On Sun, Jan 16, 2022 at 08:07:42AM -0500, Thomas Dickey wrote: > On Sun, Jan 16, 2022 at 07:58:07AM -0500, Thomas Dickey wrote: > > On Sun, Jan 16, 2022 at 08:03:14AM +0100, Andreas Metzler wrote: > ... > > > * Is the double compilation/binary necessary? - Is /usr/bin/byacc2 > > > > I thought it would be the safest approach. I've made some effort to keep > > the two compatible, but sooner or later will get some bug report related > > to their differences. Debian's the usual place for that sort of thing. > > fwiw, the reference files in test/*yacc show that backtracking doesn't > simply _add_ definitions: > > 155 files changed, 53852 insertions(+), 1785 deletions(-) > > (presumably reviewing those deletions would tell me whether two binaries > are still needed). reviewing one of those (e.g., a "calc" test-case which doesn't rely upon the backtracking features, and looking at the ".c" file), it seems to be properly ifdef'd so that the extra text is activated when the -B option is supported/used. There are a few spots where the code is reorganized to integrate the two flavors. There's one functional difference: The debugging output in the btyacc flavor goes to stderr, while the byacc flavor goes to stdout. (The manual page doesn't mention this - nor does it mention that -h goes to stderr) -- added a to-do... -- Thomas E. Dickey <dickey@invisible-island.net> https://invisible-island.net ftp://ftp.invisible-island.net
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