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buggy configure completion



I've attached the "configure --help" output for MPFR.
I'm using:

  zstyle ':completion:*' format 'Completing %d'

With zsh 5.2, I get the following, which doesn't make sense:

zira:~/software/mpfr> ./configure --enable-decimal-float[Tab]
Completing option
--enable-decimal-float  -- build conversion functions from/to decimal floats
--enable-decimal-float  -- explicitly disable decimal floats support

One has from the "configure --help" output:

  --disable-decimal-float explicitly disable decimal floats support
  --enable-decimal-float  build conversion functions from/to decimal floats
                          [default=autodetect]

And there is an inconsistency:

zira:~/software/mpfr> ./configure --enable-log[Tab]

gives

./configure --enable-logging []

where [] is the cursor. But

zira:~/software/mpfr> ./configure --enable-gmp-int[Tab]

gives:

zira:~/software/mpfr> ./configure --enable-gmp-internals=[]

and

zira:~/software/mpfr> ./configure --enable-gmp-internals --[Tab]

gives:

zira:~/software/mpfr> ./configure --enable-gmp-internals --[]
Completing --enable-gmp-internals

instead of completing a new option.

-- 
Vincent Lefèvre <vincent@xxxxxxxxxx> - Web: <https://www.vinc17.net/>
100% accessible validated (X)HTML - Blog: <https://www.vinc17.net/blog/>
Work: CR INRIA - computer arithmetic / AriC project (LIP, ENS-Lyon)
`configure' configures MPFR 4.0.0-dev to adapt to many kinds of systems.

Usage: ./configure [OPTION]... [VAR=VALUE]...

To assign environment variables (e.g., CC, CFLAGS...), specify them as
VAR=VALUE.  See below for descriptions of some of the useful variables.

Defaults for the options are specified in brackets.

Configuration:
  -h, --help              display this help and exit
      --help=short        display options specific to this package
      --help=recursive    display the short help of all the included packages
  -V, --version           display version information and exit
  -q, --quiet, --silent   do not print `checking ...' messages
      --cache-file=FILE   cache test results in FILE [disabled]
  -C, --config-cache      alias for `--cache-file=config.cache'
  -n, --no-create         do not create output files
      --srcdir=DIR        find the sources in DIR [configure dir or `..']

Installation directories:
  --prefix=PREFIX         install architecture-independent files in PREFIX
                          [/usr/local]
  --exec-prefix=EPREFIX   install architecture-dependent files in EPREFIX
                          [PREFIX]

By default, `make install' will install all the files in
`/usr/local/bin', `/usr/local/lib' etc.  You can specify
an installation prefix other than `/usr/local' using `--prefix',
for instance `--prefix=$HOME'.

For better control, use the options below.

Fine tuning of the installation directories:
  --bindir=DIR            user executables [EPREFIX/bin]
  --sbindir=DIR           system admin executables [EPREFIX/sbin]
  --libexecdir=DIR        program executables [EPREFIX/libexec]
  --sysconfdir=DIR        read-only single-machine data [PREFIX/etc]
  --sharedstatedir=DIR    modifiable architecture-independent data [PREFIX/com]
  --localstatedir=DIR     modifiable single-machine data [PREFIX/var]
  --runstatedir=DIR       modifiable per-process data [LOCALSTATEDIR/run]
  --libdir=DIR            object code libraries [EPREFIX/lib]
  --includedir=DIR        C header files [PREFIX/include]
  --oldincludedir=DIR     C header files for non-gcc [/usr/include]
  --datarootdir=DIR       read-only arch.-independent data root [PREFIX/share]
  --datadir=DIR           read-only architecture-independent data [DATAROOTDIR]
  --infodir=DIR           info documentation [DATAROOTDIR/info]
  --localedir=DIR         locale-dependent data [DATAROOTDIR/locale]
  --mandir=DIR            man documentation [DATAROOTDIR/man]
  --docdir=DIR            documentation root [DATAROOTDIR/doc/mpfr]
  --htmldir=DIR           html documentation [DOCDIR]
  --dvidir=DIR            dvi documentation [DOCDIR]
  --pdfdir=DIR            pdf documentation [DOCDIR]
  --psdir=DIR             ps documentation [DOCDIR]

Program names:
  --program-prefix=PREFIX            prepend PREFIX to installed program names
  --program-suffix=SUFFIX            append SUFFIX to installed program names
  --program-transform-name=PROGRAM   run sed PROGRAM on installed program names

