README for the `bitelist' package "Split list at list inside in TeX's Mouth" (C) Uwe Lueck 2012/03/28 `bitelist.sty' provides commands for "splitting" a token list at the first occurrence of a contained token list. I.e., for given token lists s, t return b and shortest a, such that t = a s b. As opposed to other packages providing similar features, (i) the method uses TeX's mechanism of reading delimited macro parameters; (ii) the splitting macros work by pure expansion, without assignments, provided the macro doing the search has been defined before processing (e.g., a file); (iii) instead of using one macro for a "substring" test and another one to replace the "substring"--which includes extracting corresponding prefix and suffix--, the *same* macro that detects the occurrence returns the split; (iv) e-TeX is not required. (And LaTeX is not required.) This improves `fifinddo.sty' (v0.51). An elaborated approach (additionally to a simpler one) is provided that does not loose outer braces of prefix/suffix. "Substring" detection and "string" replacement are (implicitly) included with respect to certain representations of characters by tokens. Counting occurrences and "global" replacement could be achieved by applying the operation to earlier results, etc.--so this approach seems to be "fundamental" for a certain larger set of list analysis tasks. The documentation aims to prove the correctness of the methods with mathematical rigour. KEYWORDs: macro programming, text filtering, substrings RELATEd PACKAGEs: datatool, stringstrings, ted, texapi, xstring The package file `bitelist.sty' and the documentation files `bitelist.pdf' and `bitelist.tex' can be redistributed and/or modified under the terms of the LaTeX Project Public License; either version 1.3c of the License, or any later version, see http://www.latex-project.org/lppl.txt We did our best to help you, but there is NO WARRANTY. The `bitelist' package is author-maintained in the sense of this license. The latest public version of the package is available at http://mirror.ctan.org/macros/latex/contrib/bitelist/ A TDS version of the package is available as http://mirror.ctan.org/install/macros/generic/bitelist.tds.zip Please report bugs, problems, and suggestions via http://www.contact-ednotes.sty.de.vu
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bitelist – Split list, in TeX’s mouth
The package provides commands for “splitting” a token list at the first occurrence of another (specified) token list. I.e., for given token lists s, t return b and the shortest a, such that t = a s b.
The package’s mechanism differs from those of packages providing similar features, in the following ways:
- the method uses TeX’s mechanism of reading delimited macro parameters;
- splitting macros work by pure expansion, without assignments;
- the operation is carried out in a single macro call.
A variant of the operation is provided, that retains outer braces.
The LaTeX Project Public License 1.3|
|Contained in||TeX Live as bitelist|
|MiKTeX as bitelist|
manipulate strings (typically in token lists)|
support for development of (La)TeX macros