[#156] Fix error when first arg is symbol

CHANGELOG.md

@@ -32,6 +32,8 @@ The format is based on [Keep a Changelog].
   details.
 * Npx commands in apheleia-formatters are not overwritten when
   expanding binary path to node_modules directory ([#152]).
+* Error is no longer reported when the first element of a command is
+  an evaluable form rather than a literal string ([#156]).
 
 ### Formatters
 * [`crystal tool

apheleia.el

@@ -766,8 +766,6 @@ cmd is to be run."
       (when (memq 'npx command)
         (setq npx t)
         (setq command (remq 'npx command)))
-      (unless (stringp (car command))
-        (error "Command cannot start with %S" (car command)))
       (when (and npx remote-match)
         (when-let ((project-dir
                     (locate-dominating-file