PATCH: 3.1.5-pws-3: Namedir behavior of PWD is still strange

["Bart Schaefer" <schaefer@brasslantern.com>]

This is with 3.1.5-pws-3, run as zsh -f:

zagzig% echo ~PWD 
/usr/local/src/zsh/zsh-3.1.5-work/Src
zagzig% dirs
~PWD
zagzig% pushd work build
/usr/local/src/zsh/zsh-3.1.5-build/Src ~PWD

(Whups, the dirtable entry for PWD didn't change when PWD did.  Should
be "~PWD /usr/local/src/zsh/zsh-3.1.5-work/Src" if anything.)

I'm beginning to question my own prior conclusion, and to believe that
PWD and OLDPWD should simply *never* be named directories, whether or not
such naming was explicitly requested.  Why would anyone ever *intend* to
cause the following?

zagzig% dirs
~PWD ~OLDPWD

The following patch causes the dirtable to be kept up to date once an entry
is in it, even for PWD.  However, we should discuss again what is the most
desirable behavior.  Maybe the right thing is to permit PWD and OLDPWD to
be named directories, but never use them when displaying abbreviated forms?

Index: Src/utils.c
===================================================================
--- utils.c	1998/12/11 12:09:51	1.7
+++ utils.c	1998/12/15 04:02:28
@@ -510,16 +510,13 @@
     if ((flags & ND_USERNAME) && nameddirtab->getnode2(nameddirtab, s))
 	return;
 
-    /* Never hash PWD unless it was explicitly requested */
-    if (!always && !strcmp(s, "PWD"))
-	return;
-
     /* Normal parameter assignments generate calls to this function, *
      * with always==0.  Unless the AUTO_NAME_DIRS option is set, we  *
      * don't let such assignments actually create directory names.   *
      * Instead, a reference to the parameter as a directory name can *
-     * cause the actual creation of the hash table entry.            */
-    if (!always && unset(AUTONAMEDIRS) &&
+     * cause the actual creation of the hash table entry. Never hash *
+     * PWD unless it was explicitly requested (or already hashed).   */
+    if (!always && (unset(AUTONAMEDIRS) || !strcmp(s, "PWD")) &&
 	    !nameddirtab->getnode2(nameddirtab, s))
 	return;
 

-- 
Bart Schaefer                                 Brass Lantern Enterprises
http://www.well.com/user/barts              http://www.brasslantern.com