doc: document the "*" filetype option

1 files changed, 4 insertions, 0 deletions

diff --git a/doc/conform.txt b/doc/conform.txt
index 66754a6..fada19a 100644
--- a/doc/conform.txt
+++ b/doc/conform.txt
@@ -20,6 +20,10 @@ OPTIONS                                                          *conform-option
         python = { "isort", "black" },
         -- Use a sub-list to run only the first available formatter
         javascript = { { "prettierd", "prettier" } },
+        -- Use the "*" filetype to run formatters on all files.
+        -- Note that if you use this, you may want to set lsp_fallback = "always"
+        -- (see :help conform.format)
+        ["*"] = { "trim_whitespace" },
       },
       -- If this is set, Conform will run the formatter on save.
       -- It will pass the table to conform.format().