CVS log for loncom/xml/londefdef.pm

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- For 2.11.4 (modified)
  Include changes in 1.475

- For 2.11
  Backport 1.470, 1.471

- Available editors in Course Authoring Space, or when editing an html file
  created in a course folder using the Course Editor is a domain default,
  which can be overridden in specific course(s) by a Domain Coordinator.

- For 2.11.4 (modified)
  Include remainder of changes in 1.474 omitted from earlier 1.456.2.6.2.3

- For 2.11.4 (modified)
  Include changes in 1.474

- If Daxe available in current Authoring Space, include "Edit with Daxe"
  buttons to switch to Daxe when editing an assessment item with colorful
  editor or with XML (text) editor or an html file with standard editor.

- For 2.11.4 (modified)
  Include changes in 1.473

- No breadcrumbs trail in modal pop-up when previewing aboutme, syllabus,
  roster, and pdf documents from links in Course Editor.
- Breadcrumbs trails for "Supplemental" and "Main" content more consistent:
  - No Main Menu link as first item if symb or folderpath available
  - No Return to Last location link/icon if symb or folderpath available
- Don't set supplementalflag to 1 for documents uploaded to Main Content
  area which require "showdoc", so breadcrumb trail is available to students.

- Breadcrumbs text when displaying/editing resource in Course Authoring Space.

- For 2.11.4 (modified)
  Include changes in 1.467, 1.470. 1.471

- Scale value of width_param *before* setting height_param to TeXheight.

- Typo: height not heigth

- Remove trailing whitespace

- Remove trailing whitespace. No code changes.

- Coding style.

- For 2.11
  Backport 1.466

- Bug 6954

- For 2.11
  Backport 1.465

- Facilitate localization.

- For 2.11
  Backport 1.458

- For 2.11
  - Backport 1.463

fixed paragraph align with tex target, added some basic CSS support with style attribute

fixed a bug with <h1 align="CENTER"> introduced in revision 1.199

- For 2.11
  - Backport 1.461, 1.462

- LON-CAPA for Actuarial Science
   - actuarialangle available in PDF printout.
   e.g.,
<tex>
 $ \actuarialangle{n} $
</tex>
<web>
n&#8423;
</web>

- Consistent formatting for 'usepackage' items in &latex_header().
- Remove some duplicated 'usepackage' items.

- For 2.11
  - Backport 1.460

- Eliminate "Unescaped left brace in regex is deprecated," warnings
  in error_log with perl 5.22 (Ubuntu 16 LTS).

- Course "Authoring" Space
  "Import a File" and "Image" blocks in Colorful Editor include a "Choose File"
  link which allows selection of published files from "Course Authoring" Space,
  or upload of a new file (with auto-publication).

added a warning for the use of <m> without math delimiters

Added Daxe editing for HTML documents, fixed issues with case mixing in task documents

- Remove trailing white space.

- Bug 6728.
  - Support printing where <img> has .svg file as src.

- Support upload of Camtasia 8 files to the Supplemental Content area.

- No need to add an extlink or encrypt the src attribute (if urlhidden active)
  in cases where image data are included directly in <img> tag's src attribute
  using a "data URI".

- On Apache/SSL servers syllabus should always be served by http:// to avoid
  "mixed content" issue when syllabus is an external resource on http:// server).
  - Set $env{'request.use_absolute'} and pass in args to start page so postdata
    is preserved. (bug 6662).
  - Code used for same purpose in rat/lonwrapper.pm rev. 1.44 for external
    resources moved to lonacc.pm to facilitate re-use.
- Detect if syllabus template replaced with uploaded PDF or link to external
  PDF file, and send as arg in call to lonwrapper.pm, to circumvent lack of
  scrolling for multi-page PDFs in iframes on iOS.

- Efficiency.
  Only call &printsuppression() from loncommon::headtag() to check if
  printing is disabled, for cases where that might apply.

- Actually do something with the result of the chreflocation() call.

- Support self-closing iframe tag.

- Access to dependencies/links in HTML files uploaded directly to a course,
  where dependency or linked item was also uploaded directly to the same
  course.
  - Fix regexp used to identify items referenced in javascript object in text
   within <script></script>.
  - .js files in src attribute of <script> tag still retrieved, even if
   (type ="text/javascript" is missing) i.e., not valid xhtml.

- Access to dependencies/links in HTML files uploaded directly to a course,
  where dependency or linked item was also uploaded directly to the same
  course.
  - Code used to clean up relative paths and/or check for valid absolute path
    moved from within scripttag::start_script() to new subroutine:
    londefdef::clean_docs_httpref() to facilitate reuse.
 - Access can be granted to dependencies or linked items which are:
   (a) referenced in src attribute of iframe tag
   (b) referenced in src attribute of script tag (javascript)
   (c) referenced in href attribute of a tag
   (d) referenced in javascript object in text with <script></script>
      via set.FlashPlayerSwf
          set.MediaSrc
          set.XMPSrc
          set.ConfigurationSrc
          set.PosterImageSrc
      e.g., TSC.playerConfiguration.set.FlashPlayerSwf("somepath/file_controller.swf")
      to support upload of Camtasia player directly to a course (Camtasia 8.1).

- Suppress display of header items when displaying iframe in a file in
  Authoring Space, where src attribute in /res or a relative path
  (inhibitmenu=yes will have been appended to query string in src).

- Bug 6668
  - Append inhibitmenu=yes in a query string within an iframe's src attribute
    where src points at an HTML resource (/uploaded/, /res, or relative path).
  - Example use case: <iframe src="title_player.html"> in title.html file
    created in Camtasia 8.1.

