edit template-tags.php

Doesn’t seem to work – does the same thing all the other solutions I tried – adds a bunch of crazy code at the top of my blog.

My entire functions.php looks like this, is it correct? –

<?php
/*
*  Connect Style Sheets
*/
add_action( 'wp_enqueue_scripts', 'theme_enqueue_styles' );
function theme_enqueue_styles() {
    wp_enqueue_style( 'parent-style', get_template_directory_uri() . '/style.css' );
    wp_enqueue_style( 'child-style', get_stylesheet_uri(), array( 'parent-style' ) );
}
?>

if ( ! function_exists( 'twentyfifteen_entry_meta' ) ) :
/**
 * Prints HTML with meta information for the categories, tags.
 *
 * @since Twenty Fifteen 1.0
 */
function twentyfifteen_entry_meta() {
[...]
		$categories_list = get_the_category_list( _x( ', ', 'Used between list items, there is a space after the comma.', 'twentyfifteen' ) );
		if ( $categories_list && twentyfifteen_categorized_blog() ) {
			printf( '<span class="cat-links"><span class="screen-reader-text">%1$s </span>%2$s</span><br />',
				_x( 'Categories', 'Used before category names.', 'twentyfifteen' ),
				$categories_list
			);
		}
[..]
}
endif;

Whatever I did, it messed it up again. I couldn’t even get back in the editor to fix it – I had to undo in FTP.

Where does the function that needs to be replaced begin & end? Do I need the […} and [..} parts? Where does the ?> part go? Do I need to include the if ( ! function_exists( 'twentyfifteen_entry_meta' ) ) : part, or do I start with function twentyfifteen_entry_meta() {?

My parent template-tags.php portion that I need to edit is this – I just don’t know exactly what parts need to be added to the child’s functions.php.

if ( ! function_exists( 'twentyfifteen_entry_meta' ) ) :
/**
 * Prints HTML with meta information for the categories, tags.
 *
 * @since Twenty Fifteen 1.0
 */
function twentyfifteen_entry_meta() {
	if ( is_sticky() && is_home() && ! is_paged() ) {
		printf( '<span class="sticky-post">%s</span>', __( 'Featured', 'twentyfifteen' ) );
	}

	$format = get_post_format();
	if ( current_theme_supports( 'post-formats', $format ) ) {
		printf( '<span class="entry-format">%1$s<a href="%2$s">%3$s</a></span>',
			sprintf( '<span class="screen-reader-text">%s </span>', _x( 'Format', 'Used before post format.', 'twentyfifteen' ) ),
			esc_url( get_post_format_link( $format ) ),
			get_post_format_string( $format )
		);
	}

	if ( in_array( get_post_type(), array( 'post', 'attachment' ) ) ) {
		$time_string = '<time class="entry-date published updated" datetime="%1$s">%2$s</time>';

		if ( get_the_time( 'U' ) !== get_the_modified_time( 'U' ) ) {
			$time_string = '<time class="entry-date published" datetime="%1$s">%2$s</time><time class="updated" datetime="%3$s">%4$s</time>';
		}

		$time_string = sprintf( $time_string,
			esc_attr( get_the_date( 'c' ) ),
			get_the_date(),
			esc_attr( get_the_modified_date( 'c' ) ),
			get_the_modified_date()
		);

		printf( '<span class="posted-on"><span class="screen-reader-text">%1$s </span><a href="%2$s" rel="bookmark">%3$s</a></span>',
			_x( 'Posted on', 'Used before publish date.', 'twentyfifteen' ),
			esc_url( get_permalink() ),
			$time_string
		);
	}

	if ( 'post' == get_post_type() ) {
		if ( is_singular() || is_multi_author() ) {
			printf( '<span class="byline"><span class="author vcard"><span class="screen-reader-text">%1$s </span><a class="url fn n" href="%2$s">%3$s</a></span></span>',
				_x( 'Author', 'Used before post author name.', 'twentyfifteen' ),
				esc_url( get_author_posts_url( get_the_author_meta( 'ID' ) ) ),
				get_the_author()
			);
		}

		$categories_list = get_the_category_list( _x( ', ', 'Used between list items, there is a space after the comma.', 'twentyfifteen' ) );
		if ( $categories_list && twentyfifteen_categorized_blog() ) {
			printf( '<span class="cat-links"><span class="screen-reader-text">%1$s </span>%2$s</span>',
				_x( 'Categories', 'Used before category names.', 'twentyfifteen' ),
				$categories_list
			);
		}

		$tags_list = get_the_tag_list( '', _x( ', ', 'Used between list items, there is a space after the comma.', 'twentyfifteen' ) );
		if ( $tags_list ) {
			printf( '<span class="tags-links"><span class="screen-reader-text">%1$s </span>%2$s</span>',
				_x( 'Tags', 'Used before tag names.', 'twentyfifteen' ),
				$tags_list
			);
		}
	}

	if ( is_attachment() && wp_attachment_is_image() ) {
		// Retrieve attachment metadata.
		$metadata = wp_get_attachment_metadata();

		printf( '<span class="full-size-link"><span class="screen-reader-text">%1$s </span><a href="%2$s">%3$s &times; %4$s</a></span>',
			_x( 'Full size', 'Used before full size attachment link.', 'twentyfifteen' ),
			esc_url( wp_get_attachment_url() ),
			$metadata['width'],
			$metadata['height']
		);
	}

	if ( ! is_single() && ! post_password_required() && ( comments_open() || get_comments_number() ) ) {
		echo '<span class="comments-link">';
		/* translators: %s: post title */
		comments_popup_link( sprintf( __( 'Leave a comment<span class="screen-reader-text"> on %s</span>', 'twentyfifteen' ), get_the_title() ) );
		echo '</span>';
	}
}
endif;