Work around non-failure "failure" modes

would-reformat.sh

@@ -31,16 +31,18 @@ if [[ $file_type = "javascript" ||
     $file_type == "css" ||
     $file_type == "scss" ||
     $file_type = "sh" ]]; then
-    out=$("$(wfroot "$DIR")"/./prettier.sh "$file" 2>&1 > /dev/null)
+    set +e
     out=$("$WF_ROOT"/./prettier.sh "$file" 2>&1 >/dev/null)
     retval="$?"
+    set -e
     success_retval=0
     would_reformat_retval=1
     syntax_error_retval=2
 elif [[ $file_type == "python" ]]; then
-    out=$("$(wfroot "$DIR")"/./isort-and-black.sh "$file" 2>&1 > /dev/null)
+    set +e
     out=$("$WF_ROOT"/./isort-and-black.sh "$file" 2>&1 >/dev/null)
     retval="$?"
+    set -e
     success_retval=0
     would_reformat_retval=1
     syntax_error_retval=2
@@ -49,8 +51,10 @@ elif [[ $file_type == "golang" ]] ; then
     would_reformat_retval=1
     syntax_error_retval=2
 
+    set +e
     out=$(gofmt -l "$file")
     exitval="$?"
+    set -e
 
     if [[ "$exitval" = "$syntax_error_retval" ]] ; then
         retval="$exitval"
@@ -66,8 +70,11 @@ elif [[ $file_type == "dart" ]] ; then
     # probably others too :(
     syntax_error_retval=65
 
+    set +e
     out=$(dart format -o none --set-exit-if-changed "$file")
     exitval="$?"
+    set -e
+
     retval="$exitval"
 else
     echo -n "ignoring"