Documentation

Prepare slides

Internal

For matching use PGE instead of PCRE.

Testing

Modify 'output_is' such that GNU m4 is only tested when available.

Add tests for new features

Add test for dumping frozen file

Features

The features that need to be implemented are arranged by chapters in the GNU m4 documentation.

Chapter 1 Introduction and preliminaries

read from STDIN, when no file is passed

Add some tests with Autoconf macros

Parsing of short options

recognize unambigous long options

Option -G or --traditional

Option -E or --fatal-warnings

Option -d or --debug

Option -l or --arglength

Option -o or --error-output

Option -I or --include

Option -e or --interactive

Option -s or --synclines

Option -P or --prefix-builtins

Option -W or --word-regexp

Option -H or --hash-size

Option -L or --nesting-limit

Option -Q or --quiet or --silent

Option -B, -S, -T

Option -N or --diversions

Option -D or --define

Option -U or --undefine

Option -t or --trace

Chapter 2 Lexical and syntactic conventions

Nested quoted strings

Chapter 3 How to invoke macros

Option -P or --prefix-builtins

trailing whitespace in macro calls

warnings for inappropriate number of arguments

implement option '--changeword'

recognize unquoted parenthesis in macros

Chapter 4 How to define new macros

implement indirect macro calls

implement 'pushdef' and 'popdef'

implement 'defn'

Do 'input_stack' properly

Special arguments to macros

Chapter 5 Conditionals, loops and recursion

implement 'shift'

implement 'ifelse' used as switch

Write tests with recursion

Chapter 6 How to debug macros and input

implement macro 'dumpdef'

Implement debugging options

implement tracing

implement 'debugfile'

Chapter 7 Input control

everything

Chapter 8 File inclusions

File inclusion

include path

implement 'include'

implement 'sinclude'

Chapter 9 Diverting and undiverting output

Diversions

Chapter 10 Macros for text handling

macro b<translit> add as an op or port from GNU m4

macros b<regexp> and b<patsubst> POSIX regexes

Chapter 11 Macros for doing arithmetic

incr, decr of large numbers

radix support for `eval'

Chapter 12 Running UNIX commands

Why isn't there a 'system' in Parrot?

names for temporary files

Chapter 13 Micellaneous builtin Functions

Macro b<__file__>

Macro b<__line__>

Chapter 14 Fast loading of frozen states

Needs to be fixed, as the rx_* ops are gone

more tests

Chapter 15 Compatability with other versions of m4

Document the differences between Parrot m4 and GNU m4

cpanm Parrot::Op

perl -MCPAN -e shell
install Parrot::Op