## Checking a LaTeX Index

March 31, 2015

This week again, LaTeX. This time, the index. At the end of a document, you will usually find an index so that, if you don’t have a magical ctrl-f, you can find something fast in the book.

In LaTeX, creating an index is really easy. You include the package makeindex, and plant \index{topic!subtopic} tags in the text (preferably just besides the word you want to index, the \index command doesn’t understand paragraphs). You add \printindex somewhere else in your document and you run pdflatex (or just latex) to get the index generated. That’s all fine except that it doesn’t provide checks. It adds to the index whatever you typed, and doesn’t give warnings if you have an entry “compression” and an entry “compresion” (because, you know, typos happen). Let’s see how we can somewhat fix that.