- Replace term: "Construction Space" with "Authoring Space" for
  consistency with type of role used to access it, and action taken there.

- Provide "Manage dependencies" button when editing an HTML file uploaded as
  the syllabus, i.e., user supplied file, instead of the templated syllabus.

- Typo introduced in rev. 1.416.

- Consistent interface.
- HTML files uploaded to course's Supplemental content area can be edited,
  and any dependencies can be replaced (or uploaded if missing).
- "Course View" button provided when "editing" HTML files uploaded
  directly to a course removed; use "Exit Editing" item in Functions instead.

- Managing dependencies and uploading archive files to a course.
  - Support decompression of archive files(e.g., zip files) uploaded to
    Supplemental Content.
  - Support upload of multiple (linked) web pages to a course, where only
    one (containing links to others) is included in a folder (i.e., sequence
    file) -- access allowed to others in course context based on httpref.
  - When listing unused files in a directory in /docs/ or /supplemental/
    exclude files included in httprefs.

- Part of change in lonxml.pm rev 1.529 moved to subroutine:
  &get_courseupload_hierarchy() which returns symb, item title in course
  and path based on folder context for HTML page uploaded directly to course.
- Bug 6448.  "Manage Dependencies" button to open pop-up window to upload,
  replace or delete files associated with an HTML page in a course.

- Customization for MITrelate
  - Backport 1.438.

Bug 6563. Printing: Stylesheets in PDF
This attempts to fix the issue by extending the parser to handle <style> tags.
The new behaviour will not output anything within those tags if the target
is set to tex. Other targets are left unchanged.

- Include dependencies for Camtasia files uploaded directly to a course
  in httpref.

- Backport 1.430. (bug 6317).

- &authorspace() routine now takes an argument: $uri
  so "Construction Space" breadcrumb points at appropriate author space
  for resource/directory being viewed or acted om.
  - current role could be different or ("no role" - i.e., cm), so is only
    used to determine authorspace when $uri is unavailable.

Bug #1320: printing from construction space (except sequences - unclear how that worked)

- Backport 1.434.

- Bug 5047.
  - Display applets where encrypted URL is in operation, at least for cases
    where there is a single archive file, and code and archive are in
    same directory as html file containing applet, object or embed tag.
- Also allows display of Camtasia files with encrypted URL where there
  are dependencies on .js, .swf and .mp4 files.
- Note: the names of the java class file, java archive file, .swf,
  and .mp4 files is visible, unencrypted in the HTML source for the
  web page containing the applet or the movie.

- Backport 1.428, 1.429, 1.432, 1.433.

- Remove outdated comment.

- Remove outdated comment.

IMS Export.
  - Exclude author-specified metadata and instructorcomment when rendering
    problem in a course for export to testbank file ("text" format).
    (MSU requirement for third party customized secure exam platform).
  - Correct letter used to identify which foil in multople-choice is answer.

BZ 6317 - NOTE This commit contains over-extensive debugging output and should not be used in production.
- This commit includes initial work to support the rule="groups" option in
<table> for printing.  Commit because some drastic re-factoring and some data
structure re-engineering was requuired to capture some of the group information.
Anticipate the next commit will support <thead><tbody><tfoot> properly
both with respect to the order in which they appear in the output and
with respect to rules="groups"...if this version does not already do that
correctly...at that time the debug spew will be removed as well.

Finally remove old table code from end_table.

Bug 6317 - Made rules for all but "groups" work correctly.  Have to think
much harder about the data structures needed for row and column groups
(which are currently not processed in printing) to get that last to
work correctly.

- Backport 1.426, 1.427.

- Add "use" for loncommon
- xhtml - missing form action
- Course vs. Community

- Backport 1.426.

- Validation of colspan and rowspan attributes.

- Backport 1.425 (part).

- Backport 1.425 (part).

BZ6378 - Add back support for TeXwidth in <td> tag.

- Replace Apache::File with open() to facilitate use outside Apache/mod_perl
  environment.
- Eliminate unused scalar ($temp_file).

- Comment out debugging.

BZ 6331 - Replace LaTeX::Table usage with lonlatextable which is a simple
subset that is ok in safe space.

- Backport 1.418, 1.419, 1.420, 1.421.

- Backport 1.418, 1.419, 1.420, 1.421.

- Comment out debugging code.

BZ 6317 : Honor the table border.
          Furthermore.. add limited support for rules attribute. This
          allows table borders without cell borders e.g.

- Suppress borders in printout if border="0" attribute set in <table> tag.

Warning that alt-tag is still output, even for encrypted URLs

Removed leftovers of already removed alternative login mode (accessibility).

Add support for <del> tag in tex output, via strikethrough like
output in web mode.

- Backport 1.414, 1.415.

Remove some of the debugging output in 'tex' mode that was used in images as it has \n's that now appear to be stripped and cause issues when used in tables.

- Coding style.
  - Uniform style for location of braces in subroutines in LON-CAPA.

- fixed an issue that caused wrong breadcrumb (and tools) behavior in construction space
- course title is now centered at the top

When editing an HTML document uploaded directly to a course:
  - Do not include CSTR breadcrumbs.
  - Include a "Course View" button to allow return from editing to course context.

Fixed bug 6015:
Menu links (e.g. Publish) work again for HTML pages in CSTR.

CSTR_pageheader includes a lonmenu::constspaceform() call.
Don't call lonmenu::constspaceform() again when CSTR_pageheader is called.

