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Paul Eggert authored
This incorporates: 2017-04-08 getopt: prefer - to _ in new file names 2017-04-08 getopt: port recent getopt changes to macOS * .gitignore: Add lib/getopt-cdefs.h. * lib/getopt-cdefs.in.h: Rename from lib/getopt_cdefs.in.h. * lib/getopt-core.h: Rename from lib/getopt_core.h. * lib/getopt-ext.h: Rename from lib/getopt_ext.h. * lib/getopt-pfx-core.h: Rename from lib/getopt_pfx_core.h. * lib/getopt-pfx-ext.h: Rename from lib/getopt_pfx_ext.h. * lib/getopt.in.h, lib/unistd.in.h, m4/getopt.m4: Copy from Gnulib. * lib/gnulib.mk.in, m4/gnulib-comp.m4: Regenerate.
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