2 files changed, 42 insertions(+), 0 deletions(-)

A lua/srht-patches/init.lua
A plugin/srht-patches.vim

@@ 1,41 @@
+local Patch = {}
+
+-- Check if email is a patch; email is a patch is the subject line contains PATCH
+local function check_patch()
+  local result = vim.fn.search("^Subject:.*PATCH.*", "nw")
+  if result == 0 then
+    return false
+  end
+  return true
+end
+
+local function set_header(status)
+  if not check_patch() then
+    return
+  end
+
+  -- Move cursor to file start and save position
+  local cursor_position = vim.api.nvim_win_get_cursor(0)
+  vim.api.nvim_win_set_cursor(0, { 1, 0 })
+
+  -- Search for first empty line and insert header
+  local line = vim.fn.search("^$")
+  vim.api.nvim_buf_set_lines(0, line - 1, line - 1, true, {
+    string.format("X-Sourcehut-Patchset-Update: %s", status),
+  })
+
+  -- If user was below inserted line we have to move cursor 1 line more
+  local offset = 0
+  if cursor_position[1] >= line then
+    offset = 1
+  end
+
+  -- Set cursor to old position
+  vim.api.nvim_win_set_cursor(0, { cursor_position[1] + offset, cursor_position[2] })
+end
+
+function Patch.applied()
+  set_header("APPLIED")
+end
+
+return Patch

@@ 1,1 @@
+command! PatchApplied lua require'srht-patches'.applied()