yaml formatting

foo.yaml

@@ -0,0 +1,18 @@
+doe: a deer, a female deer
+ray: a drop of golden sun
+pi: 3.14159
+xmas: true
+french-hens: 3
+calling-birds:
+- huey
+- dewey
+- louie
+- fred
+xmas-fifth-day:
+  calling-birds: four
+  french-hens: 3
+  golden-rings: 5
+  partridges:
+    count: 1
+    location: a pear tree
+  turtle-doves: two

format.sh

@@ -3,12 +3,14 @@
 format () {
   pat="$1"
   shift
-  if git ls-files --error-unmatch "$pat"; then
-    git ls-files "$pat" | xargs "$@"
+  if git ls-files --error-unmatch "$pat" 2>/dev/null; then
+    git ls-files "$pat" | xargs -- "$@" --
   fi
 }
 
 format '*.hs' ormolu
 format '*.sql' sqlformat -reindent -s -keywords upper -identifiers lower
-format '*.py' python -m isort
-format '*.py' python -m black -- -S -q
+format '*.py' python3 -m isort --
+format '*.py' python3 -m black -- -S -q
+format '*.yaml' yamlfmt -w
+format '*.yml' yamlfmt -w

install.sh

@@ -1,5 +1,3 @@
 #!/bin/bash
 
-pip install --upgrade black isort
-
-
+pip install --upgrade black isort yamlfmt