Chong Yidong writes: >> If I try to validate a SVG with a huge path element in nxml-mode I get >> the error: Internal error in rng-validate-mode triggered at buffer >> position 616. Stack overflow in regexp matcher. > > Could you provide a precise, step-by-step recipe for reproducing this > problem, starting with `emacs -Q'? emacs -Q M-: (progn (switch-to-buffer (find-file (url-file-local-copy "http://karme.de/delme/test.svg"))) (nxml-mode) (switch-to-buffer "*Messages*")) I also attached the test file. If really needed I can create a stripped down version.