Request AlphaGroups label length variable

[simoncn]

Thanks for clarifying this and my apologies for not understanding what you were proposing.

The alphaGroup option shows up to 26 alphabetic selections grouped by first letter, with three special groupings. This is simple and can be implemented very efficiently using a small fixed-length array of 29 groups.

Extending this to an index of groups with more than one letter would require a very different implementation. Two letters could require up to 676 alphabetic groups and three letters could require up to 17576 alphabetic groups. Supporting this would be more complex and much less efficient.

I presume your comment about Date refers to the Decade option (1960s, 1970s, etc.). There are usually a very small number of different decades in a library, so there should be no concerns with efficiency.