feat(neovim): extend gitsigns config

home/editors/neovim/gitsigns.lua

@@ -1 +1,34 @@
-require('gitsigns').setup()
+-- TODO vim.keymap.set not yet supported on stable neovim
+-- see gitsigns repo for sample when migrating to vim.keymap.set
+
+require("gitsigns").setup {
+  on_attach = function(bufnr)
+    local function map(mode, lhs, rhs, opts)
+        opts = vim.tbl_extend('force', {noremap = true, silent = true}, opts or {})
+        vim.api.nvim_buf_set_keymap(bufnr, mode, lhs, rhs, opts)
+    end
+
+    -- Navigation
+    map("n", "]c", "&diff ? ']c' : '<cmd>Gitsigns next_hunk<CR>'", { expr = true })
+    map("n", "[c", "&diff ? '[c' : '<cmd>Gitsigns prev_hunk<CR>'", { expr = true })
+
+    -- Actions
+    map("n", "<leader>hs", ":Gitsigns stage_hunk<CR>")
+    map("v", "<leader>hs", ":Gitsigns stage_hunk<CR>")
+    map("n", "<leader>hr", ":Gitsigns reset_hunk<CR>")
+    map("v", "<leader>hr", ":Gitsigns reset_hunk<CR>")
+    map("n", "<leader>hS", "<cmd>Gitsigns stage_buffer<CR>")
+    map("n", "<leader>hu", "<cmd>Gitsigns undo_stage_hunk<CR>")
+    map("n", "<leader>hR", "<cmd>Gitsigns reset_buffer<CR>")
+    map("n", "<leader>hp", "<cmd>Gitsigns preview_hunk<CR>")
+    map("n", "<leader>hb", "<cmd>lua require'gitsigns'.blame_line{full=true}<CR>")
+    map("n", "<leader>tb", "<cmd>Gitsigns toggle_current_line_blame<CR>")
+    map("n", "<leader>hd", "<cmd>Gitsigns diffthis<CR>")
+    map("n", "<leader>hD", "<cmd>lua require'gitsigns'.diffthis('~')<CR>")
+    map("n", "<leader>td", "<cmd>Gitsigns toggle_deleted<CR>")
+
+    -- Text object
+    map("o", "ih", ":<C-U>Gitsigns select_hunk<CR>")
+    map("x", "ih", ":<C-U>Gitsigns select_hunk<CR>")
+  end
+}