Log Message:
Updated xterm to 330.

Patch #330 - 2017/06/20

  • updates for ReGIS (Ross Combs):
      □ remove redundant text command error check which broke T(B) and T(E).
      □ retain the loading alphabet number across multiple “L” \ 
commands.
      □ add S(T) delay handler.
      □ fix some color handling error messages.
      □ add stubbed-out macrograph handling.
      □ use fragment_remaining() and fragment_consumed() instead of manually
        checking position / length in various places.
      □ rename some local variables in string / extent / option parsing
      □ wrap some long lines.
      □ move macrograph command handling out of the top-level.
  • add a summary of the italic fonts loaded to -report-fonts option.
  • modify the font-lookup for italics to allow for “-i-” if no \ 
match is found
    with slant “-o-” (prompted by patch by Ben Wong).
  • change default values for mkSamplePass and mkSampleSize to reflect
    generally-improved locale support in various operating systems (FreeBSD #
    219800).
  • modify wcwidth.c to return -1 for non-Unicode values, and adjust a couple
    of blocks to better match assumptions about ambiguous-width characters in
    other implementations. Also modify wcwidth.c to support configurable
    soft-hyphen, so there is no drawback to using this version rather than a
    system wcwidth.
  • amend change made in patch #328 for cursor-visibility to handle case where
    an application is updating the reverse-video state (FreeBSD #219800).
  • update tables of combining and ambiguous-width characters in wcwidth.c
    based on Unicode 10.0.0.
  • build-fix for --enable-sixel-graphics without --enable-regis-graphics
    (reports by Sven Joachim, FreeBSD #219945).