Version 1.21

Changes since 1.20

Library:

• Added params.strictMacroArguments (which is enabled by default). Macro arguments are validated to be Lua expressions once again, unless strictMacroArguments is disabled.
• Added the metaprogram code as an argument to params.onBeforeMeta().
• Added functions: callMacro(), isProcessing().
• params.onBeforeMeta() is now only called, and *.meta.lua files are only written, if processing is necessary (i.e. not for plain Lua files in most cases).
• Plain Lua files should process a bit faster.
• Checking that params.pathMeta isn't the same as the input or output path.
• Error messages showing lots of code are now shortened.
• Fixed evaluate() treating empty code as a valid expression.

Command line program:

• Added option: --nostrictmacroarguments.
• Added the metaprogram code as an argument to the "beforemeta" message handler.
• The "beforemeta" message is now only sent, and *.meta.lua files are only written, if processing is necessary (i.e. not for plain Lua files in most cases).

Version 1.20

Changes since 1.19

Library:

• getOutputSoFar() can now take an output buffer argument.
• Detecting duplicate names in dual code: !!x, x = ...
• Fixed evaluate() sometimes raising an error instead of returning it.
• Fixed issue with files not ending with a newline.
• Fixed silly internal error when Lua 5.2+ was used.

Command line program:

• Added options: --version, --help.
• Added "alldone" message.
• --meta can now take a file path.
• Fixed silly internal error when Lua 5.2+ was used.

Repository:

• Fixed test suite not working in Lua 5.2+. Oops!

Version 1.19

Changes since 1.18

Library:

• All uses of ! now work in macros.
• Added functions: getIndentation(), getCurrentIndentationInOutput(), getOutputSoFarOnLine(), writeFile().
• Added function readFile() as alias for getFileContents(). (The latter is now deprecated.)
• Added environment argument to evaluate().
• pp.metaEnvironment is now only a shallow copy of _G (i.e. pp.metaEnvironment.io == _G.io etc.).
• LuaJIT: Added support for binary numerals (i.e. 0b110010).

Version 1.18

Changes since 1.17

Library:

• Added functions: loadResource(), evaluate(), pairsSorted(), sortNatural() and compareNatural().
• $symbol now accepts callable tables in addition to functions.
• Argument expressions for macros are no longer validated. This was inconsistent before as they were only validated when not containing preprocessor code, like @@foo(!!(bar)).

Version 1.17

Changes

Library:

• Added predefined macros @@ASSERT() and @@LOG().
• Added params.release and params.logLevel for controlling aspects of the predefined macros. (See processFile().)
• Added params.macroPrefix and params.macroSuffix (e.g. make @@FOO() call the function MACRO_FOO()).

Command line program:

• Added support for using stdin/stdout as input/output. (Specify "-" as the file path.)
• Added --release and --loglevel options.
• Added --macroprefix and --macrosuffix options.

Version 1.16

Changes

Library:

• Added preprocessor symbols (in the form of $name).
• Added functions: startInterceptingOutput(), stopInterceptingOutput().
• Macros can use outputLua() and co. instead of returning code.
• Detecting errors such as !(x,y).

Version 1.15

Check out the new syntax highlighter tool on the website!

Changes

Library:

• Added functions: getOutputSoFar(), getOutputSizeSoFar(), getCurrentLineNumberInOutput().
• outputValue() with multiple values will now output commas between the values.
• Added @insert func!(...) as syntax sugar for @insert func(!(...)).
• Added @insert func!!(...) as syntax sugar for @insert func(!!(...)).

Command line program:

• Added --nogc option.

Version 1.14

LuaPreprocess has a new website! Documentation has moved here.

Changes

Library:

• !(), !!() and @insert now work in macros.
• Macro names can now contain lookups.
• Updated string serialization, including for newToken("string").
• Fixed error in output for @line.."".
• Improved some error messages.

Version 1.13.2

Changes

Command line program:

• Fixed internal error when reporting a user error.

Version 1.13.1

Changes

Library:

• Dual code now supports multiple assignment targets: !!x, y = ...
• Some non-ASCII characters in serialized strings look nicer.
• Added params.fastStrings.
• Fixed backtick strings not working in macros.

Command line program:

• Added --faststrings option.