[#68] Add fish-indent

CHANGELOG.md

@@ -18,6 +18,10 @@ The format is based on [Keep a Changelog].
   [#65]. The log buffer is not hidden by default, and this can be
   changed via the new user option `apheleia-hide-log-buffer` ([#69]).
 
+## Formatters
+* [fish\_indent](https://fishshell.com/docs/current/cmds/fish_indent.html)
+  for [Fish](https://fishshell.com/) ([#68]).
+
 ## Bugs fixed
 * Allow running the same formatter in multiple buffers in parallel
   ([#64], [#65]). Previously, when saving a number of files at the
@@ -35,6 +39,7 @@ The format is based on [Keep a Changelog].
 [#62]: https://github.com/raxod502/apheleia/issues/62
 [#64]: https://github.com/raxod502/apheleia/issues/64
 [#65]: https://github.com/raxod502/apheleia/pull/65
+[#68]: https://github.com/raxod502/apheleia/issues/68
 [#69]: https://github.com/raxod502/apheleia/issues/69
 
 ## 1.2 (released 2021-12-27)

apheleia.el

@@ -633,6 +633,7 @@ function: %s" command)))
   '((black . ("black" "-"))
     (brittany . ("brittany"))
     (clang-format . ("clang-format"))
+    (fish-indent . ("fish_indent"))
     (gofmt . ("gofmt"))
     (google-java-format . ("google-java-format" "-"))
     (isort . ("isort" "--stdout" "-"))
@@ -694,6 +695,7 @@ such a directory exists anywhere above the current
     (c++-mode . clang-format)
     (css-mode . prettier)
     (elixir-mode . mix-format)
+    (fish-mode . fish-indent)
     (go-mode . gofmt)
     (haskell-mode . brittany)
     (html-mode . prettier)