bash test regex does not work as expected

Question

I am having a bash script that operates on multiple files but the operation shall not take place on a specific subset of files - if the filename matches ~.jpg [e.g. as in myimage~xa.jpg].

declare -a AFileList2

for sFile in *.jpg
do
   echo "Testing $sFile"
   if [ -d "$sFile" ]
   then
      echo "skipping directory $sFile"
   else
      if [ -f "$sFile" ]
      then
         if [[ "$sFile" =~ "*~*.*" ]]
         then
            echo "skipping $sFile"
         else
            echo "operating on  $sFile"
            AFileList2+=($sFile)
            ((iFilesFound++))
         fi

      fi
   fi
done
echo "Found by eval: $iFilesFound file(s)"

the crucial part of the for-loop above is the line

if [[ "$sFile" =~ "*~*.*" ]]

But it doesn't work.

I have it from an example in the pdf Advanced bash scripting guide where a demo script reads:

#!/bin/bash
variable="This is a fine mess."
echo "$variable"
if [[ "$variable" =~ "T*fin*es*" ]]
    # Regex matching with =~ operator within [[ double brackets ]].
then
   echo "match found"
   # match found
fi

But even this demo script does not work as expected.

any help apreciated

Answer 1

Replace this (globbing?)

[[ "$sFile" =~ "*~*.*" ]]

by this Regex

[[ "$sFile" =~ .*~.*\..* ]]