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- GNU m4 NEWS - User visible changes.
- Copyright (C) 1992 Free Software Foundation, Inc.
- Francois Pinard <pinard@iro.umontreal.ca>, 1992.
-
- Version 1.1 - November 1993, by Franc,ois Pinard
- ================================================
-
- Changes which might affect existing GNU m4 scripts
- --------------------------------------------------
-
- * `-V' option has been removed, use `--version' instead. `--version'
- writes on standard output instead of standard error, and inhibits any
- script execution.
-
- * `--no-gnu-extensions' has been renamed `--traditional'.
-
- * In `eval', `^' used to indicate exponentiation, use `**' instead.
-
- * The automatic undiversion which takes place at end of all input is
- forced into the main output stream.
-
- Changes which are unlikely to affect existing scripts
- -----------------------------------------------------
-
- * `--help' prints an usage summary on standard output. Script
- execution is then inhibited.
-
- * `--prefix-builtins' (-P) prefixes all builtin macros by `m4_'.
-
- * Most builtin macros for which arguments are mandatory, called
- without any arguments, are no more recognized as builtin macros: they
- are consequently copied verbatim to the output stream.
-
- * `define' and `pushdef' are usable with only one argument, they give
- this argument an empty definition.
-
- * `eval' new operators for binary representation handling: `^' for
- exclusive-or, `~' for the bitwise negation, `<<' and `>>' for shifts.
-
- * `eval' recognizes the notation 0bDIGITS for binary numbers and
- the notation 0rRADIX:DIGITS for numbers in any radix from 1 to 36.
-
- Version 1.0.3 - December 1992, by Franc,ois Pinard
- ==================================================
-
- Changes for the user
- --------------------
-
- * `dnl' outputs a diagnostic if immediately followed by `('. Usually,
- `dnl' is followed by newline or whitespace.
-
- * `ifelse' accepts without complaining the common idiom of having only
- one argument. This is useful for introducing long comments.
-
- * `eval' always expresses values as signed, whatever the radix.
-
- * M4OPTS environment variable is no longer obeyed.
-
- * `--no-warnings' option is renamed `--silent'.
-
- * Debug lines use a new format more compatible with GNU standards.
-
- * Various bugs have been corrected. See the ChangeLog for details.
-
- Changes for the installer
- -------------------------
-
- * GNU m4 now uses an Autoconf-generated configure script, and should
- be more easily portable in many ways. (Cray is not supported yet).
-
- * `make check' has been made more portable, expect no errors.
-
- Changes for the programmer
- --------------------------
-
- * Sources have been fully reindented to comply with GNU standards, and
- cleaned up in many ways.
-
- * Sources have been protoized. Non-ANSI compilers are automatically
- detected, then sources are unprotoized on the fly before compilation.
-
- * GNU m4 uses newer versions of obstack, regex, getopt, etc.
-
- Version 1.0 - October 1991, by Rene' Seindal
- ============================================
-
- * Uses GNU configure, taken from the gdb distribution.
-
- * Uses GNU getopt(), with long option names.
-
- * The -Q/+quiet option is added, which suppresses warnings about
- missing or superflous arguments to built-in macros.
-
- * Added default options via the M4OPTS environment variable.
-
- * Several minor bugs have been fixed.
-
- Version 0.99 - July 1991, by Rene' Seindal
- ==========================================
-
- * The builtins `incr' and `decr' are now implemented without use of
- `eval'.
-
- * The builtin `indir' is added, to allow for indirect macro calls
- (allows use of "illegal" macro names).
-
- * The debugging and tracing facilities has been enhanced considerably.
- See the manual for details.
-
- * The -tMACRO option is added, marks MACRO for tracing as soon as it
- is defined.
-
- * Builtins are traced after renaming iff they were before.
-
- * Named files can now be undiverted.
-
- * The -Nnum option can be used to increase the number of divertions
- available.
-
- * Calling changecom without arguments now disables all comment
- handling.
-
- * A bug in `dnl' is fixed.
-
- * A bug in the multi-character quoting code is fixed.
-
- * Several typos in the manual has been corrected. More probably
- persist.
-
- Version 0.75 - November 1990, by Rene' Seindal
- ==============================================
-
- * Implemented search path for include files (-I option and M4PATH
- envronment variable).
-
- * Implemented builtin `format' for printf-like formatting.
-
- * Implemented builtin `regexp' for searching for regular expressions.
-
- * Implemented builtin `patsubst' for substitution with regular
- expressions.
-
- * Implemented builtin `esyscmd', which expands to a shell commands
- output.
-
- * Implemented `__file__' and `__line__' for use in error messages.
-
- * Implemented character ranges in `translit'.
-
- * Implemented control over debugging output.
-
- * Implemented multi-character quotes.
-
- * Implemented multi-character comment delimiters.
-
- * Changed predefined macro `gnu' to `__gnu__'.
-
- * Changed predefined macro `unix' to `__unix__', when the -G option is
- not used. With -G, `unix' is still defined.
-
- * Added program name to error messages.
-
- * Fixed two missing null bytes bugs.
-
- Version 0.50 - January 1990, by Rene' Seindal
- =============================================
-
- * Initial beta release.
-
-