Changes related to modification of LON-CAPA screen header.
Ensure that Construction Space breadcrumbs only appear when in Construction Space
ToDo: other cases

Changes related to modification of LON-CAPA screen header.
Added dynamic link to Construction Space to breadcrumbs

Replaced special problem edit style "LC_edit_problem_header_edit_row" by normal <div> and standard problem divide <hr>

Moved edit_controls to pageheader
(Tidy up CSS needed - work in progress)

Changes related to modification of LON-CAPA screen header.
start_page call:
- Added breadcrumbs
- Added head_subbox and included CSTR standard header

Removed accessiblity related code. These options aren't supported anymore.
(more to do)

Removed outdated no_title option for start_page call.
This option will be new standard (title bar will be removed) and is not needed explicitly anymore.

Prevent double \begin{document} from the cases when that happens.

Always insert the \begin{document}...take out some header dupls

- Bug 5826.
  - Edit button in Construction Space for files with extensions: css, js, or txt.

- Backport 1.400.

- Side effect of change in lonnet.pm 1.886 -- to address bug 5290 (portfolio).
   - HTML parsing code is also used when uploading to DOCS.
   - Need to add httpref entry for any files linked to in uploaded file (not these types of file do not appear in the course map).

Factor out the creation of the LaTeX header code .. hope is to centralize this
across LonCAPA.

Switch to new table code.  It seems to work for all my table problems.

- Remove changes from rev 1.391 (PDF Forms not included in 2.8).

Added/modified POD comments

BZ5548:
 Disable <p> tag in tables to prevent printing errors/hung print jobs.

Subsitution of $m in expressions such as <m>$m$</m>
(inside <translated> block) which resulted in LaTeX errors when generating printouts.
 - update to previous fix (with lonxml.pm rev. 1.487).
 - preferred solution: issue was restricted to perl variables named with a single character (e.g., $m, $a, $L etc.).
   - modify regexp in londefdef.pm to detect these inside<m> tags. Revert lonxml.pm to 1.486.

Localization:
Added missing &mt() call to edit button text

- Backport 1.393

- Bug 5802.
- A side effect of the addition of '\usepackage[T1]{fontenc}' in 1.531 has been the creation of Type 3 (bit map) fonts in the .ps file during printout generation.
  - With some distros (e.g., SuSE) this can prevent creation of the two column format by pstops.
  - It can also result in larger .ps files (e.g., in SuSE, bit maps are generated at 8000 dpi res.)
  - On-screen rendering of the bit maps is poor/fails for Acroread, Evince etc, even though printing may be OK.
- Addition of '\usepackage{lmodern}' allows the use of Type 1 fonts which avoids these issues.

Backport 1.392.

Past tense of "occur" is "occurred" (rr!)
Also added some missing &mt() calls and corrected some other little typos

Adds needed LaTeX-packages to render PDF-formsfields into tex-code, when
user choose to print with PDF-Formfields in print-options.

Properly support files with .bmp extension.

Rendering options (language and math rendering) also available in xml edit

Add [postscript] option to ucs package...helps get a few more
utf-8 glyphs

1. Use utf8x encoding rather than utf8 as that's what the current
   ucs package wants.
2. Ensure that both londefdef and lonprintout are using the same set of
   packages so that UNICODE->UTF-8 translations print properly.
The magic set of packages is:

\usepackage[T1]{fontenc}
\usepackage{ucs}
\usepackage[utf8]{inputenc}
\usepackage{pifont}

1. Fix UTF-8 re-coding in entities.pm
2. add \usepackage{ucs} to latex header in
   lonprintout.pm, londefdef.pm.

1. upate to the new scheme of entity translation.
2. Add the following packages to the header:
\usepackage[T1]{fontenc}  - Some entites only exist in this font.
\usepackage{latexsym}     - Some math entities only live in this pkgs.

BZ4063 - Protect end_table against a </table> tag that has not
corresponding <table>

BZ 2885 - Added
\usepackage[utf8]{inputenc} to LaTeX prefix code to make LaTeX utf8
transparent (or so the LaTeX people claim).

Bug #5652: control printing of URLs and Anchors

Broken image symbols are ugly.

BZ 3058 - Added missing post center correction to the div align=center
processing.

- backport 1.379

- TeXwrap set to none should just emit the image (BUG#5479)

- only show edit controls in CSTR

- get the Edit for .sty to only appear in CSTR space

- adding cstr headers on to .sty file when editing in CSTR

Remove <br/> functionality completely when in a table cell.
It causes problems when used with alignments.

- BUG#5319 implement edit/modifed targets for <meta>

- BUG#5307, can allow deny users with _ in their username

BZ5283 - only put |'s in if borders are on.

- BUG#5301, current ends up being 0 when a user does
  <table>stuff</table> with no <tr> or <td>

- neeed -> need

- BUG#3370,  BUG#1750 - add explict user allowing in the rights file
- convert rights display to use data_table formatting
- some &mt updates

	Use filecategories.tab to read Pictures extensions

	bug 3796: Restrict display to graphic files only.

- enable cssfile for html pages

Allow hyphenation in printouts of uri's at the /'s.
(BZ 4723)

Clean up table width calculations now that I'm a bit less
confused about what's going on here. I think this will allow
me to mark bz 4967 fixed with a clean conscience.

Beginning to understand what happened. It all comes down to a typo
where 'forcedtablewidth' was then checked as 'forcetablewidth'..
but again since percentages get changed to absolute widths.. and it
looks like the intent was to enforce widths one way or the other I think
there's big potential for cleanup... this is just another working
version archived in case I screw up along the way of the  cleanup.

