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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 |
|---|---|
| 204 | * htmlspecialchars. Use this filter to remove or change the processing. Passes a context |
| 205 | * indicating if the line is added, deleted or unchanged. |
| 206 | * |
| 207 | * @since 4.1.0 |
| 208 | * |
| 209 | * @param string $processed_line The processed diffed line. |
| 210 | * @param string $line The unprocessed diffed line. |
| 211 | * @param string $context The line context. Values are 'added', 'deleted' or 'unchanged'. |
| 212 | */ |
| 213 | $line = apply_filters( 'process_text_diff_html', $processed_line, $line, 'added' ); |
| 214 | } |
| 215 | |
| 216 | if ( $this->_show_split_view ) { |
| 217 | $r .= '<tr>' . $this->emptyLine() . $this->addedLine( $line ) . "</tr>\n"; |
| 218 | } else { |
| 219 | $r .= '<tr>' . $this->addedLine( $line ) . "</tr>\n"; |
| 220 | } |
| 221 | } |
| 222 | return $r; |
| Line | Code |
| 230 | * @return string |
| 231 | */ |
| 232 | public function _deleted( $lines, $encode = true ) { |
| 233 | $r = ''; |
| 234 | foreach ( $lines as $line ) { |
| 235 | if ( $encode ) { |
| 236 | $processed_line = htmlspecialchars( $line ); |
| 237 | |
| 238 | /** This filter is documented in wp-includes/wp-diff.php */ |
| 239 | $line = apply_filters( 'process_text_diff_html', $processed_line, $line, 'deleted' ); |
| 240 | } |
| 241 | if ( $this->_show_split_view ) { |
| 242 | $r .= '<tr>' . $this->deletedLine( $line ) . $this->emptyLine() . "</tr>\n"; |
| 243 | } else { |
| 244 | $r .= '<tr>' . $this->deletedLine( $line ) . "</tr>\n"; |
| 245 | } |
| 246 | } |
| 247 | return $r; |
| 248 | } |
| Line | Code |
| 255 | * @return string |
| 256 | */ |
| 257 | public function _context( $lines, $encode = true ) { |
| 258 | $r = ''; |
| 259 | foreach ( $lines as $line ) { |
| 260 | if ( $encode ) { |
| 261 | $processed_line = htmlspecialchars( $line ); |
| 262 | |
| 263 | /** This filter is documented in wp-includes/wp-diff.php */ |
| 264 | $line = apply_filters( 'process_text_diff_html', $processed_line, $line, 'unchanged' ); |
| 265 | } |
| 266 | if ( $this->_show_split_view ) { |
| 267 | $r .= '<tr>' . $this->contextLine( $line ) . $this->contextLine( $line ) . "</tr>\n"; |
| 268 | } else { |
| 269 | $r .= '<tr>' . $this->contextLine( $line ) . "</tr>\n"; |
| 270 | } |
| 271 | } |
| 272 | return $r; |
| 273 | } |