HideIfDef mode bug fixes and enhancements. This is #3 of 3 patches based
on the completed work posted on http://www.emacswiki.org/emacs/HideIfDef. - Add macro evaluation function and key binding for a marked region. - Merge continuous "..." lines into one. - Fix old hideif bugs that fail to hide the correct #elif regions - Support hide/show commands in a marked region. - Expand top level for .h files to prevent re-inclusion protection. - Change maintainer. * lisp/progmodes/hideif.el (hide-ifdef-env): Change to global. (hide-ifdef-env-backup): New variable. (hide-ifdef-expand-reinclusion-protection, hide-ifdef-header-regexp): New customizable variables. (hif-clear-all-ifdef-defined): New defun. (hif-merge-ifdef-region, hide-ifdef-region-internal, hide-ifdef-region) (hif-show-ifdef-region): Merge hidden regions to prevent continuous "...". (hif-tokenize): Fix for MS-DOS/Win EOL style. (hif-endif-to-ifdef, hif-make-range, hif-find-range, hif-possibly-hide): Fix bug to hide the correct #elif region(s). (hif-range-elif): New defun. (hif-recurse-level): New var. (hif-evaluate-region, hif-evaluate-macro): New defun. (hide-ifdef-guts): Prevent reinclusion protected C/C++ headers from fully hidden. (hide-ifdef-define, hide-ifdefs, hide-ifdef-block, show-ifdef-block): Better interaction.
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