System types:
  --build=BUILD     configure for building on BUILD [guessed]
  --host=HOST       cross-compile to build programs to run on HOST [BUILD]

Optional Features:
  --disable-option-checking  ignore unrecognized --enable/--with options
  --disable-FEATURE       do not include FEATURE (same as --enable-FEATURE=no)
  --enable-FEATURE[=ARG]  include FEATURE [ARG=yes]
  --enable-silent-rules   less verbose build output (undo: "make V=1")
  --disable-silent-rules  verbose build output (undo: "make V=0")
  --disable-maintainer-mode
                          disable make rules and dependencies not useful (and
                          sometimes confusing) to the casual installer
  --enable-gmp-internals  enable use of GMP undocumented functions [default=no]
  --enable-assert         enable ASSERT checking [default=no]
  --enable-logging        enable MPFR logging (the system must support it)
                          [default=no]
  --disable-thread-safe   explicitly disable TLS support
  --enable-thread-safe    build MPFR as thread safe, i.e. with TLS support
                          (the system must support it) [default=autodetect]
  --enable-shared-cache   enable use of caches shared by all threads,
                          for all MPFR constants.  It usually makes MPFR
                          dependent on PTHREAD [default=no]
  --enable-warnings       allow MPFR to output warnings to stderr [default=no]
  --enable-tests-timeout=NUM
                          [for developers] enable timeout for test programs
                          (NUM seconds, <= 9999) [default=no]; if this is
                          enabled, the environment variable $MPFR_TESTS_TIMEOUT
                          overrides NUM (0: no timeout)
  --enable-tune-for-coverage
                          [for developers] tune MPFR for coverage tests
  --enable-dependency-tracking
                          do not reject slow dependency extractors
  --disable-dependency-tracking
                          speeds up one-time build
  --enable-shared[=PKGS]  build shared libraries [default=yes]
  --enable-static[=PKGS]  build static libraries [default=yes]
  --enable-fast-install[=PKGS]
                          optimize for fast installation [default=yes]
  --disable-libtool-lock  avoid locking (might break parallel builds)
  --disable-decimal-float explicitly disable decimal floats support
  --enable-decimal-float  build conversion functions from/to decimal floats
                          [default=autodetect]
  --disable-float128      explicitly disable __float128 support
  --enable-float128       build conversion functions from/to __float128
                          [default=autodetect]
  --enable-mini-gmp       build MPFR with mini-gmp (experimental) [default=no]
  --enable-debug-prediction
                          [for developers] enable debug of branch prediction
                          (for x86 and x86-64 with GCC, static libs)
  --enable-lto            build MPFR with link-time-optimization
                          (experimental) [default: no]

Optional Packages:
  --with-PACKAGE[=ARG]    use PACKAGE [ARG=yes]
  --without-PACKAGE       do not use PACKAGE (same as --with-PACKAGE=no)
  --with-gmp-include=DIR  GMP include directory
  --with-gmp-lib=DIR      GMP lib directory
  --with-gmp=DIR          GMP install directory
  --with-gmp-build=DIR    GMP build directory (please read INSTALL file)
  --with-mulhigh-size=NUM internal threshold table for mulhigh
  --with-pic[=PKGS]       try to use only PIC/non-PIC objects [default=use
                          both]
  --with-aix-soname=aix|svr4|both
                          shared library versioning (aka "SONAME") variant to
                          provide on AIX, [default=aix].
  --with-gnu-ld           assume the C compiler uses GNU ld [default=no]
  --with-sysroot[=DIR]    Search for dependent libraries within DIR (or the
                          compiler's sysroot if not specified).

Some influential environment variables:
  CC          C compiler command
  CFLAGS      C compiler flags
  LDFLAGS     linker flags, e.g. -L<lib dir> if you have libraries in a
              nonstandard directory <lib dir>
  LIBS        libraries to pass to the linker, e.g. -l<library>
  CPPFLAGS    (Objective) C/C++ preprocessor flags, e.g. -I<include dir> if
              you have headers in a nonstandard directory <include dir>
  CPP         C preprocessor
  LT_SYS_LIBRARY_PATH
              User-defined run-time library search path.

Use these variables to override the choices made by `configure' or to help
it to find libraries and programs with nonstandard names/locations.

Report bugs to the package provider.


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