Fix width calculation for tables... not the best fix but at present
I don't understand what the intent was and I think the original author
may have been clever enough to confuse himself too.
- Fix consists of forcing table widths to always believe they are calculating
  percentage of full line width.. since
  o that seems to work.
  o If a TeXwidth="aa%" is specified the absolute width is calculated
    and scaling is evidently done correctly anyway.
- This is hopefully in response to the last gasps of BZ 4967

BZ 4943 - Both <hr /> and <applet> can't be inside <sub> or <sup>
in tex target so turn those off temporarily.  Quoting Major Hoople:
Harumph Fap, Kaff.

Don't subst $ for \ensuremath if there are \verb's in the <m></m> tags.

Remove tentative loop to do end width corrections.

Correct table widths.  The original frame correction was not sufficient.

BZ 4967 - Fix the case given by Felicia in comment #2.
  Spans don't act very well in the case of column widths that are zero
  so if a column min/max comes out to be zero, force the min/max
  to the average min/max for all columns.. appears to work reasonably
  well.

I don't think this is any worse than before.. But still does not
fix the <br /> vs. <tr align="..."> issues.  It tries, when it
won't break things to put a width on the \multirow.

BZ5049  - do <sup> and <sub> using \raisebox and
\scriptsize so that the contents of the tags don't wind up italicized
as they would if done in mathmode.

Allow image alignment with return of env closure.  I was originally
thinking about using this for e.g. bz 4952...but it's maybe useful
anyway.

Factor out image alignment wrapping so that enhancement request
4952 can be done without duplicating code between londefdef.pm
and randomlabel.pm.

- style police

When <a href=yadayada></a> are in problems, output the
href or the name if it does not exist in parens.  This
sort of points out what's happening in bug 4273...
and is maybe useful for people so that if they are working
on printed output but have a computer available they know
what to point their browsers at.

- workaround for latex not liking \par or \vskip inside of \multirow

Typo.

- bug 5096 - add ability to specify no figure wrapping att all (default to wrapfigure though)

Added wrapfigure to the list of wrap modes offered up to the user
for figures in edit rendering.

Bug 5096  - Attempt to put a parbox like alignment back in with some
    robustness.

- lots of \w -> probper regexp replacements

- some style
- eliminate uneeded vars
- LaTReX doesn't like spaces in paths either...

Factor out ' ' -> '_' substitution when doing print
preparation of images.

Need to rethink the whole deal of default size.. and how to do it..
so reverting that ill thought out piece.

queue existing ps/eps files to be copied so that files with ' ' in their names
won't fail printing

Bug 4078 - also get a line break prior to a table when nested in a simple
<sub> or <sup>... this may need a bit more work.. in fact all the specials
for <sub><sup> need to deal with the cases of nested <sub> or <sub><sup> e.g.
and don't at present.  Not yet too sure how to go about getting that
entirely right either.

 Bug 4078 - Implemenet <blockquote> tag in LaTeX as \begin{quote}\end{quote}

Defect 4078 - Honor line break in simple <sup></sup>  Note that
   more complex stuff like <sup><othertag>text <br /></othertag</sup> will,
I think fail to honor the <br /> since it looks like the original
code is only looking for one level out... and to do this really properly
will involve closing all the enclosing tags, inserting the linebreak
and then reopening all the enclosing tags.

- Do table cell alignments using the \multicolumn{1}{|alignspec}{  method.
- Add a correction for spacing at the end of a \center in a table cell.
 this looks like it fixes all the nasty issues with space after centering.
 See bug 3058.

Make \multicolumn produce a {|p{n}|} where n is the sum of the computed
widths of the columns it spans.  Then, since now we have a paragraph mode
in the cell, re-enable the <br /> tag which had been causing infinite loops
within LaTeX/TeX.

- BUG#5004

- latex goes into an infite loop when one does:
\begin{tabular}{c}
\multicolumn{1}{|l|}{\vskip 0 mm B \vskip 0 mm}\\
\end{tabular}

as a workaround, <br /> will have no effect when inside of a <td colspan="..">

- need a spance after \par

Typo.

- BUG#4942 - don't stretch everything to the bottom

- bug#4923, publish HTML file was failing when viewing it (missing forms not included)

- calling init_tth from start_page (effectively)
- reducing dependencies from lontextconvert.pm

- start_page .html files with <frameset>

- .html resources -> start/end_paged

-making this cmmon usage a simple sub call

- backport 1.324

-backport 1.325

- adding webgrade to most tags

- enabling wider support for webgrade

Defect 4701 - use \flushleft \flushright for paragraph
positioning since that appears to interact with wrapfig much
better than generating boxes or parboxes.

- ading 'encyrturl' as an option to the <img> BUG#4712

Accidently left a dump_table call in to commented dump_table

Defect: 4494   Got both row and column spans to work, even when
used in combination with each other.

- need to specify the () to prevent doing perl default argument passing

defect 4520: When printing a <pre></pre> section latex symbol substitution
must be turned off or else output can look funny e.g.
%  -> \%  <  -> \ensuremath{<} etc.
 ----------------------------------------------------------------------

- <m> now shows it errors like <script> does

defect 4540 - scale back width of tables if they won't fit on the printed page
for target tex.

Make the <p> finalization string in tables for latex target:
 \vskip 0pt not 12pt as this is more
consistent with <p> handling in other ways in tables

- forwardport \begin{venter} correntions

- force image to top of the table cell
- was overcorrecting for the center whitespace insert

bug 4545 - If in a table, <p> closing text generated \strut \\ \strut and the
\\ is a bad thing to have in a table cell as it signals end of the table row.
Therefore, if in table, I've substituted an explicit \vskip 12pt to get
the effect I think the user wants.

