🚀 go-pugleaf

In GNU Emacs 19.25.94.2 (sparc-sun-solaris2.3, X toolkit) of Wed Aug 24 1994 on prometheus

[Sorry; I'll rephrase my previous bug report so it has nothing to do
with hilit19; that was just an artifact of how I discovered the bug.
It can be shown just as easily with any regexp search function, even
incremental regexp search (which is a totally awesome feature, BTW).]

If you visit the file appended at the end of this bug report, and you
enter hide-ifdef-mode and hide-ifdefs (or just set selective-display
to t and change all the newlines to ^Ms), and then do a simple
anchored-on-both-sides regexp search like "^.*$", you will get an
error from the regexp matcher:

  [Stack overflow in regexp matcher]

as soon as you try to match something in the hidden part.
This is presumably because the regexp matcher is interacting badly
with selective-display when it's t (in ^M-mode); It seems the regexp
matcher thinks it's matching one long line.

Another manifestation of the same bug is to try to find an
anchored-at-the-start regexp (e.g. "^this") in the hidden area.  It
won't be found, because none of the ^Ms match the ^ in the regex.

Don't have a fix for this one, sorry.  Possibly the regex code has to
know about selective-display (to use ^M as a newline)???  Sounds
gross, but I don't know what the alternatives are.

-- Gary Oberbrunner (garyo@avs.com)

/* here's a test file.  It's just 261 or so lines of text with an
 * #ifdef/#endif pair around them.
 */

#ifdef FOO

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;
this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;
this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

this is a c statement;

#endif

/* This is the end of the test file */