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PatternSyntaxException: Illegal Repetition when using regex in Java

I don't know <em>mem>uch regex, but I need to <em>mem>atch a si<em>mem>ple pattern. The following should return true, 2 Answers ...
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How do I list the functions defined in <em>mem>y shell?

... declare -F Function na<em>mem>es and definitions <em>mem>ay be listed with the -f option to the declare builtin co<em>mem><em>mem>and (see Bash Builtins). The -F option to declare will list the function na<em>mem>es only (and optionally the source file and line nu<em>mem>ber). Bas...
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How can I create a correlation <em>mem>atrix in R?

I have 92 set of data of sa<em>mem>e type. 5 Answers 5 ...
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Check if string <em>mem>atches pattern

How do I check if a string <em>mem>atches this pattern? 6 Answers 6 ...
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Echo tab characters in bash script

How do I echo one or <em>mem>ore tab characters using a bash script? When I run this code 10 Answers ...
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What happens if you call erase() on a <em>mem>ap ele<em>mem>ent while iterating fro<em>mem> begin to end?

In the following code I loop through a <em>mem>ap and test if an ele<em>mem>ent needs to be erased. Is it safe to erase the ele<em>mem>ent and keep iterating or do I need to collect the keys in another container and do a second loop to call the erase()? ...
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List co<em>mem>prehension on a nested list?

... Here is how you would do this with a nested list co<em>mem>prehension: [[float(y) for y in x] for x in l] This would give you a list of lists, si<em>mem>ilar to what you started with except with floats instead of strings. If you want one flat list then you would use [float(y) for x in ...
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Different bash pro<em>mem>pt for different vi editing <em>mem>ode?

When using vi <em>mem>ode (set -o vi) with Bash, it would be nice to have a pro<em>mem>pt that depends on the <em>mem>ode you are currently in (insert or co<em>mem><em>mem>and). How does one find out this editing <em>mem>ode? ...
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How to negate the whole regex?

I have a regex, for exa<em>mem>ple (<em>mem>a|(t){1}) . It <em>mem>atches <em>mem>a and t and doesn't <em>mem>atch bla . 4 Answers ...
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Deter<em>mem>ine if $.ajax error is a ti<em>mem>eout

I'<em>mem> utilizing the <em>mem>agic of jQuery.ajax( settings ) . 1 Answer 1 ...