feat: new textobj lastChange

chrisgrieser · Dec 28, 2023 · 1e41dbf · 1e41dbf
1 parent e04943a
commit 1e41dbf
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Showing 4 changed files with 23 additions and 2 deletions.
diff --git a/README.md b/README.md
@@ -53,6 +53,7 @@ Bundle of more than 30 new textobjects for Neovim.
 | chainMember            | field with the full call, like `.encode(param)`                                           | outer includes the leading `.` (or `:`)                                                   | small           |        `im`, `am`        | all                             |
 | visibleInWindow        | all lines visible in the current window                                                   | \-                                                                                        | \-              |           `gw`           | all                             |
 | restOfWindow           | from the cursorline to the last line in the window                                        | \-                                                                                        | \-              |           `gW`           | all                             |
+| lastChange             | Last Change, yank, or paste.[^2] (Does not work with changes that are deletions.)         | \-                                                                                        | \-              |           `g;`           | all                             |
 | mdlink                 | markdown link like `[title](url)`                                                         | inner is only the link title (between the `[]`)                                           | small           |        `il`, `al`        | markdown, toml                  |
 | mdFencedCodeBlock      | markdown fenced code (enclosed by three backticks)                                        | outer includes the enclosing backticks                                                    | big             |        `iC`, `aC`        | markdown                        |
 | cssSelector            | class in CSS like `.my-class`                                                             | outer includes trailing comma and space                                                   | small           |        `ic`, `ac`        | css, scss                       |
@@ -228,6 +229,8 @@ keymap({ "o", "x" }, "YOUR_MAPPING", "<cmd>lua require('various-textobjs').entir
 
 keymap({ "o", "x" }, "YOUR_MAPPING", "<cmd>lua require('various-textobjs').nearEoL()<CR>")
 
+keymap({ "o", "x" }, "YOUR_MAPPING", "<cmd>lua require('various-textobjs').lastChange()<CR>")
+
 keymap(
 	{ "o", "x" },
 	"YOUR_MAPPING",
@@ -567,3 +570,8 @@ __Profiles__
 /></a>
 
 [^1]: This respects vim's [quoteescape option](https://neovim.io/doc/user/options.html#'quoteescape').
+
+[^2]: The `lastChange` textobject does not work well with plugins that
+	manipulate paste operations such as
+	[yanky.nvim](https://github.com/gbprod/yanky.nvim) or plugins that auto-save
+	the buffer.
diff --git a/lua/various-textobjs/charwise-textobjs.lua b/lua/various-textobjs/charwise-textobjs.lua
@@ -325,6 +325,18 @@ function M.chainMember(scope, lookForwL)
 	selectTextobj(pattern, scope, lookForwL)
 end
 
+function M.lastChange()
+	local changeStartPos = vim.api.nvim_buf_get_mark(0, "[")
+	local changeEndPos = vim.api.nvim_buf_get_mark(0, "]")
+
+	if changeStartPos[1] == changeEndPos[1] and changeStartPos[2] == changeEndPos[2] then
+		u.notify("Last Change was a deletion operation, aborting.", "warn")
+		return
+	end
+
+	setSelection(changeStartPos, changeEndPos)
+end
+
 --------------------------------------------------------------------------------
 -- FILETYPE SPECIFIC TEXTOBJS
 

diff --git a/lua/various-textobjs/default-keymaps.lua b/lua/various-textobjs/default-keymaps.lua
@@ -26,7 +26,8 @@ local oneMaps = {
 	column = "|",
 	entireBuffer = "gG", -- G + gg
 	url = "L", -- gu, gU, and U would conflict with gugu, gUgU, and gUU. u would conflict with gcu (undo comment)
-	multiCommentedLines = "gc" -- consistent with usual mapping for commenting lines
+	multiCommentedLines = "gc", -- consistent with usual mapping for commenting lines
+	lastChange = "g;", -- consistent with g; movement
 }
 local ftMaps = {
 	{

diff --git a/lua/various-textobjs/init.lua b/lua/various-textobjs/init.lua
@@ -15,7 +15,6 @@ local function argConvert(arg)
 	if arg == false then return "outer" end
 	if arg == true then return "inner" end
 	if arg == "outer" or arg == "inner" then return arg end
-
 	u.notify(
 		"Invalid argument for textobject, only 'outer' and 'inner' accepted. Falling back to outer textobject.",
 		"warn"
@@ -98,6 +97,7 @@ function M.toNextClosingBracket() charwise.toNextClosingBracket(config.lookForwa
 function M.toNextQuotationMark() charwise.toNextQuotationMark(config.lookForwardSmall) end
 function M.url() charwise.url(config.lookForwardBig) end
 function M.diagnostic() charwise.diagnostic(config.lookForwardBig) end
+function M.lastChange() charwise.lastChange() end
 
 ---@param scope "inner"|"outer"
 function M.anyQuote(scope) charwise.anyQuote(argConvert(scope), config.lookForwardSmall) end