Add a new import alignment mode 'file'.

This mode is like 'global', but doesn't add paddding for non-existent qualified
imports.

For example, with 'global'

import A
import B

is always transformed to

import           A
import           B

even if there are no qualified imports in the whole file.

1 files changed, 3 insertions, 0 deletions

diff --git a/data/stylish-haskell.yaml b/data/stylish-haskell.yaml
index c128830..080c2f9 100644
--- a/data/stylish-haskell.yaml
+++ b/data/stylish-haskell.yaml
@@ -22,6 +22,9 @@ steps:
       # - global: Align the import names and import list throughout the entire
       #   file.
       #
+      # - file: Like global, but don't add padding when there are no qualified
+      #   imports in the file.
+      #
       # - group: Only align the imports per group (a group is formed by adjacent
       #   import lines).
       #