feat: range formatting

Should work the same as vim.lsp.buf.format(). Additionally, range
formatting is supported for *any* formatter. If the formatter doesn't
have native support for ranges, conform will do its best to only apply the
diffs that affect that range.

1 files changed, 4 insertions, 1 deletions

diff --git a/lua/conform/formatters/yapf.lua b/lua/conform/formatters/yapf.lua
index 5d7e866..fc3cfeb 100644
--- a/lua/conform/formatters/yapf.lua
+++ b/lua/conform/formatters/yapf.lua
@@ -1,4 +1,4 @@
----@type conform.FormatterConfig
+---@type conform.FileFormatterConfig
 return {
   meta = {
     url = "https://github.com/google/yapf",
@@ -6,4 +6,7 @@ return {
   },
   command = "yapf",
   args = { "--quiet" },
+  range_args = function(ctx)
+    return { "--quiet", "--lines", string.format("%d-%d", ctx.range.start[1], ctx.range["end"][1]) }
+  end,
 }