~vcs-imports/gawk/master

   Copyright (C) 2019, 2020, 2021 Free Software Foundation, Inc.

   Copying and distribution of this file, with or without modification,

   are permitted in any medium without royalty provided the copyright

   notice and this notice are preserved.

Changes from 5.1.0 to 5.1.1

---------------------------

1. Infrastructure upgrades: Bison 3.7.1, Gettext 0.20.2, Automake 1.16.3.

2. asort and asorti now allow FUNCTAB and SYMTAB as the first argument if a

   second destination array is supplied. Similarly, using either array as

   the second argument is now a fatal error. Additionally, using either

   array as the destination for split(), match(), etc. also causes a

   fatal error.

3. The new -I/--trace option prints a trace of the byte codes as they

   are executed.

4. A number of subtle bugs relating to MPFR mode that caused differences

   between regular operation and MPFR mode have been fixed.

5. The API now handles MPFR/GMP values slightly differently, requiring

   different memory management for those values. See the manual for the

   details if you have an extension using those values.  As a result,

   the minor version was incremented.

6. $0 and the fields are now cleared before starting a BEGINFILE rule.

7. The duplication of m4 and build-aux directories between the main

   directory and the extension directory has been removed. This

   simplifies the distribution.

8. The test suite has been improved, making it easier to run the entire

   suite with -M. Use `GAWK_TEST_ARGS=-M make check' to do so.

9. Profiling and pretty-printing output has been modified slightly so

   that functions are presented in a reasonable order with respect

   to the namespaces that contain them.

10. Several example programs in the manual have been updated to their

    modern POSIX equivalents.

11. Handling of Infinity and NaN values has been improved.

12. There has been a general tightening up of the use of const and

    of types.

13. The "no effect" lint warnings have been fixed up and now behave

    more sanely.

14. There have been numerous minor code cleanups and bug fixes. See the

    ChangeLog for details.

Changes from 5.0.1 to 5.1.0

---------------------------

1. The major version of the API is bumped to 3, something that should

   have happened at the 5.0.0 release but didn't.

2. A number of memory leak issues have been fixed.

3. Infrastructure upgrades: Bison 3.5.4, Texinfo 6.7, Gettext 0.20.1,

   Automake 1.16.2.

4. The indexing in the manual has been thoroughly revised, in particular

   making use of the facilities in Texinfo 6.7.  That version (or newer)

   must be used to format the manual.

5. MSYS2 is now supported out-of-the-box by configure.

6. Several bugs have been fixed.  See the ChangeLog for details.

Changes from 5.0.0 to 5.0.1

---------------------------

1. A number of ChangeLog.1 files that were left out of the distribution

   have been restored.

2. Multiple syntax errors should no longer be able to cause a core dump.

3. Sandbox mode now disallows assigning new filename values in ARGV that

   were not there when gawk was invoked.

4. There are many small documentation improvements in the manual.

5. The new argument "no-ext" to --lint disables ``XXX is a gawk extension''

   lint warnings.

6. Infrastructure upgrades: Bison 3.4.

7. A number of bugs, some of them quite significant, have been fixed.

   See the ChangeLog for details.

Changes from 4.2.1 to 5.0.0

---------------------------

1. Support for the POSIX standard %a and %A printf formats has been added.

2. The test infrastructure has been greatly improved, simplifying the

   contents of test/Makefile.am and making it possible to generate

   pc/Makefile.tst from test/Makefile.in.

3. The regex routines have been replaced with those from GNULIB, allowing

   me to stop carrying forward decades of changes against the original

   ones from GLIBC.

4. Infrastructure upgrades: Bison 3.3, Automake 1.16.1, Gettext 0.19.8.1,

   makeinfo 6.5.

5. The undocumented configure option and code that enabled the use of

   non-English "letters" in identifiers is now gone.

6. The `--with-whiny-user-strftime' configuration option is now gone.

7. The code now makes some stronger assumptions about a C99 environment.

8. PROCINFO["platform"] yields a string indicating the platform for

   which gawk was compiled.

9. Writing to elements of SYMTAB that are not variable names now

   causes a fatal error. THIS CHANGES BEHAVIOR.

10. Comment handling in the pretty-printer has been reworked almost completely

    from scratch. As a result, comments in many corner cases that were

    previously lost are now included in the formatted output.

11. Namespaces have been implemented! See the manual.  One consequence of this

    is that files included with -i, read with -f, and command line program

    segments must all be self-contained syntactic units. E.g., you can no

    longer do something like this:

   	gawk -e 'BEGIN {' -e 'print "hello" }'

12. Gawk now uses the locale settings for ignoring case in single byte

    locales, instead of hardwiring in Latin-1.

13. A number of bugs, some of them quite significant, have been fixed.

    See the ChangeLog for details.