cor­ridx-ob­so­lete – Add in­dex en­tries to LaTeX doc­u­ment

Cor­ridx is a pre­pro­ces­sor which stands be­tween your LaTeX run and makein­dex. It cor­rects in­dex en­tries, in cases where the nat­u­ral way to ex­press an in­dex item is bad for in­dex sort­ing. So, for ex­am­ple, it can sim­ply trans­form an en­try \in­dex{1,2-ethane­diol} to \in­dex{ethane­diol@1,2-ethane­diol}, which will be sorted as you might hope, rather than in amongst the num­bers.
The pro­gram is dis­tributed as Pas­cal source, though a win32 ex­e­cutable is also avail­able; the doc­u­men­ta­tion shows how to in­te­grate it with winedt.
The pro­gram has now been su­per­seded by a LaTeX pack­age which does the job on the fly.