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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )apply_filters( "hook_name", "what_to_filter" ).Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
This hook occurs 3 times in this file.
| Line | Code |
|---|---|
| 199 | * htmlspecialchars. Use this filter to remove or change the processing. Passes a context |
| 200 | * indicating if the line is added, deleted or unchanged. |
| 201 | * |
| 202 | * @since 4.1.0 |
| 203 | * |
| 204 | * @param string $processed_line The processed diffed line. |
| 205 | * @param string $line The unprocessed diffed line. |
| 206 | * @param string $context The line context. Values are 'added', 'deleted' or 'unchanged'. |
| 207 | */ |
| 208 | $line = apply_filters( 'process_text_diff_html', $processed_line, $line, 'added' ); |
| 209 | } |
| 210 | |
| 211 | if ( $this->_show_split_view ) { |
| 212 | $r .= '<tr>' . $this->emptyLine() . $this->addedLine( $line ) . "</tr>\n"; |
| 213 | } else { |
| 214 | $r .= '<tr>' . $this->addedLine( $line ) . "</tr>\n"; |
| 215 | } |
| 216 | } |
| 217 | return $r; |
| Line | Code |
| 225 | * @return string |
| 226 | */ |
| 227 | public function _deleted( $lines, $encode = true ) { |
| 228 | $r = ''; |
| 229 | foreach ( $lines as $line ) { |
| 230 | if ( $encode ) { |
| 231 | $processed_line = htmlspecialchars( $line ); |
| 232 | |
| 233 | /** This filter is documented in wp-includes/wp-diff.php */ |
| 234 | $line = apply_filters( 'process_text_diff_html', $processed_line, $line, 'deleted' ); |
| 235 | } |
| 236 | if ( $this->_show_split_view ) { |
| 237 | $r .= '<tr>' . $this->deletedLine( $line ) . $this->emptyLine() . "</tr>\n"; |
| 238 | } else { |
| 239 | $r .= '<tr>' . $this->deletedLine( $line ) . "</tr>\n"; |
| 240 | } |
| 241 | } |
| 242 | return $r; |
| 243 | } |
| Line | Code |
| 250 | * @return string |
| 251 | */ |
| 252 | public function _context( $lines, $encode = true ) { |
| 253 | $r = ''; |
| 254 | foreach ( $lines as $line ) { |
| 255 | if ( $encode ) { |
| 256 | $processed_line = htmlspecialchars( $line ); |
| 257 | |
| 258 | /** This filter is documented in wp-includes/wp-diff.php */ |
| 259 | $line = apply_filters( 'process_text_diff_html', $processed_line, $line, 'unchanged' ); |
| 260 | } |
| 261 | if ( $this->_show_split_view ) { |
| 262 | $r .= '<tr>' . $this->contextLine( $line ) . $this->contextLine( $line ) . "</tr>\n"; |
| 263 | } else { |
| 264 | $r .= '<tr>' . $this->contextLine( $line ) . "</tr>\n"; |
| 265 | } |
| 266 | } |
| 267 | return $r; |
| 268 | } |