Hi,

on file atahualpa/comments.php (version 3.6.4) at row 115 I have this istruction:

PHP Code:

$comment_form_settings = array(
    'fields'               => apply_filters( 'comment_form_default_fields', $fields ),
    'comment_field'        => '<p><textarea name="comment" id="comment" rows="10" cols="10" tabindex="4"></textarea></p>',
    'must_log_in'          => '<p class="must-log-in">' .  sprintf( __( 'You must be <a href="%s">logged in</a> to post a comment.' ), wp_login_url( apply_filters( 'the_permalink', get_permalink( $post_id ) ) ) ) . '</p>',
    'logged_in_as'         => '<p class="logged-in-as">' . sprintf( __( 'Logged in as <a href="%1$s">%2$s</a>. <a href="%3$s" title="Log out of this account">Log out?</a>' ), admin_url( 'profile.php' ), $user_identity, wp_logout_url( apply_filters( 'the_permalink', get_permalink( $post_id ) ) ) ) . '</p>',
    'comment_notes_before' => '',
    'comment_notes_after'  => $comment_notes_after,
    'id_form'              => 'commentform',
    'id_submit'            => 'submit',
    'title_reply'          => __( 'Leave a Reply' ),
    'title_reply_to'       => __( 'Leave a Reply to %s' ),
    'cancel_reply_link'    => __( 'Cancel reply' ),
    'label_submit'         => __( 'Post Comment' )
); 


The "__" function don't set the second parameter to 'atahualpa'. Example:

PHP Code:

'title_reply'          => __( 'Leave a Reply' ), 


becomes

PHP Code:

'title_reply'          => __( 'Leave a Reply', 'atahualpa' ), 


I don't search on all files to test if this problem is present into others file.
By,
Michele
sorry for my english

The second parameter to the __() function, the textdomain, is optional and defaults to 'default'. This means that the string will be translated if, and only if, it's found in the default textdomain. The default domain is the one of WordPress itself.

So this may work if the string, here "Leave a Reply", is found in WordPress and translated to your language. The problem is that such strings may change from one WordPress release to another.

So I support that this should be fixed.

Added to 3.6.5 TODO