Fix drush-ops#40. Added commented out shell alias as discussed. I als…

…o fixed a nasty shell alias bug which this revealed. It had been previously reported at https://drupal.org/node/1967346. I used str_getcsv() to fix it and that function is not available in php 5.2 so backport to 5.x needs work.

examples/example.drushrc.php

@@ -81,6 +81,7 @@
 # $options['shell-aliases']['online'] = 'variable-delete -y --exact maintenance_mode';
 # $options['shell-aliases']['dis-all'] = '!drush -y dis `drush pml --status=enabled --type=module --no-core --pipe`';
 # $options['shell-aliases']['self-alias'] = 'site-alias @self --with-db --alias-name=new';
+# $options['shell-aliases']['site-get'] = '@none php-eval "return drush_sitealias_site_get();"';
 
 // Add a 'pm-clone' to simplify git cloning from drupal.org.
 # $options['shell-aliases']['pm-clone'] = 'pm-download --gitusername=YOURUSERNAME --package-handler=git_drupalorg';

includes/command.inc

@@ -1884,7 +1884,8 @@ function drush_shell_alias_replace() {
         $unmatched_replacements = preg_replace('/[{}]/', '', $unmatched_replacements);
         return drush_set_error('DRUSH_SHELL_ALIAS_UNMATCHED_REPLACEMENTS', dt('The shell alias @alias-name uses replacements "@unmatched". You must use this command with a site alias (e.g. `drush @myalias @alias-name ...`) that defines all of these variables.', array('@alias-name' => $first, '@unmatched' => $unmatched_replacements)));
       }
-      $alias_value = explode(' ', $alias_value);
+      // Respect quoting. See http://stackoverflow.com/questions/2202435/php-explode-the-string-but-treat-words-in-quotes-as-a-single-word
+      $alias_value = str_getcsv($alias_value, ' ');
     }
     drush_log(dt('Shell alias found: !key => !value', array('!key' => $first, '!value' => implode(' ', $alias_value))), 'debug');
     $replacement = $alias_value;