Sorry, my note got mangled by the perlmonk-text-input text mangler. I didn't know that square brackets were a reserved HTML character that would be deleted...(I managed to put in the paragraph breaks, but then missed the important "tree" (the expression I was focusing on) due to my focus on the forest (all of my text needing formatting to appear the way I wrote it).
I'm sorry you are unclear about where I'm intending shell expansion to occur. I'm hoping, ney, desiring that text expansion occur in my shell, as determined by the "$SHELL" variable . I see that's a mistake -- that perl uses the more predictable "/bin/sh". Attempting to expand my expression in the shell was why I used backquotes. Unfortunately, I forgot that Perl ignores "$SHELL and uses /bin/sh (otherwise it would run differently on each end-user (if there were other users using this code)'s system).
I really should (as you mention) redo the note using code tags to quote things. Le'me rewrite using better text for the input example as well, as the case I selected was poor in that it doesn't show all of my "matching" problems.
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