fix for fsh -v hanging

Fixes #889

Author: starpit

app/headless.js

@@ -411,7 +411,7 @@ rowify._default = ({name}) => ({name:pn(name)})
  *
  */
 const print = (msg, logger=log, stream=process.stdout, color='reset', ok='ok') => {
-    if (verbose) {
+    if (verbose && typeof msg === 'string') {
         // user asked for verbose output
         return prettyJSON(msg, logger)
     }
@@ -618,6 +618,7 @@ const main = (app, mainFunctions) => {
         debug('plugins initialized')
 
         if (insufficientArgs()) {
+            debug('insufficient args, invoking help command')
             return eval('help')
         }
 

tests/tests/passes/02/headless.js

@@ -85,6 +85,10 @@ describe('Headless mode', function() {
        .then(cli.expectOK('ok'))
        .catch(common.oops(this)))
 
+    it('should show top-level help with fsh -v', () => cli.do('-v')
+       .then(cli.expectError(1, 'Shell Docs / Getting Started'))
+       .catch(common.oops(this)))
+
     it('should show top-level help with no arguments', () => cli.do('')
        .then(cli.expectError(1, 'Shell Docs / Getting Started'))
        .catch(common.oops(this)))