htmlfix - Fixup HTML markup code

        Ralf S. Engelschall
        rse@engelschall.com
        www.engelschall.com

        Denis Barbier
        barbier@engelschall.com

EN Tools                                           2020-11-29                                         HTMLFIX(1)

       The htmlfix program reads inputfile or from "stdin" and performs the following actions (name of each
       fixup is within parentheses):

       (imgsize) : AddingWIDTHandHEIGHTattributestoIMGtags
           For  all  "IMG"  tags  which  don't  already  have both "WIDTH" and "HEIGHT" attributes (matched case
           insensitive), the size of the image (taken from the "SRC" attribute) is determined  and  the  missing
           ``"width=X"''  and/or  ``"height=Y"'' is added to the list of attributes. The intention is to speedup
           the layouting of the final webpage.

           Don't intermix this with a size checker: htmlfix will only add missing  width/height  attributes  and
           don't  adjust  ones  with  wrong  dimensions.  This is because else the user wouln't be able to scale
           images (used a lot by webdesigners via 1pt dot-images).

           There is a special case: When the "WIDTH" or "HEIGHT" attribute already exists and  has  a  value  of
           ``"*"''  this  asterisk  is  replaced by the physical value instead of appending a new attribute. Use
           when you want the attributes at a certain position, i.e. use this variant as a placeholder.

           HTMLfix supports one additionl feature in conjunction with "WIDTH" and "HEIGHT":  "SCALE="factor  and
           "SCALE="percent"%".  This  can  be  used  to scale the given or determined width and height values by
           multiplying with factor or multiplying with percent/100.

       (imgalt) : AddingALTattributetoIMGtags
           For all "IMG" tags which don't already have a "ALT" tag an "ALT=""" attribute is added. The intention
           is to both make HTML checkers like weblint(1) happy and to demystify the final  webpage  for  lynx(1)
           users.

       (summary) : AddingSUMMARYattributetoTABLEtags
           This  attribute  helps  non-visual rendering of tables by adding a hint on its contents, and it makes
           tidy(1) quiet.

       (center) : ChangingproprietaryCENTERtagtostandardDIVtag
           All proprietary (Netscape) "CENTER" tags are replaced by the HTML 3.2  conforming  construct  ``"<DIV
           ALIGN=CENTER>"''.

       (space) : Fixtrailingspacesintags
           Appendix  C  of the XHTML Specification recommends putting a space before closing simple tags to help
           rendering by old browsers.  This space is automatically added when this fixup is used.  On the  other
           hand, all spaces before a right-angle bracker are suppressed.

       (quotes) : Addingmissingquotesforattributes
           All  attributes  of  the form ``"...=xyz"'' are replaced by ``"...="xyz""''.  Furthermore all (color)
           attributes of the form ``"...="XXYYZZ""'' (XX,YY,ZZ elements of  set  {0,..,9,a,..,f}  are  fixed  to
           ``"...="#XXYYZZ""''.

       (indent) : Indentingparagraphs
           Paragraphs  enclosed  in  "<indent  [num=N]  [size=S]>"..."</indent>"  containers are indented by N*S
           spaces.  When N=0 then the whitespace block in front of the paragraph is removed.   Default  is  a  4
           space indentation (N=1, S=4).

       (comment) : Out-commentingtags
           Sometimes  it  is useful to temporarily out-comment a tag instead of completely removing it. This can
           be done by just adding a sharp (``"#"'') character directly to the end of the tagname. The result  is
           that  the  complete  tag  is  commented  out.  For container-tags you have to comment out the end-tag
           explicitly, too. Example: ``<"a# href="..."">''.

       (tagcase) : Markup-codecase-conversion
           Some people like their HTML markup code either to be all uppercase or all lowercase. This  tag  case-
           conversion  is  supported  by  the  internal  "<tagconv  case=...>"..."</tagconv>" container tag from
           HTMLfix. Use "case=upper" to  translate  the  HTML  tags  in  its  body  to  uppercase  (default)  or
           "case=lower" to translate them to lowercase.

       htmlfix - Fixup HTML markup code

-ooutputfile
           This  redirects  the  output  to  outputfile.  Usually the output will be send to "stdout" if no such
           option is specified or outputfile is ""-"".

       -Ffixes
           This option specifies which specifix fixups are performed.  Its argument is a comma separated list of
           fixup names, and by default all fixups are performed.

       -Sfixes
           This option does the inverse job, it skips specified fixups.

       -v  This sets verbose mode where some processing information will be given on the console.

htmlfix [-ooutputfile] [-Ffixes] [-Sfixes] [-v] [inputfile]