cleanup!: drop support for nvim 0.8

.github/workflows/tests.yml

@@ -50,7 +50,6 @@ jobs:
     strategy:
       matrix:
         include:
-          - nvim_tag: v0.8.3
           - nvim_tag: v0.9.4
           - nvim_tag: v0.10.0
 

README.md

@@ -27,7 +27,7 @@ Lightweight yet powerful formatter plugin for Neovim
 
 ## Requirements
 
-- Neovim 0.8+
+- Neovim 0.9+ (for older versions, use a [nvim-0.x branch](https://github.com/stevearc/conform.nvim/branches))
 
 ## Features
 
@@ -216,7 +216,7 @@ You can view this list in vim with `:help conform-formatters`
 - [darker](https://github.com/akaihola/darker) - Run black only on changed lines.
 - [dart_format](https://dart.dev/tools/dart-format) - Replace the whitespace in your program with formatting that follows Dart guidelines.
 - [dcm_fix](https://dcm.dev/docs/cli/formatting/fix/) - Fixes issues produced by dcm analyze, dcm check-unused-code or dcm check-dependencies commands.
-- [dcm_format](https://dcm.dev/docs/cli/formatting/format/) - Formats *.dart files.
+- [dcm_format](https://dcm.dev/docs/cli/formatting/format/) - Formats .dart files.
 - [deno_fmt](https://deno.land/manual/tools/formatter) - Use [Deno](https://deno.land/) to format TypeScript, JavaScript/JSON and markdown.
 - [dfmt](https://github.com/dlang-community/dfmt) - Formatter for D source code.
 - [djlint](https://github.com/Riverside-Healthcare/djLint) - ✨ HTML Template Linter and Formatter. Django - Jinja - Nunjucks - Handlebars - GoLang.

doc/conform.txt

@@ -301,7 +301,7 @@ FORMATTERS                                                    *conform-formatter
               follows Dart guidelines.
 `dcm_fix` - Fixes issues produced by dcm analyze, dcm check-unused-code or dcm
           check-dependencies commands.
-`dcm_format` - Formats *.dart files.
+`dcm_format` - Formats .dart files.
 `deno_fmt` - Use [Deno](https://deno.land/) to format TypeScript,
            JavaScript/JSON and markdown.
 `dfmt` - Formatter for D source code.

lua/conform/formatters/dcm_format.lua

@@ -2,7 +2,7 @@
 return {
   meta = {
     url = "https://dcm.dev/docs/cli/formatting/format/",
-    description = "Formats *.dart files.",
+    description = "Formats .dart files.",
   },
   command = "dcm",
   args = { "format", "$FILENAME" },

lua/conform/formatters/injected.lua

@@ -136,12 +136,6 @@ return {
     -- (defaults to the value from formatters_by_ft)
     lang_to_formatters = {},
   },
-  condition = function(self, ctx)
-    local ok, parser = pcall(vim.treesitter.get_parser, ctx.buf)
-    -- Require Neovim 0.9 because the treesitter API has changed significantly
-    ---@diagnostic disable-next-line: invisible
-    return ok and parser._injection_query and vim.fn.has("nvim-0.9") == 1
-  end,
   format = function(self, ctx, lines, callback)
     local conform = require("conform")
     local errors = require("conform.errors")

lua/conform/init.lua

@@ -52,6 +52,10 @@ end
 
 ---@param opts? conform.setupOpts
 M.setup = function(opts)
+  if vim.fn.has("nvim-0.9") == 0 then
+    notify("conform.nvim requires Neovim 0.9+", vim.log.levels.ERROR)
+    return
+  end
   opts = opts or {}
 
   M.formatters = vim.tbl_extend("force", M.formatters, opts.formatters or {})

tests/injected_spec.lua

@@ -4,11 +4,6 @@ local injected = require("conform.formatters.injected")
 local runner = require("conform.runner")
 local test_util = require("tests.test_util")
 
--- injected formatter only supported on neovim 0.9+
-if vim.fn.has("nvim-0.9") == 0 then
-  return
-end
-
 ---@param dir string
 ---@return string[]
 local function list_test_files(dir)