fix(git): preserve dispatch and content after jumping back

lua/git/log_view.lua

@@ -47,14 +47,13 @@ local function fetch(worktree, max_count)
     return util.exec(cmd, { cwd = worktree })
 end
 
+---@type table<string, integer> -- worktree -> max_count
+local max_counts = {}
+
 ---@param buf integer
 ---@param r ow.Git.Repo
 local function populate(buf, r)
-    local state = r:state(buf)
+    local stdout = fetch(r.worktree, max_counts[r.worktree])
-    if not state then
-        return
-    end
-    local stdout = fetch(r.worktree, state.log_max_count)
     if not stdout then
         return
     end
@@ -123,10 +122,8 @@ function M.open(opts)
         return
     end
 
+    max_counts[r.worktree] = opts.max_count
     local buf = vim.fn.bufadd(M.URI_PREFIX .. r.worktree)
-    repo.bind(buf, r)
-    local state = r:state(buf) --[[@as -nil]]
-    state.log_max_count = opts.max_count
     local was_loaded = vim.api.nvim_buf_is_loaded(buf)
 
     local win = vim.fn.bufwinid(buf)

lua/git/object.lua

@@ -375,13 +375,12 @@ end
 
 ---@return boolean dispatched
 function M.open_under_cursor()
-    local s = repo.state()
+    local r = repo.resolve()
-    if not s then
+    if not r then
         return false
     end
 
     local line = vim.api.nvim_get_current_line()
-    local r = s.repo
 
     local sha = line:match("^commit (%x+)$")
         or line:match("^parent (%x+)$")

lua/git/repo.lua

@@ -19,7 +19,6 @@ end
 ---@field immutable boolean?
 ---@field index_writer boolean?
 ---@field index_mode string?
----@field log_max_count integer?
 
 ---@alias ow.Git.Repo.Event "refresh"
 

test/git/cmd_test.lua

@@ -316,6 +316,77 @@ t.test(":G show <CR> on + line opens the blob URI", function()
     t.eq(vim.api.nvim_buf_get_name(0), "git://" .. blob)
 end)
 
+t.test("<leader>gl log buffer refills after jumping back", function()
+    local dir = make_repo({ a = "v1\n" })
+    t.write(dir, "a", "v2\n")
+    helpers.git(dir, "add", "a")
+    helpers.git(dir, "commit", "-q", "-m", "second")
+
+    require("git.log_view").open({ max_count = 1000 })
+    wait_buf_populated("^gitlog://")
+    local log_buf = vim.api.nvim_get_current_buf()
+    local log_win = vim.api.nvim_get_current_win()
+    t.truthy(
+        vim.api.nvim_buf_get_name(log_buf):match("^gitlog://")
+    )
+    local initial_lines =
+        #vim.api.nvim_buf_get_lines(log_buf, 0, -1, false)
+    t.truthy(initial_lines >= 2)
+
+    -- Step into a commit, then <C-o> back to the log.
+    vim.api.nvim_win_set_cursor(log_win, { 1, 0 })
+    local cr =
+        vim.api.nvim_replace_termcodes("<CR>", true, false, true)
+    vim.api.nvim_feedkeys(cr, "x", false)
+    t.truthy(vim.api.nvim_buf_get_name(0):match("^git://"))
+
+    local co =
+        vim.api.nvim_replace_termcodes("<C-o>", true, false, true)
+    vim.api.nvim_feedkeys(co, "x", false)
+    t.eq(vim.api.nvim_get_current_buf(), log_buf)
+    t.eq(
+        #vim.api.nvim_buf_get_lines(log_buf, 0, -1, false),
+        initial_lines,
+        "log buffer must repopulate on jump-back"
+    )
+end)
+
+t.test("<CR> still dispatches after navigating away and back", function()
+    local dir = make_repo({ a = "v1\n" })
+    t.write(dir, "a", "v2\n")
+    helpers.git(dir, "add", "a")
+    helpers.git(dir, "commit", "-q", "-m", "second")
+
+    -- Open the HEAD commit object buffer. Its cat-file output includes a
+    -- "parent <sha>" line we can navigate from.
+    local r = assert(require("git.repo").resolve(dir))
+    require("git.object").open(r, "HEAD", { split = false })
+    local first_obj_buf = vim.api.nvim_get_current_buf()
+    local first_obj_win = vim.api.nvim_get_current_win()
+    t.truthy(vim.api.nvim_buf_get_name(first_obj_buf):match("^git://"))
+
+    -- Step into the parent commit. This hides first_obj_buf which has
+    -- bufhidden=delete, so it gets unloaded.
+    local parent_lnum = assert(find_line(first_obj_buf, "parent "))
+    vim.api.nvim_win_set_cursor(first_obj_win, { parent_lnum, 0 })
+    t.truthy(require("git.object").open_under_cursor())
+    local parent_buf = vim.api.nvim_get_current_buf()
+    t.truthy(parent_buf ~= first_obj_buf)
+
+    -- <C-o> back to first_obj_buf. With bufhidden=delete, vim re-reads the
+    -- URI, which previously raced with BufDelete-driven unbind and left
+    -- state cleared, so open_under_cursor returned false.
+    local co = vim.api.nvim_replace_termcodes("<C-o>", true, false, true)
+    vim.api.nvim_feedkeys(co, "x", false)
+    t.eq(vim.api.nvim_get_current_buf(), first_obj_buf)
+    local tree_lnum = assert(find_line(first_obj_buf, "tree "))
+    vim.api.nvim_win_set_cursor(first_obj_win, { tree_lnum, 0 })
+    t.truthy(
+        require("git.object").open_under_cursor(),
+        "<CR> must work after returning to the buffer"
+    )
+end)
+
 t.test(":G diff <CR> on + line falls back to worktree file", function()
     local dir = make_repo({ a = "v1\n" })
     t.write(dir, "a", "v2\n")