61 lines
2.0 KiB
Plaintext
61 lines
2.0 KiB
Plaintext
This is grn from the Berkeley ditroff distribution. It has no
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AT&T code and is therefore freely distributable.
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Tim Theisen <tim@cs.wisc.edu>
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=====================================================================
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This is the modified code for the groff. It uses the different
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devxxx format that is ascii rather than binary as in the
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Berkeley distribution. Since groff does not have the \Ds option
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for line drawing (dotted, dashed, etc.), this version includes
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the routines for drawing curves and arcs, so it does not use the
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\D~, \Da nor \Dc. Although also included in here is a routine
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for drawing the optional gremlin style curves, it is not used
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because the gremlin editor uses the conventional spline
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algorithm. The Berkeley grn has the choice of different
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stipples. Here, only different shades of gray will be painted
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depending on the gremlin file. It is possible to upgrade this at
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a later time. (Daniel Senderowicz <daniel@synchrods.com> 12/28/99)
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=====================================================================
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It has been further modified by Werner Lemberg <wl@gnu.org> to fit
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better into the groff package.
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. Replaced Makefile with Makefile.sub.
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. Removed dev.h since it is unused.
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. Renamed grn.1 to grn.man; this man page has been extensively
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revised.
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. Used error() and fatal() from libgroff for all source files.
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. Renamed *.c to *.cc; updates as needed for C++ (prototypes, proper
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casts, standard header files etc). Heavy formatting.
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. main.cc:
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Using groff's default values instead of DEVDIR, DEFAULTDEV, PRINTER,
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TYPESETTER, and GREMLIB.
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`res' is now an integer.
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Added `-C' command flag (for compatibility mode) as with other
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preprocessors.
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Added `-F' and `-v' option (similar to troff).
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Renamed `-L' option to `-M' for consistence.
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Removed `-P' option.
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Using font::load_desc() for scanning DESC files.
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Removed SYSV-specific code.
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Using macro_path.open_file() for getting gremlin graphic files.
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Added usage().
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