A non zero value activates a handler, which is called when a command can not
be found. The handler is defined by GRML_ZSH_CNF_HANDLER (see below).
+: **GRML_COMP_CACHING**
+If set to //yes// (the default), the setup will enable zsh's completion caching
+mechanism, with the caching data being placed into //$GRML_COMP_CACHE_DIR//.
+
+: **GRML_COMP_CACHE_DIR**
+This defines where zsh's completion caching data will be placed, if
+//$GRML_COMP_CACHING// is active. The default is //${ZDOTDIR:-$HOME}/.cache//.
+The setup will ensure the directory exists before attempting to use it.
+
: **GRML_DISPLAY_BATTERY**
If set to a value greater than zero, //grmlzshrc// will put the battery status
into the right hand side interactive prompt. Supported OSes are //GNU/Linux//,
zshs inherit the dirstack of the zsh that most recently updated
**DIRSTACKFILE**.
+If you would like to //disable// the persistent dirstack feature altogether,
+you can do that by setting the boolean //enable// style to //false// in the
+right context (the default is //true//):
+\
+```
+zstyle ':grml:chpwd:dirstack' enable false
+```
+
+It is possible to apply a filter to the names of directories that will be
+committed to the persistent dirstack file. There are two ways to configure this
+filter: A general function based filter and a pattern based filter. Both are
+setup via styles in the **':grml:chpwd:dirstack'** context.
+
+To use a function based filter set the //filter// style for that context to the
+name of a function to call every time a directory name is to be added to the
+persistent dirstack. If the function's return value signals success (ie. return
+value "0"), the directory name is filtered out and **not** added to the
+persistent stack. Example:
+\
+```
+function my_dirstack_filter() { [[ $1 == /tmp(|/*) ]] }
+zstyle ':grml:chpwd:dirstack' filter my_dirstack_filter
+```
+
+The pattern based filter uses a list of patterns passed to the //exclude//
+style in the aforementioned context. Each pattern is tested and the first that
+matches will keep the directory name from being added to the persistent stack.
+If none of the patterns matches, the name is added. example:
+\
+```
+zstyle ':grml:chpwd:dirstack' exclude "/tmp(|/*)" "$HOME/tmp(|/*)"
+```
+
+The function based filter is more general, the pattern based filter easier to
+set up. If both filter variants are used at the same time, the function based
+filter will be executed //before// the pattern based one.
+
+If you would like to apply your filters while //loading// the persistent
+dirstack file, set the //filter-on-load// boolean style (the default is
+//false//):
+\
+```
+zstyle ':grml:chpwd:dirstack' filter-on-load true
+```
+
+Setting the //filter-on-load// and //enable// styles needs to be done in
+".zshrc.pre" because the styles need to be set when the main setup is
+executing! The other styles do not have this limitation, but enabling the
+system as well as the initial filtering will obviously be done using settings
+and filters that are configured **at** **that** **point**.
+
+With respect to //filter-on-load//, the rule of thumb is: If you want to filter
+on load, setup everything in ".zshrc.pre" otherwise ".zshrc.local" works just
+as well.
+
+
== DIRECTORY BASED PROFILES ==
If you need to perform certain actions each time you enter certain
: **PAGER**
Set less(1) as default pager, if not already set to something different.
-: **SHELL**
-Set explicitly to /bin/zsh, to prevent certain terminal emulators to
-default to /bin/sh or /bin/bash.
-
== OPTIONS ==
Apart from zsh's default options, //grmlzshrc// sets some options
last N days. N is an integer to be passed as first and only argument.
If no argument is specified N is set to 1.
-: **allulimit()**
-Sets all ulimit values to "unlimited".
-
: **any()**
Lists processes matching given pattern.
```
: **profile()**
-Runs a command in $SHELL with profiling enabled (See startup variable
+Runs a command in zsh with profiling enabled (See startup variable
ZSH_PROFILE_RC above).
: **salias()**
: **rmcdir** (//'cd ..; rmdir $OLDPWD || cd $OLDPWD//)
rmdir current working directory
-: **screen** (///usr/bin/screen -c ${HOME}/.screenrc//)
+: **screen** (//screen -c file//)
If invoking user is root, starts screen session with /etc/grml/screenrc
-as config file. If invoked by a regular user, start a screen session
-with users .screenrc config if it exists, else use /etc/grml/screenrc_grml
-as configuration.
+as config file. If invoked by a regular user and users .screenc does not exist,
+starts screen with /etc/grml/screenrc_grml config if it exists, else fallbacks
+to /etc/grml/screenrc.
: **su** (//sudo su//)
If user is running a Grml live system, don't ask for any password, if she
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