Attributes

Attribute	Description	Required
srcdir	Location of the source files (written in NoWeb format) files	Yes
destdir	Location to store output files. Defaults to srcdir folder.	No
action	The required action ("tangle" or "weave" when a user filter pipeline is not defined). If a user pipeline of filters is defined it can be anything declared in that file (see below). Defaults to "tangle".	No
ext	The extension to be used for the tangle output file. Defaults to "c".	No
filters	The user filter definition file. A file location relative to the build file.	No
includes	Comma- or space-separated list of files (may be specified using wildcard patterns) that must be included; all .nw (or .noweb) files are included when omitted.	No
includesfile	The name of a file that contains a list of files to include (may be specified using wildcard patterns).	No
excludes	Comma- or space-separated list of files (may be specified using wildcard patterns) that must be excluded; no files (except default excludes) are excluded when omitted.	No
excludesfile	The name of a file that contains a list of files to exclude (may be specified using wildcard patterns).	No
root	The root chunk where a tangle process starts. If none is given the processor looks for a chunk named ``*''.	No
delay	By default, noweave puts file-name and other information into the output before the first chunk of the program. delay="true" delays that information until after the first documentation chunk. This option is typically used to enable a user to put a specialized LaTeX \documentclass command and other preamble material in the first documentation chunk (i.e., before the first @ sign). The final chunk is expected to contain \end{document}. Default is false.	No
commentStart	The character sequence that defines the start of a comment string of the output code (weave or tangle). Defaults to "//".	No
commentEnd	The character sequence that defines the end of a comment string of the output code (weave or tangle). Defaults to empty string.	No
verbose	Prints out verbose messages about progress. Default is false.	No
failonerror	Aborts build if set to true. Default is true.	No

File Types

The tangle process uses inline comments to indicate where the code line was defined in the original source. Because there are many different characters for indicated a comment dependent on the language, the plugin detects which to use from the ext attribute. The current list of comment strings is

Extension	Comment start	Comment end
c, cc, m, java, js, swift	//
ada, a, haskell, sql, applescript	--
basic	REM
tex, latex	%
p, pascal	(*	*)
php, perl, py, python, ruby	#
fortran	C
html, xml, xsl, rng, xsd, dsd	<!--	-->

These extensions are stored in the file types.xml and can edited. Typical entries are: