wikimedia / mediawiki

		}

		$ltPos = strpos( $str, '<' );

		if ( $ltPos === false || $ltPos > $colonPos ) {

			# Easy; no tag nesting to worry about

			$before = substr( $str, 0, $colonPos );

			$after = substr( $str, $colonPos + 1 );

			return $colonPos;

		}

		# Ugly state machine to walk through avoiding tags.

		$state = self::COLON_STATE_TEXT;

					$state = self::COLON_STATE_TAGSTART;

					break;

				case ":":

					if ( $level === 0 ) {

						# We found it!

						$before = substr( $str, 0, $i );

						$after = substr( $str, $i + 1 );

						return $i;

					}

					# Embedded in a tag; don't break it.

					break;

				default:

						return false;

					}

					$ltPos = strpos( $str, '<', $i );

					if ( $level === 0 ) {

						if ( $ltPos === false || $colonPos < $ltPos ) {

							# We found it!

							$before = substr( $str, 0, $colonPos );

							$after = substr( $str, $colonPos + 1 );

							return $i;

						}

					}

					if ( $ltPos === false ) {

						# Nothing else interesting to find; abort!

						# We're nested, but there's no close tags left. Abort!