home: vim: configure 'gitsigns'

And remove some unused mappings, or adapt them to 'gitsigns'.

home/vim/after/plugin/mappings/git.vim

@@ -9,10 +9,8 @@ local keys = {
     },
     ["<leader>g"] = {
         name = "Git",
-        d = { "<cmd>Gdiffsplit<CR>", "Current buffer diff" },
         l = { "<cmd>:sp<CR><C-w>T:Gllog --follow -- %:p<CR>", "Current buffer log" },
         m = { "<Plug>(git-messenger)", "Current line blame" },
-        s = { "<cmd>Gstatus<CR>", "Status" },
     },
 }
 

home/vim/plugin/settings/gitsigns.vim

@@ -0,0 +1,54 @@
+lua << EOF
+local gitsigns = require('gitsigns')
+
+gitsigns.setup({
+    -- I dislike the full-green sign column when this happens
+    attach_to_untracked = false,
+
+    current_line_blame_opts = {
+        -- Show the blame quickly
+        delay = 100,
+    },
+
+    on_attach = function(bufnr)
+        local wk = require("which-key")
+
+        local keys = {
+            -- Navigation
+            ["[c"] = { "&diff ? '[c' : '<cmd>Gitsigns prev_hunk<CR>'", "Previous hunk/diff", expr = true },
+            ["]c"] = { "&diff ? ']c' : '<cmd>Gitsigns next_hunk<CR>'", "Next hunk/diff", expr = true },
+
+
+            -- Commands
+            ["<leader>g"] = {
+                name = "Git",
+                -- Actions
+                b = { gitsigns.toggle_current_line_blame, "Toggle blame virtual text" },
+                d = { gitsigns.diffthis, "Diff buffer" },
+                D = { function() gitsigns.diffthis("~") end, "Diff buffer against last commit" },
+                h = { gitsigns.toggle_deleted, "Show deleted hunks" },
+                p = { gitsigns.preview_hunk, "Preview hunk" },
+                r = { gitsigns.reset_hunk, "Revert hunk" },
+                R = { gitsigns.reset_buffer, "Revert buffer" },
+                s = { gitsigns.stage_hunk, "Stage hunk" },
+                S = { gitsigns.stage_buffer, "Stage buffer" },
+                u = { gitsigns.undo_stage_hunk, "Undo stage hunk" },
+                ["["] = { gitsigns.prev_hunk, "Previous hunk" },
+                ["]"] = { gitsigns.next_hunk, "Next hunk" },
+            },
+        }
+
+        local objects = {
+            ["ih"] = { gitsigns.select_hunk, "Git hunk" },
+        }
+
+        local visual = {
+            ["ih"] = { gitsigns.select_hunk, "Git hunk" },
+        }
+
+        wk.register(keys, { buffer = bufnr })
+        wk.register(objects, { mode = "o" })
+        wk.register(visual, { mode = "x" })
+    end,
+})
+EOF