Get a bit more specific about when wrapfig is allowed:
- If the user requests an image alignment that would normally turn on wrapfig
  inside a table, wrapfig is disallowed since that makes the image size computation
  fail and the figure disappear as it becomes width 0mm. In this case, wrapfig
  is mapped to parpic
- If the user requests an image alignment that would turn on wrapfig outside
  a table, that's ok and allowed to make text wrapping better.`

- backport 1.311

- BUG#4540, default width was taking pixel width and treating it as mm

- backport 1.308 1.309 1.310

- reverting the wrapfigure forcing from 1.287, sems to be causing oddness see BUG#4535

- more correctish fix to BUG#3058

- if both width and TeXwidth were unset, was getting a table of 0mm in width

A bit more help on the column titleing issue.

Make rowspan pretty much work.  There are possible problems with sizing
columns.. and I doubt that a cell with both row and colspan will work or
even that LaTeX can be coerced to do that simply.

Got the data structures needed to get row spanning to work.. Just need to
add \multirow at end_table to finish this off (hopefully).

Bug 4494 - Implement colspan attribute of the <td> tag  note this bug remains
open as rowspan needs implementation too.

Make some furtive first steps at getting table rowspan/colspan attributes
to work.

Now that tables get consumed when included, it's necessary to fix the
loop count on nested table processing so that all nested tables in a
single cell get included.

Tables that were nested in cells of tables were not being 'consumed' when included
into the outer table and hence the wrong table was getting substituted into the
output if multiple tables were nested in a single table.

When tables had subtables with some rows not having all columns,
widths for printing were not calculated correctly because the
code implicitly assumed that that number of columns in the last row was
was the correct max number of columns.   Now explicitly keep track of
the maximum number of columns in the counter_columns element of the
table array so that sizing can include all rows.

- finish off the conversion to allowing style tags get_all_text across tags
- BUG#4428

Progress on nested table... needed to remove some of the post table
scaffolding to get multiple nested tables to look reasonable..still
need to remove some vertical spaceing.

If Data::Dumper is not included, then probably should
also comment out debug_dump_table which depends on it.

- I'd rather not have this included by default

Remove some logging spew I put in to figure out how this all worked.

Defect 3058  ... I believe this fixes the simplest case of this
by removing some extraneous \vspace directives.   I have noticed that
nested tables are totally wrong.   I have some progress on that front as
well, but that needs more work as well.  Will see if I need to make a new
bugreport for that issue.

- BUG#4436

- need to update the argument list

- support <link> more explicitly (currently requires an <allow>)

- rework how extlink is used

- fixing start_img to do the correct thing with allowing to a <img src="" />, this means things without proper <allow /> tags will continue to work

default the wrap mode to texwrap

Sense presence in the table in tex mode and force default img wrapping to a horizontal
one to activate the wrap tex rendering.

Try using wrapfigure env. to get better text wrapping on figures.

Re bug 3954 - ensure that get_eps_image also pulls in the
source image immediately so that <IMG> won't substitute the
ALT text if the source image has not yet been replicated.

- BUG#3605 (comment #5) jsMath wasn't working in html pages

- only munge the file name if we have to do a conversion

defect 4246 : in get_eps_image:  Retain information about the original
file extension so that a single resource can print with images like:
file.gif and file.jpg e.g.  The idea is that instead of both of these
converting to file.eps they'll convert to file.gif.eps and file.jpg.eps
respectively.
  See also r1.84 for ../interface/printout.pl
which must couple to this change as it is what actually generates the .eps
files.

Replace \newline with \\ in <table></endtable> since if the table
 is in a <div>, \endline screws up the alignment generated in tex
mode by the div tag.
Bug 3536

Defect 4199 - First crack at an implementation of <div> in printing target

Fix various issues with <p> that don't have end tags in tex mode.

Bug #3750:
View HTML/XML/... ignored bodytag settings, forced style.
Double DTD entry, because lonxml now produces one itself.

Bug 3948 - Re-do how <p> ends... force </p> at several begin tags that
do new para like things.  This prevents the crashes described in this bug
both for the case described and for other similar cases.  Note that

- adding support for resource author to specify a rendering engine
   <m display="tth"> for instance

Undo the undo of the commit of separation of image sizing and image getting.
Too early in the morning for the first commit

Separate image sizing from eps fetching so that if I have a dynamically '
created eps (e.g. via gnuplot), I can still use the sizing logic.

- updated documentation on resize_image
- stick in newline before starting an <h#> tag (BUG#4077)

- debug doesn't need br is wraps everything in a <pre> </pre> any way

Separate the final image size computation from the initial image size
determination in image_size -> resize_image.  This allows resize_image
to be used in computing final sizing for images created on-the-fly e.g.
with gnuplot

Fix a regression error that caused images to fail to be queued
for conversion to eps... due to operator precedence problems in a test.

- adding 'webgrade' target for bridgetasks

- logic was backwards

- ENV -> env

- &image_size really prefers to get a png/gif etc so it can get a pixel count of the image
- protect against dividing by zero

- try to prevent bobs during image printing (no more divide by zeroes)

- initialize_londefdef taks care of this

lonnet::repcopy() and lonnet::repcopy_userfile() now return strings, with simplified lower-case-only responses, for consistency with other return values from lonnet functions.

Defect 3058 - need to also transmogrify spaces in the filename itself.

Defect 3058: s/ /\_/g in image converstion destination paths.  This is because
LaTeX is not well behaved in the presence of spaces in the graphicspath.

- Allow image sizing to look in construction space if the image does not exist
  in resource space.
- Close the image conversion queue file...else the images would not be
  reliably converted to eps.

lonnet::repcopy() and lonnet::repcopy_userfile() now return strings rather than constants defined in Apache::Constants.  This allows lonnet::repcopy() to be used for cloning in batch course creation run from a command line script.  If Apache::Constants are to be returned by PerlHandlers these should be set in the appropriate handler rather than in subroutines in lonnet called by the handler, based on the string response from lonnet::repcopy().

