[CMake] configure_file: escaping (single) quotes

[Franck Houssen]

Hello, 

I need configure_file to produce a bash file containing this line: 
VAR="${VAR// ' # ' /}" 

I tried without success VAR="${VAR// ' # ' /}" and VAR="${VAR// \' # \' /}" with and without ESCAPE_QUOTES in configure_file : always get an error like "Syntax error in cmake code when parsing string". 
Not a bash guru, and, can't get if the problem comes from bash or cmake... Can somebody help on this ? 

Franck 
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