Is it possible to highlight matching quotes as
show-paren-mode does with parentheses? The characters I'm looking to highlight are "dumb" quotes, both single (Unicode: apostrophe, U+0027) and double (Unicode: quotation mark, U+0022).
Sometimes I get lost in Fortran format specifiers, like
'("strg1", i2, "strg2", i11)'. Highlighting matching quotes there would help me tell apart the pieces of the specifier.
I'd prefer not to use
smartparens. If your solution uses it please provide a set-up that just highlights matching quotes without otherwise altering the pairing or highlighting of matching delimiters.