Problem redeclaring funtion in functions.php in a child theme

Is it possible that the system checks if the twentyeleven_continue_reading_link() function exists and since it doesn’t it declares it but when functions.php from the parent theme is loaded it tries to declare it again and that’s why it gives the error?

That is correct. Twenty Eleven does not check for the existence of the function and tries to re-declare it.

However, as far as I can tell, that function is only called by the twentyeleven_custom_excerpt_more() function which is added as a filter to the get_the_excerpt filter hook.

From the TwentyEleven fuctions.php:

* To override this link in a child theme, remove the filter and add your own
* function tied to the get_the_excerpt filter hook.

So you would remove the filter from get_the_excerpt and add your own which calls your own continue_reading_link function.

Thank you!
I tried that but bumped into another problem. Now I don’t get the error but I got two “Continue reading ” links :). The first is as I want it and the second is the default. As if the old filter stays and both filters are called – first the one from the child theme then the default… Any help, plese!
Here is the code:

remove_filter( 'get_the_excerpt', 'twentyeleven_custom_excerpt_more' );
function sharko_custom_excerpt_more( $output ) {
	if ( has_excerpt() && ! is_attachment() ) {
		$output .= sharko_continue_reading_link();
	}
	return $output;
}
add_filter( 'get_the_excerpt', 'sharko_custom_excerpt_more' );

Probably the remove_filter didn’t work because the original filter is created in the parent theme’s functions.php which is loaded after the child theme?

I wonder if it would work to put the remove_filter inside the function?

The most recent post now has the two links. The others are ok.

OK. You will need to add an action to the ‘after_setup_theme’ hook.

Try using this in your functions.php:

function sharko_remove_excerpt_filter() {
   remove_filter( 'get_the_excerpt', 'twentyeleven_custom_excerpt_more' );
}
add_action( 'after_setup_theme', 'sharko_remove_excerpt_filter' );
function sharko_custom_excerpt_more( $output ) {
	if ( has_excerpt() && ! is_attachment() ) {
		$output .= sharko_continue_reading_link();
	}
	return $output;
}
add_filter( 'get_the_excerpt', 'sharko_custom_excerpt_more' );

Thank You!!!
That did it.
I am posting the whole code for future reference – just in case.

<?php
/**
 * This file provides additional functions for sharko's theme.
 */

 /**
 * Returns a "Continue Reading" link in BG for excerpts
 */
function sharko_continue_reading_link() {
	return ' <a href="'. esc_url( get_permalink() ) . '">' . __( 'прочети <span class="meta-nav">&rarr;</span>', 'twentyeleven' ) . '</a>';
}

/*
 * Removes the get_the_exerpt filter
 */
function sharko_remove_excerpt_filter() {
   remove_filter( 'get_the_excerpt', 'twentyeleven_custom_excerpt_more' );
}
add_action( 'after_setup_theme', 'sharko_remove_excerpt_filter' );

/**
 * Adds a pretty "Continue Reading" link to custom post excerpts.
 *
 */

function sharko_custom_excerpt_more( $output ) {
	if ( has_excerpt() && ! is_attachment() ) {
		$output .= sharko_continue_reading_link();
	}
	return $output;
}
add_filter( 'get_the_excerpt', 'sharko_custom_excerpt_more' );
?>