Title: Apache(tm) FOP: Known Issues #Apache™ FOP: Known Issues ## Known issues { #Known-issues} This page lists currently known issues in the current release. For additional information on known issues in Apache™ FOP, please have a look at the following pages, too:
• [the bug list in Jira](../bugs.html)
• [the task list in the Wiki](https://cwiki.apache.org/confluence/display/XMLGRAPHICSFOP/FOPProjectTasks) Apache™ FOP has an extensive automated testing infrastructure. Parts of this infrastructure are several sets of test cases. When a test case is listed in disabled-testcases.xml it is disabled in the JUnit tests during the normal build process. This indicates a problem in the current codebase. When a bug is fixed or a missing feature is added the entry for the relevant test case(s) are removed. ### FO Tree { #FO-Tree} This section lists disabled test cases in the test suite for the FO tree tests, at the time of the release. **demo-test-failure.fo** (demo test failure): *TODO: Add missing description in disabled-testcases.xml!* **from-table-column_marker.fo** (Markers and core function evaluation): The code currently evaluates this function according to the column in which the marker appears in the source document, rather than the column it is retrieved in. ### Layout Engine { #Layout-Engine} This section lists disabled test cases in the test suite for the layout engine tests, at the time of the release. **basic-link_external-destination_2.xml** (External link around an SVG not properly sized): The bpd trait of the inlineparent area for the basic-link is not sized correctly if it wraps an image that is higher than the nominal line. **block-container_space-before_space-after_3.xml** (Auto-height block-containers produce fences): Block-containers with no height currently don't create a fence for spaces as they should (they behave like a normal block). **block_font-stretch.xml** (font-stretch NYI): Font-stretch is not implemented, yet. **block_hyphenation_linefeed_preserve.xml** (Hyphenation with preserved linefeeds): When hyphenation is enabled and linefeeds are preserved, the text is output multiple times. **block_linefeed-treatment.xml** (linefeed-treatment): Preserved linefeeds in a fo:character are not handled correctly. **block_white-space-treatment_3.xml** (white-space-treatment): White space handling incorrectly stops at fo:inline boundaries when it comes to formatter generated line breaks. **block_space-before_space-after_8.xml** (Empty blocks produce fences): An empty block currently produces a fence for stacking constraints which it shouldn't. **block_white-space_nbsp_2.xml** (block white-space nbsp 2): The nbsp given as an fo:character is not adjustable and therefore the justification does not work in this case. **block_word-spacing.xml** (block word-spacing): Word-spacing may not work as expected. **block_word-spacing_text-align_justify.xml** (block word-spacing text-align justify): Word-spacing may not work as expected. **external-graphic_oversized.xml** (external-graphic don't shrink): Images currently don't shrink so they fit on a page when they are too big and shrinking is allowed to happen (min/opt/max). **external-graphic_src_uri.xml** (Test case with HTTP URL): Doesn't work behind a proxy which requires authorization. **footnote_space-resolution.xml** (Space Resolution in foot note area): Space resolution does not work between footnote regions. **inline_block_nested_3.xml** (NPE for table inside an inline): Placing a table as a child of an fo:inline produces a NullPointerException. **inline-container_block_nested.xml** (inline-container is not implemented, yet.): inline-container is not implemented, yet. Content of an inline-container will get swallowed. The test case contains no checks. **inline-container_border_padding.xml** (inline-container is not implemented, yet.): inline-container is not implemented, yet. Content of an inline-container will get swallowed. **inline_letter-spacing.xml** (inline letter-spacing): Letter-spacing may not work as expected within fo:inline. **inline_word-spacing.xml** (inline word-spacing): Word-spacing may not work as expected within fo:inline. **inline_word-spacing_text-align_justify.xml** (inline word-spacing text-align justify): *TODO: Add missing description in disabled-testcases.xml!