Werner Almesberger b8f6545821 cameo: added command "append", improved file output error checking ...

- README: added description of "append"
- lang.l, lang.y: added command "append"
- gnuplot.h, gnuplot.c (gnuplot_append): append gnuplot paths to an
  existing file
- gnuplot.c (gnuplot_do_write): if writing to standard output, at least
  check that fflush() works at the end

2010-12-15 06:27:15 -03:00

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