case insensitive completion and _

[Eric Blake]

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I have often wished for an easy way to treat - and _ as case-insensitive
mappings to one another, similar to how tcsh does case-insensitive
completion.  With that in place, I don't need to use the shift key, even
for completion on files like a_b (just type a, -, <tab>).  Any chance
readline 6.0 can offer a configuration parameter for this ability?

- --
Don't work too hard, make some time for fun as well!

Eric Blake             ebb9@byu.net
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