- jsMath mode works on HW problems in a course
- jsMath works in FDBK

- adding jsMath as a TeX -> HTML option
- adding the ability for a user to choose between jsMath and tth
- setting tth as the default, but I think the default should be based off browser detection, on anything at all modern jsMath is much sexier

- BUG#3902, handle simple case of <sup><m>$\tau$</m></sup>

- trying to make all of the eps image getting gernation etc have a common body of code between <randomlabel>'s bgimg, <img> and <imageresponse>'s <image>

- I think this is more correctish

Bug #3918 for 1.3.3
Curing the symptoms: non-advanced users can never print non-batchmode.

Works better if it does not produce LaTeX errors *and* follows web layout.

- since we are now always specifying the height in the image we need to always correctly calculate the height parameter

- - fix incorrect code for handling encrypturled <param name="cabbase" value="" />

- BUG#3831, objects with relative links in a document that is encrypturled break

Add support for TexWrap to edit target.

- Bug 3602 - attempt to address image alignment.  I don't think there are
any perfect solutions for horizontal alignment, however I've offered the
user a choice between two evils by adding the TeXwrap element to the
<IMG> tag :
   TeXwrap='parbox' attempts to use a parbox and newlines. This
results in very little wrapping but tends to ensure there's nothing on top
of the picture.
   TeXwrap = 'parpic' attempts to use a parpic to get the text to wrap around
the picture better.. however if the paragraph is too short, the next para will
fill into the picture.. and even worse, the parpic seems not to honor the end
of page very well.

parbox is the default because it appears to be the safest at this point.

- editing html pages without the remote control now works

- revertign a change that tried to fix BUG#3297, looks like the book mode also has Latex try to fill each page to the bottom too, which ends up lookig ugly

- BUG#3551 - take out the vskip before an <img> in tex

<dd> wit no <dt> blew up
reformat so it looks a littel better on print out

- <dl> <dt> <dd> didn't
     - print the HTML 4.01 examples
     - allows nesting
     - BUG#3549

- xhtmlizing cleanup

- backport 1.240

- no need to replicate the eps/ps unless we are going to print

- now uses repcopy rather than getfile since the contens aren't needed

Bug 3335 (Printing of simplepages and aboutme doesn't work) is finally fixed. I probably have to add some chunck for the possible replication of *.ps pictures but I want to do this after your (Guy) judgement.

 backport 1.237 and 1.238

- alphabet was misspelled
- count is now always right, added support for more types to <li>

Bug 3388 (Mix and Match printing wrong) is fixed. The source of bug is presence of type="A" attribute directly in <li> tags not in <ol> tag. This is why I was forced to define a new globals: array @Apache:londefdef::alphabit and scalar $Apache::londefdef::alphabit_infdex to trace the current value of index.

Bug 2259 (Printing of simplepages and aboutme doesn't work) is fixed. Any critical remarks are welcomed.

Part of the bug 3335 (Printing of simplepages and aboutme doesn't work) is fixed. I very want to know your (Guy) reaction on this correction because I am not sure that I did this in the reasonable way.

- 3315, add align attribute to <img> tag

- backprot 1.233

Bug 1227 (PDF/print output not correct) - actually about </p> tag doing something reasonable - is fixed.

Bug 3297 (Column headers need less repetition) is fixed. I left all sided headers for 'selected students' printout to avoide situations in which last column of thye student's printout is not marked.

Bug 3228 is fixed. Now you can put randomlabelling problem in the table cell but BE SHURE THAT YOU HAVE CHOSEN CORRECT COORDINATES FOR YOUR RANDOM LABELS POSITIONS.

Bug 3198 (<th>no workie) is fixed.

Bug 3103 (things that print on s10 don't print on data)  is fixed. I changed algorithm (table) to rescale the size of images in the case of unsufficient space. It works for static images only (at this stage). I mean that it could not work for randomlabel problems. But I did not see any example with the whole random label problem in one table cell. Nevertheless I will continue to work with table algorithm to take into account all possible cases.

Bug 3209 (<table> align parameter) is fixed.

Another addition/correction to fix bug 3103.

rt of bug 3103 is fixed. </p> is corrected.

Removed an old garbage logthis message.

Removed logthis.

Part of problems leading to situations described in bug 3103 (things that print on s10 don't print on data) are fixed.

Bug 3057 (using TeXwidth in table doesn't seem to work) is fixed. It's work for the simple table (not nested) or for the most outer table in the case of nested
tables. It's work for the nested table too but the auther has to be responsible (in correct definition of table width) to avoide internal LaTeX conflicts.

Added a few \strut after list environment definition to avoide LaTeX warning
message (error message)  LaTeX Error: There's no line here to end.

Additional correction of <br> tag.

Bug 3035 (vertical space in TeX) is fixed.

Added \strut around \newline at the beginning and end of table to avoid standard LaTeX error 'Can not start a new line'.

Bug 3020 (support for LaTeX packages) is partly solved. I've added the whole AMS package family. Before this I carefully check if there are conflicts between these packages and our old ones. As to the other packages I need to check how they will interact with our current pool. Nevertheless I am ready to add any additional package, of caurse after test.

Handle case of <p> without alignment parameter.

Pictures from aboutme can be printed.

Propath function is used instead of pattern mathing.

Changes to dynamically produce eps counterpart for gif/... picture which was uploaded in the simple page.

Removed centering from <hN> tags in the absence of align attribute (standard HTML - see Dynamic HTML The Definite Reference).

