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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 |
|---|---|
| 176 | * htmlspecialchars. Use this filter to remove or change the processing. Passes a context |
| 177 | * indicating if the line is added, deleted or unchanged. |
| 178 | * |
| 179 | * @since 4.1.0 |
| 180 | * |
| 181 | * @param string $processed_line The processed diffed line. |
| 182 | * @param string $line The unprocessed diffed line. |
| 183 | * @param string $context The line context. Values are 'added', 'deleted' or 'unchanged'. |
| 184 | */ |
| 185 | $line = apply_filters( 'process_text_diff_html', $processed_line, $line, 'added' ); |
| 186 | } |
| 187 | |
| 188 | if ( $this->_show_split_view ) { |
| 189 | $r .= '<tr>' . $this->emptyLine() . $this->addedLine( $line ) . "</tr>\n"; |
| 190 | } else { |
| 191 | $r .= '<tr>' . $this->addedLine( $line ) . "</tr>\n"; |
| 192 | } |
| 193 | } |
| 194 | return $r; |
| Line | Code |
| 202 | * @return string |
| 203 | */ |
| 204 | public function _deleted( $lines, $encode = true ) { |
| 205 | $r = ''; |
| 206 | foreach ( $lines as $line ) { |
| 207 | if ( $encode ) { |
| 208 | $processed_line = htmlspecialchars( $line ); |
| 209 | |
| 210 | /** This filter is documented in wp-includes/wp-diff.php */ |
| 211 | $line = apply_filters( 'process_text_diff_html', $processed_line, $line, 'deleted' ); |
| 212 | } |
| 213 | if ( $this->_show_split_view ) { |
| 214 | $r .= '<tr>' . $this->deletedLine( $line ) . $this->emptyLine() . "</tr>\n"; |
| 215 | } else { |
| 216 | $r .= '<tr>' . $this->deletedLine( $line ) . "</tr>\n"; |
| 217 | } |
| 218 | } |
| 219 | return $r; |
| 220 | } |
| Line | Code |
| 227 | * @return string |
| 228 | */ |
| 229 | public function _context( $lines, $encode = true ) { |
| 230 | $r = ''; |
| 231 | foreach ( $lines as $line ) { |
| 232 | if ( $encode ) { |
| 233 | $processed_line = htmlspecialchars( $line ); |
| 234 | |
| 235 | /** This filter is documented in wp-includes/wp-diff.php */ |
| 236 | $line = apply_filters( 'process_text_diff_html', $processed_line, $line, 'unchanged' ); |
| 237 | } |
| 238 | if ( $this->_show_split_view ) { |
| 239 | $r .= '<tr>' . $this->contextLine( $line ) . $this->contextLine( $line ) . "</tr>\n"; |
| 240 | } else { |
| 241 | $r .= '<tr>' . $this->contextLine( $line ) . "</tr>\n"; |
| 242 | } |
| 243 | } |
| 244 | return $r; |
| 245 | } |