also ignore subdirs of _Z_EXCLUDE_DIRS

README

@@ -60,7 +60,7 @@ NOTES
  Set $_Z_NO_RESOLVE_SYMLINKS to prevent symlink resolution.
  Set $_Z_NO_PROMPT_COMMAND to handle PROMPT_COMMAND/precmd your-
  self.
- Set $_Z_EXCLUDE_DIRS to an array of directories to exclude.
+ Set $_Z_EXCLUDE_DIRS to an array of directory trees to  exclude.
  Set $_Z_OWNER to allow usage when in 'sudo -s' mode.
  (These settings should go in .bashrc/.zshrc before the line
  added above.)
@@ -121,8 +121,8 @@ ENVIRONMENT
  to handle PROMPT_COMMAND or precmd yourself.
 
  The environment variable $_Z_EXCLUDE_DIRS can be set to an array of
- directories to exclude from tracking. $HOME is always excluded. Direc-
- tories must be full paths without trailing slashes.
+ directory trees to exclude from tracking.  $HOME  is  always  excluded.
+ Directories must be full paths without trailing slashes.
 
  The environment variable $_Z_OWNER can be set to your username, to
  allow usage of z when your sudo enviroment keeps $HOME set.

z.1

@@ -81,7 +81,7 @@ Set \fB$_Z_NO_RESOLVE_SYMLINKS\fR to prevent symlink resolution.
 Set \fB$_Z_NO_PROMPT_COMMAND\fR to handle \fBPROMPT_COMMAND/precmd\fR yourself.
 .RE
 .RS
-Set \fB$_Z_EXCLUDE_DIRS\fR to an array of directories to exclude.
+Set \fB$_Z_EXCLUDE_DIRS\fR to an array of directory trees to exclude.
 .RE
 .RS
 Set \fB$_Z_OWNER\fR to allow usage when in 'sudo -s' mode.
@@ -147,7 +147,7 @@ The environment variable \fB$_Z_NO_PROMPT_COMMAND\fR can be set if you want to
 handle \fBPROMPT_COMMAND\fR or \fBprecmd\fR yourself.
 .P
 The environment variable \fB$_Z_EXCLUDE_DIRS\fR can be set to an array of
-directories to exclude from tracking. \fB$HOME\fR is always excluded.
+directory trees to exclude from tracking. \fB$HOME\fR is always excluded.
 Directories must be full paths without trailing slashes.
 .P
 The environment variable \fB$_Z_OWNER\fR can be set to your username, to

z.sh

@@ -41,10 +41,10 @@ _z() {
  # $HOME isn't worth matching
  [ "$*" = "$HOME" ] && return
 
- # don't track excluded dirs
+ # don't track excluded directory trees
  local exclude
  for exclude in "${_Z_EXCLUDE_DIRS[@]}"; do
- [ "$*" = "$exclude" ] && return
+ case "$*" in $exclude*) return;; esac
  done
 
  # maintain the data file