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st: subinstr and special characters ? and *

From   A Loumiotis <>
Subject   st: subinstr and special characters ? and *
Date   Fri, 13 Aug 2010 13:25:15 +0300


Is there a way to use subinstr to replace a pattern that is given with
the special characters ? or * with something else?

For example:

local a p_2_3456
local b: subinstr local a "_?_" "__"
di "`b'"
local b=subinstr("`a'","_?_","__",1)
di "`b'"

I would expect that b will now be p__3456 but subinstr does not
recognize _?_ to include _2_ .
Is there anyway to do this?
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