* lisp/progmodes/antlr-mode.el: Remove XEmacs compatibility
(cond-emacs-xemacs, cond-emacs-xemacs-macfn, defunx, ignore-errors-x): Remove those functions and macros. Replace every use with the result of their use. (antlr-default-directory): Remove function, use the `default-directory` variable instead. (antlr-read-shell-command): Remove function, use `read-shell-command` instead. (antlr-with-displaying-help-buffer): Remove function, by inlining it at its only call site. (antlr-end-of-rule, antlr-beginning-of-rule, antlr-end-of-body) (antlr-beginning-of-body): Mark them as movement commands.
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