Title: Apache™ FOP: Known Issues
$Revision: 1298724 $
# 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 Bugzilla](../bugs.html)
- [the task list in the Wiki](http://wiki.apache.org/xmlgraphics-fop/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 (Bugzilla #36391)
- 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 (Bugzilla #36356)