File: web2c.info, Node: tangle invocation, Next: weave invocation, Up: WEB 8.1 Tangle: Translate WEB to Pascal =================================== Tangle creates a compilable Pascal program from a WEB source file (*note WEB::). Synopsis: tangle [OPTION]... WEBFILE[.web] [CHANGEFILE[.ch]] The Pascal output is written to the basename of WEBFILE extended with `.p'; for example, `tangle /wherever/foo.web' creates `./foo.p'. Tangle applies CHANGEFILE to WEBFILE before writing the output; by default, there is no change file. If the program makes use of the WEB string facility, Tangle writes the string pool to the basename of WEBFILE extended with `.pool'. The Pascal output is packed into lines of 72 characters or less, with the only concession to readability being the termination of lines at semicolons when this can be done conveniently. The program accepts the following options, as well as the standard `--help' and `--version' (*note Common options::): `-length=NUMBER' The number of characters that are considered significant in an identifier. Whether underline characters are counted depends on the `-underline' option. The default value is 32, the original tangle used 7, but this proved too restrictive for use by Web2c. `-lowercase' `-mixedcase' `-uppercase' These options specify the case of identifiers in the output of tangle. If `-uppercase' (`-lowercase') is specified, tangle will convert all identfiers to uppercase (lowercase). The default is `-mixedcase', which specifies that the case will not be changed. `-underline' When this option is given, tangle does not strip underline characters from identifiers. `-loose' `-strict' These options specify how strict tangle must be when checking identifiers for equality. The default is `-loose', which means that tangle will follow the rules set by the case-smashing and underline options above. If `-strict' is set, then identifiers will always be stripped of underlines and converted to uppercase before checking whether they collide.