  buffer = 0,
   desc = "Run bean-format on save",
-  callback = function(args)
-    local filepath = vim.api.nvim_buf_get_name(args.buf)
-    local filename = vim.fn.fnamemodify(filepath, ":t") -- just the tail name
-    local cmd
+  callback = function()
+    local filepath = vim.api.nvim_buf_get_name(0)
+    local view = vim.fn.winsaveview()
+    
     if filepath:match("[\\/]prices[\\/]") then
-      -- prices_* are formatted without a hardcoded currency column.
-      cmd = string.format("silent !bean-format %s -o %s", vim.fn.shellescape(filepath), vim.fn.shellescape(filepath))
+      vim.cmd("silent %!bean-format -")
     else
-      -- other beancount files are formatted with currency on 80th column.
-      cmd = string.format("silent !bean-format -c 80 %s -o %s", vim.fn.shellescape(filepath), vim.fn.shellescape(filepath))
+      vim.cmd("silent %!bean-format -c 80 -")
+    end
+    
+    if vim.v.shell_error ~= 0 then
+      vim.cmd("silent undo")
+      vim.notify("bean-format failed (syntax error)", vim.log.levels.WARN)
+    else
+      vim.fn.winrestview(view)
     end
-    vim.cmd(cmd)
   end,
 })