feat(bash): Add bash format checks

.editorconfig

@@ -0,0 +1,14 @@
+[*.sh]
+# like -i=4
+indent_style = space
+indent_size = 4
+
+# --language-variant
+shell_variant      = bash
+binary_next_line   = true
+# --case-indent
+switch_case_indent = true
+space_redirects    = true
+keep_padding       = false
+# --func-next-line
+function_next_line = false

earthly/bash/Earthfile

@@ -7,7 +7,8 @@ builder:
 
     RUN apk add --no-cache \
         bash \
-        shellcheck
+        shellcheck \
+        shfmt
 
     WORKDIR /work
     COPY check-all.sh shellcheck-dir.sh duplicated-scripts.sh .

earthly/bash/check-all.sh

@@ -2,12 +2,15 @@
 # Run `shellcheck` on all files in a directory, recursively.
 # $1 = The directory to check.
 
-basedir=$(dirname "$0")
+if [[ ${BASH_SOURCE[0]} = */* ]]; then
+    basedir=${BASH_SOURCE%/*}
+else
+    basedir=.
+fi
+
 # Get our includes relative to this file's location.
 source "${basedir}/include/colors.sh"
 
-echo BASEDIR = "${basedir}"
-
 rc=0
 
 "${basedir}"/duplicated-scripts.sh "$1"
@@ -16,12 +19,22 @@ rc_dup=$?
 "${basedir}"/shellcheck-dir.sh "$1"
 rc_lint=$?
 
+FORCECOLOR=1 shfmt -d .
+rc_shfmt=$?
+
 # Return an error if any of this fails.
 status "${rc}" "Duplicated Bash Scripts" \
     [ "${rc_dup}" == 0 ]
 rc=$?
 status "${rc}" "Lint Errors in Bash Scripts" \
     [ "${rc_lint}" == 0 ]
 rc=$?
+status "${rc}" "ShellFmt Errors in Bash Scripts" \
+    [ "${rc_shfmt}" == 0 ]
+rc=$?
+
+if [[ ${rc_shfmt} -ne 0 ]]; then
+    echo "Shell files can be autoformated with: 'shfmt -w .' from the root of the repo."
+fi
 
 exit "${rc}"