- removal of debug message

- trying to handle image sizes correctly, it should now
    - pick up the image size if it is not specified
    - scale the image if they specify only 1 dimension
    - BUG #2768 is fixed

- apparently the Image:Magick that ships with 7.3 has a broken Ping command, sigh.
  BUG#2864

Changed name of DropEmptyColumns onto TeXDropEmptyColumns.

Bug 2750 (tables are not put on a new line) is fixed.

Table algorithm is changed. There are a lot of important changes:
1. A new algorithm to define the cell width is implemented;
2. A new way to store and use data from cells is used;
3. More elegant but still not quite satisfactory way to define overall table width is used for the nested tables. But if you use TeXwidth attribute in the <table> tag everything looks really nice. At least this gives the authors rather powerfull possibility to predefine LaTeX output at the authoring stage;
4. Additional attribute "DropEmptyColumns" in <table> tag allowing to remove empty columns from table is added. This is really important for the printing of chamical reactions equations.
5. Attribute 'align' can be used both in <tr> and <td> tags and data in these cells can be align independently.
6. LaTeX internal space between columns is changed to the reasonable value - allows save a lot of space inside the table.

All this corrections allows me to close bugs
2129 (printing of tables: justifying column content);
2843 (Equation in the question does not print properly.).

- missed and lonxl::prevent_entity_encode

- trying to be UTF8 transparent

Bug 2751 (<table width="100%"> is ignored when printing) is fixed.

Bug 2411 (<sub><m></m></sub> doesn't work) is fixed. \ensuremath{} is implemented which allows to use nested math environments in subscripts and supersscripts.

- Added &Apache::lonxml::info, for display informational message (saved changes etc.), messages are suppressed when not in CSTR
- Tryin to address BUG#2305, we were emitting text before the <html> tag (error messages etc.)
   - now exists &Apache::lonxml::message_location() which is used o mark where messages should go
   - &Apache::lonxml::add_messages() which puts the info/warning/error message into the page (And should be called right before display the results of the parse)

- Homework Edit,EditXML, and display modes converted to use this mechanism
- HTML display and Edit converted to use this

Added keyboard shortcuts to construction space editing.

- HTML is case insensitive

Bug 2749 is fixed. Now you can use attribute allign="center|left|right" in <p>
tag. But for attribute values "left|right" there are severe limitations: you can not put <br /> tag inside paragraph (this comes from LaTeX limitations).

Another step in cleanup of <img>.

- Whoops

First attempt of cleanup of <img> tag.

- consolidated tth init sections
- course parameter for tth for setting tth parameters

- Undoing 1.190, to fix BUG#2562 which reopens BUG#1894
- sigh

Bug 2521 (The eps conversion in construction space does not appear to work) is fixed. See cgi script printout.pl too.

- BUG#2383, make <m> tag work in analyze mode

- BUG#1894, now redfing <m> should work fine, I have also tested putting some odd things inside the <m> tag including the things that caused the original report thacaused the generaation of get_all_text_unbalanced, it seems it is no longer needed.

- makes things not break if and img tag with no src= is in there (make it so templates can include the image tag by default without having the web through up broken image links and print go wacky)

- londefdef global reinit paranoia

- works correctly 100% of the time now. :-)

- most of BUG#1473

- BUG#1941, <title> and <h1> generate metadata again

Added sub to calculate width of table cell  more accurately.

Bug 2260 (The table runneth over.) is fixed - at least partly. I can not see all
possible situations with sub/superscripts ahead so I work with this more or lesspermanantly.

Bug 2287 (automatic eps generation needs to preserves paths) is partly corrected - it's done for static images. Further neccessary steps are 1) implement the same for randomlabel. problems; 2) implement additional parameter to do previous item for a few students at the same time; 3) make a test for a few more situations.

Implemented <secect> and <option> tags.

- BUG#2280 resources attempt to register whil in CSTR

1. <nobr> tag is implemented for target="tex";
2. Misprint is fixed (<malticol> -> <multicol>.

- BUG#2254, <m> should not be run::evaluate afterwards

- why not uset the ALT tag when printing a page with an Applet?

Chenges to remove previous ones and to implement the statement "There is JAVA applet here." .

Changes to print True-False htm page fron W.Benenson course. I want to stress that these changes may be not very good (even stupid) but I have to start with something more or less workable. Continuation will follow.

New (very updated) version for set of description list tags. It now works in the case where <dd> tag is omitted (Guy's critical note). I want to generalize this set of tags to take into account nested description lists - this is why I defined a few globals. Latter on they will go in one global array as in the case of table environment.

Better version of definition list which allows to generalization in the future (if neccessary for the different combinations of tags).

Bug 2230 (<dl><dt><center>hi</center></dt></dl>) is fixed. In addition you can omit </dt> tag which is optional in HTML. But this bug has originated a lot of other questions - we can have far more complicated situations with different combinations of HTML tags in definition list. Continue to work with this but close 2230.

Added a line at the very end of xml/html documents (looks better if you print a sequence).

- fixing my backport of 1.166

- backport 1.166 1.167

- backport 1.170

- <problem><body> never really worked before, and now it won;t gerenate to sets of menubuttons

- backport 1.169

- brown paper bag fix

- backport 1.168

- no comment

Bug 2082 is fixed. The content of the bug message was almost completely wrong but the bug was a real. The table exceeded the column width because I wanted to have a rather smart algorithm for calculating the width of the cell. As a result I made a very stupid assumption how to calculate the width of the last cell in the table. Now I simplified the algorithm and averything seems is O'K.

The length of the table cell can be correctly calculated for the case when somebody uses <br /> in this cell. This makes table looking more pretty.

