CRM_Utils_File::sourceSQLFile too greedy when stripping comments

This function includes these lines:

    //get rid of comments starting with # and --

    $string = preg_replace("/^#[^\n]*$/m", "\n", $string);
    $string = preg_replace("/^(--[^-]).*/m", "\n", $string);

From my testing, it appears this causes the comment AND the next line to be stripped. As a result, this SQL fails, because the CREATE TABLE line is stripped and the query that's executed starts with `id` int(10) ... :

--
-- Do something.
--
CREATE TABLE IF NOT EXISTS `mytable` (
  `id` int(10) unsigned NOT NULL
);

The workaround is to add a newline after the third comment, like so:

--
-- Do something.
--

CREATE TABLE IF NOT EXISTS `mytable` (
  `id` int(10) unsigned NOT NULL
);

I think this is related to the /m regex modifier, but haven't yet got my head around what that modifier does.