* **leader-alignment.xml** (leader-alignment NYI): Leader-alignment is not yet implemented. **leader_leader-pattern_use-content_bug.xml** (leader-pattern="use-content": Problem with line height): Line height is not correctly calculated for use-content leaders whose height is larger than the rest of the line. See also: [http://www.nabble.com/leaders-with-leader-pattern%3D%22use-content%22-t546244.html](http://www.nabble.com/leaders-with-leader-pattern%3D%22use-content%22-t546244.html) **page-breaking_4.xml** (Page breaking doesn't deal with IPD changes): Page breaking currently doesn't support changing available IPD between pages of a single page-sequence. Element list generation has to be reset to redetermine line breaks in this case. **page-breaking_6.xml** (Overflow handing is incomplete): Line breaking is not 100% correct when there's too little space. Overflows are not detected and warned. **page-height_indefinite_simple.xml** (Indefinite page height handling is imcomplete): A RuntimeException is thrown for a page of indefinite height. Lots of warnings. **page-number-citation_background-image.xml** (page-number-citation: Problem with background-image): Background-images on page-number-citations are not placed correctly. **page-number-citation_complex_1.xml** (IDs are not working on all FO elements): The "id" attributes are not properly handled for all block-level FO elements. **page-number-citation_complex_2.xml** (IDs are not working on all FO elements): The "id" attributes are not properly handled for all inline-level FO elements. **region-body_column-count_footnote.xml** (Footnotes in multi-column documents): Footnotes may overlap with text of the region-body in multi-column documents. **region-body_column-count_balance_4col.xml** (Column Balancing problems): Situation in a 4-column document where the column balancing doesn't work and even causes some content to disappear. **region-body_column-count_bug36356.xml** (Column Balancing problems): Column balancing doesn't work as expected. **table-cell_empty_area_with_marker.xml** (table-cell empty area with marker.xml): A table-cell producing an empty area does currently not add any markers to a page. See TODO entry in AreaAdditionUtil. **table_border-width_conditionality.xml** (Border conditionality on table): The code should be ok, but the test case uses shorthands and therefore is probably not expressing the indended outcome according to the spec. The test case should be revisited. **block_shy_linebreaking_hyph.xml** (Soft hyphen with normal hyphenation enabled): A soft hyphen should be a preferred as break compared to a normal hyphenation point but is not. **keep_within-page_multi-column_overflow.xml** (Page-keep not respected in multi-column layout): The block should cause overflow in the last column on the page, rather than be broken. ### Other known issues { #Other-known-issues} This section lists other known issues. - MIF and SVG output support have not been restored, yet. - RTF output is inferior to other output formats supported by FOP. For details, please see the "Output Targets" page of the release you're using. - Auto table layout is not implemented, yet. - Footnotes may overlap with text of the region-body in multi-column documents. - Space resolution does not work between footnote regions. - There's a problem involving nested block-containers and reference-orientation 180/-180 (see issue [FOP-1036](https://issues.apache.org/jira/browse/FOP-1036)) - block-containers with no height currently don't create a fence for spaces as they should (they behave like a normal block). - Preserved linefeeds in fo:character are not handled correctly. - An empty block currently produces a fence for stacking constraints which it shouldn't. - There are several small problems around white space handling. - Images currently don't shrink so they fit on a page when they are too big and shrinking is allowed to happen. - inline-container may not work as expected. - letter-spacing and word-spacing properties may not work as expected. - leaders with leader-pattern="use-content" may not work as expected. - keep-with-previous doesn't work inside tables and lists, yet. - If two consecutive pages don't have the same available width, the content currently isn't properly fit into the available space on the new page. - background-images on page-number-citations are not placed correctly. - Not all FO elements can be referenced by their "id", most notably: table-body, table-header, table-footer and table-row. - Border and padding conditionality are not supported on table-cells, yet. - Column balancing in multi-column documents may not work as expected ([FOP-1034](https://issues.apache.org/jira/browse/FOP-1034))