Dear list,
In cleaning up mountains of OCR'd text, I've found Grep doing something
I don't undesrtand.
The aim is to locate lines ending with certain punctuation marks(-—.)
and spaces. But depending on the order of those punctuation marks, I get
different results. With the full stop listed first, I get two results,
one of which doesn't fit the criteria; with the stop third I get 5 lines
correctly matching the criteria (and I presume, all the lines that do
match).
johnl@Hasek:~/github/statutes$ grep ' [.-— ]\{3,\}$' W*/mon*.txt
and every of them are and is hereby obliged to accept, re- ...
1. s. </.~|
johnl@Hasek:~/github/statutes$ grep ' [-—. ]\{3,\}$' W*/mon*.txt
and every of them are and is hereby obliged to accept, re- ...
'fliqitors autj licences, — Aorb’s -----
IPfipficians, -----
II — -- — -.... - -- - - - —
shall be ~ - - —
Is there something about the order of characters in regex square
brackets? Does the stop have a special meaning when given first?
Thanks in advance,
John
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