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Check for is_rtl() existence before checking it in the fallback condition in wp_admin_css(). Prevents fatal errors when plugins call wp_admin_css() on a non-existent (probably removed) stylesheet. props SergeyBiryukov, fixes #19913.

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git-svn-id: https://develop.svn.wordpress.org/trunk@20326 602fd350-edb4-49c9-b593-d223f7449a82
This commit is contained in:
Andrew Nacin 2012-03-30 13:10:52 +00:00
parent 0fe62673e5
commit 1d7714d923
1 changed files with 1 additions and 1 deletions
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wp-includes/general-template.php
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@ -2100,7 +2100,7 @@ function wp_admin_css( $file = 'wp-admin', $force_echo = false ) {
}
echo apply_filters( 'wp_admin_css', "<link rel='stylesheet' href='" . esc_url( wp_admin_css_uri( $file ) ) . "' type='text/css' />\n", $file );
if ( is_rtl() )
if ( function_exists( 'is_rtl' ) && is_rtl() )
echo apply_filters( 'wp_admin_css', "<link rel='stylesheet' href='" . esc_url( wp_admin_css_uri( "$file-rtl" ) ) . "' type='text/css' />\n", "$file-rtl" );
}