- backport 1.164 1.165

- this version actually compiles. *grin*

- endrirection could get called when no startredirection had been

<pre> tag can be correctly rendered for 'tex' target.

Added <xmp> tag to support older versions of HTML (HTML<4).

Index section is printable for the separate resource. Continue to work.

You can use unbalanced <td> tag (widthout optional </td>) even at the very end of the raw: <tr><td>.....</tr>. It works fine though the implementation looks crude.

Now it's possible to use unbalanced <td> tag (av=ccording standard HTML </td> tag is optional) except at the end of raw. Continue to work with.

Corrected <p> tag according Guy's note.

Bug 1191 (<b><p>...</p></b> does not workin LaTeX) is fixed.

bug 1325 (request for default image scaling) is fixed. If the size of image exceeds the width of text it changes to 95% of text width.

Accessibility features work as advertised.

Bug #1943: <meta> did not work as advertised.

Added switch -  batchmode on/batchmode off.

<dt> tag without </dt> is allowed now (this is standard HTML).

Changes in <meta> tag toprint standard HTML documents.

Added longtable environment to print a huge tables (a lot of info inside one particular cell).

Corrections to print links (the source of this corrections - particular document res/msu/bio/bswelcomeLON-CAPA.html). This html page is a perfect example how to create bad html and absolutely unreasonably complicated document. I have still to work with this html page - the content of this page is embedded into one cell of one column page and LaTeX has a severe limitations for such huge tables.

Very important changes in <td> tag - I earlier never seen really complicated tables(such as in bio course) so I did the simplest calculations for the cell width
and incorrectly cleaned up the content of the cell. Now it has to work more reasonably.

Added test for <dt> tag before <dd> in the definition list (actually I check for <dd> after <dl>) for target="tex" with additional \item[] in case of absence of <dt> tag.

Corrected <a> and <li> tags.

- commenting out batchmode for now (notready for 0.99.3)

1. Cleanup done - latexsource target is removed.
2. <p> tag now does not require ending tag </p>.

Final version (at least for today) which prints fine nested tables. My undef function works really well. The reason why Guy could not print nested tables was mystupid error - I've forgotten to remove a chunk which I added only for the testing purpose. Sorry for this and thanks to Guy for the notoce.

Removed undefined table array.

Bug found by Ed (strange tables printing for the printing of sequence) is fixed. I've just undefined array with tables.

LaTeX parsing is changed to batchmode. It allows to automatically correct a simple LaTeX errors (such as typos for example <m>$a^2</m> instead <m>$a^2$</m>) but for more complicated situations it;s more unpredictable.

Very important change in the calculation of the table width. Till now I used only integer number (in mm) and the use of any fraction lead to unpredictable result. After this correction the final output for the tables has to be better. Nevertheless I stillhave to find the better way for taking into account the "internal" size of any table's element (any vertical line for the separation of columns -no matter real or not shown).

Bug #1554: <allow> mechanism did not work anymore, because environment
httpref entry was full file location ("/home/httpd/html/...").

Corrected <big> tag for tex target.

Changes in <pre> tag - LaTeX does not like verb environment inside parbox.

Added target="tex" into <meta> tag to avoide printing content of imported metadata files in CBI documents.

Added <hideweboutput> tag to hide any information between <hideweboutput> and </hideweboutput>. This is used for physnet.sty style file.

Bug 1193: frameset needs to not only include the load and unload Javascript
routines, but also actually call them.

 Another correction for the calculation of the cell's width. It is important for the cases where you have real number (not integer) for the width of the object in the cell (it frequently happens when the size of the picture is determined dynamically and not specified in TeXwidth attribute).

 Fixed me stupid error to calculate the width of the table. This probably will fix Guy's bug but I have to check more.

Changed <th> tag. Now it's almost identical to <td> tag but prints in bold. Additional work may be necessary to resolve some conflicts with the content environments inside of the "internals" of <th> tag.

 The second limitation (only one of nested table in the cell of parent table) is removed completely - now you can put as many tables as you wish. More over, the depth of nesting is arbitrary (you just have to care about how it will looks like on the paper). By the way, I've forgotten to mention that I completely changed algorithm to determine the width of each cell and the table itself.

 Nested tables are supported but with two limitations:
1. The width (TeXwidth) of the cell where you want to put your "internal" (nested) table has to be specified;
2. Only one nested table has to be in one parent table's cell.
The second limitation can be removed more or less easily and I am working on this. As to the first limitation - if I remove it table in the finel hard copy will looks crude.

 Better variant but still needs some work to put nested tables in the correct place in the parent table.

 Temporary submition with changes for <table>. It supports the reasonable definition of the cell' size. Needs adjustment to support nested tables. By the way Guy, to which maximum depth do I have to support nested tables?

1. Added atribute align in <hN> tags.
2. Added attribute TeXsize in all <hN> tags to customize size in the LaTeX output. Possible values of TeXsize coincide with standard LaTeX ones (for example "Large", "small", ...).
3. Added atribute type in <ol> tag. Now all standard possible types of html attributes are supported: 1, A, a, I, i. In addition they are work rather well in nested lists (by default up to depth=4, as in LaTeX itself).
4. Added atribute type to <ul> tag. Now all standard possible types of html attributes are supported: disk, circle, and square (instead square I've used diamond in the LaTeX output - it looks better and supported more easily). Again, nested structures are supported up to standard LaTeX depth=4. More correctly, you can use as many nested structures as you want but system will care automatically (without definition of type attribute) only about 4 nested structures.

Completely rewritten latex output code for <hr> tag. New parameter TeXwidth is introduced to specify the lengh of the line. Align parameter is now supported .

Incorporate "role" into custom access rights