zshrc: Add a setting to avoid the persistent dirstack feature to be activated

[grml-etc-core.git] / etc / zsh / zshrc

diff --git a/etc/zsh/zshrc b/etc/zsh/zshrc
index 6a7a1a6..14cc648 100644 (file)
--- a/etc/zsh/zshrc
+++ b/etc/zsh/zshrc
@@ -805,9 +805,16 @@ grmlcomp() {
     # command for process lists, the local web server details and host completion
     zstyle ':completion:*:urls' local 'www' '/var/www/' 'public_html'
 
-    # caching
-    [[ -d $ZSHDIR/cache ]] && zstyle ':completion:*' use-cache yes && \
-                            zstyle ':completion::complete:*' cache-path $ZSHDIR/cache/
+    # Some functions, like _apt and _dpkg, are very slow. We can use a cache in
+    # order to speed things up
+    if [[ ${GRML_COMP_CACHING:-yes} == yes ]]; then
+        GRML_COMP_CACHE_DIR=${GRML_COMP_CACHE_DIR:-${ZDOTDIR:-$HOME}/.cache}
+        if [[ ! -d ${GRML_COMP_CACHE_DIR} ]]; then
+            command mkdir -p "${GRML_COMP_CACHE_DIR}"
+        fi
+        zstyle ':completion:*' use-cache  yes
+        zstyle ':completion:*:complete:*' cache-path "${GRML_COMP_CACHE_DIR}"
+    fi
 
     # host completion
     if is42 ; then
@@ -1580,8 +1587,6 @@ function command_not_found_handler() {
 
 # history
 
-ZSHDIR=${ZDOTDIR:-${HOME}/.zsh}
-
 #v#
 HISTFILE=${ZDOTDIR:-${HOME}}/.zsh_history
 isgrmlcd && HISTSIZE=500  || HISTSIZE=5000
@@ -1592,50 +1597,52 @@ isgrmlcd && SAVEHIST=1000 || SAVEHIST=10000 # useful for setopt append_history
 DIRSTACKSIZE=${DIRSTACKSIZE:-20}
 DIRSTACKFILE=${DIRSTACKFILE:-${ZDOTDIR:-${HOME}}/.zdirs}
 
-typeset -gaU GRML_PERSISTENT_DIRSTACK
-function grml_dirstack_filter() {
-    local -a exclude
-    local filter entry
-    if zstyle -s ':grml:chpwd:dirstack' filter filter; then
-        $filter $1 && return 0
-    fi
-    if zstyle -a ':grml:chpwd:dirstack' exclude exclude; then
-        for entry in "${exclude[@]}"; do
-            [[ $1 == ${~entry} ]] && return 0
-        done
-    fi
-    return 1
-}
-
-chpwd() {
-    (( $DIRSTACKSIZE <= 0 )) && return
-    [[ -z $DIRSTACKFILE ]] && return
-    grml_dirstack_filter $PWD && return
-    GRML_PERSISTENT_DIRSTACK=(
-        $PWD "${(@)GRML_PERSISTENT_DIRSTACK[1,$DIRSTACKSIZE]}"
-    )
-    builtin print -l ${GRML_PERSISTENT_DIRSTACK} >! ${DIRSTACKFILE}
-}
+if zstyle -T ':grml:chpwd:dirstack' enable; then
+    typeset -gaU GRML_PERSISTENT_DIRSTACK
+    function grml_dirstack_filter() {
+        local -a exclude
+        local filter entry
+        if zstyle -s ':grml:chpwd:dirstack' filter filter; then
+            $filter $1 && return 0
+        fi
+        if zstyle -a ':grml:chpwd:dirstack' exclude exclude; then
+            for entry in "${exclude[@]}"; do
+                [[ $1 == ${~entry} ]] && return 0
+            done
+        fi
+        return 1
+    }
 
-if [[ -f ${DIRSTACKFILE} ]]; then
-    # Enabling NULL_GLOB via (N) weeds out any non-existing
-    # directories from the saved dir-stack file.
-    dirstack=( ${(f)"$(< $DIRSTACKFILE)"}(N) )
-    # "cd -" won't work after login by just setting $OLDPWD, so
-    [[ -d $dirstack[1] ]] && cd -q $dirstack[1] && cd -q $OLDPWD
-fi
+    chpwd() {
+        (( $DIRSTACKSIZE <= 0 )) && return
+        [[ -z $DIRSTACKFILE ]] && return
+        grml_dirstack_filter $PWD && return
+        GRML_PERSISTENT_DIRSTACK=(
+            $PWD "${(@)GRML_PERSISTENT_DIRSTACK[1,$DIRSTACKSIZE]}"
+        )
+        builtin print -l ${GRML_PERSISTENT_DIRSTACK} >! ${DIRSTACKFILE}
+    }
 
-if zstyle -T ':grml:chpwd:dirstack' filter-on-load; then
-    for i in "${dirstack[@]}"; do
-        if ! grml_dirstack_filter "$i"; then
-            GRML_PERSISTENT_DIRSTACK=(
-                "${GRML_PERSISTENT_DIRSTACK[@]}"
-                $i
-            )
-        fi
-    done
-else
-    GRML_PERSISTENT_DIRSTACK=( "${dirstack[@]}" )
+    if [[ -f ${DIRSTACKFILE} ]]; then
+        # Enabling NULL_GLOB via (N) weeds out any non-existing
+        # directories from the saved dir-stack file.
+        dirstack=( ${(f)"$(< $DIRSTACKFILE)"}(N) )
+        # "cd -" won't work after login by just setting $OLDPWD, so
+        [[ -d $dirstack[1] ]] && cd -q $dirstack[1] && cd -q $OLDPWD
+    fi
+
+    if zstyle -t ':grml:chpwd:dirstack' filter-on-load; then
+        for i in "${dirstack[@]}"; do
+            if ! grml_dirstack_filter "$i"; then
+                GRML_PERSISTENT_DIRSTACK=(
+                    "${GRML_PERSISTENT_DIRSTACK[@]}"
+                    $i
+                )
+            fi
+        done
+    else
+        GRML_PERSISTENT_DIRSTACK=( "${dirstack[@]}" )
+    fi
 fi
 
 # directory based profiles
@@ -2504,16 +2511,14 @@ hash -d www=/var/www
 if check_com -c screen ; then
     if [[ $UID -eq 0 ]] ; then
         if [[ -r /etc/grml/screenrc ]]; then
-            alias screen="${commands[screen]} -c /etc/grml/screenrc"
+            alias screen='screen -c /etc/grml/screenrc'
         fi
-    elif [[ -r $HOME/.screenrc ]] ; then
-        alias screen="${commands[screen]} -c $HOME/.screenrc"
-    else
+    elif [[ ! -r $HOME/.screenrc ]] ; then
         if [[ -r /etc/grml/screenrc_grml ]]; then
-            alias screen="${commands[screen]} -c /etc/grml/screenrc_grml"
+            alias screen='screen -c /etc/grml/screenrc_grml'
         else
             if [[ -r /etc/grml/screenrc ]]; then
-                alias screen="${commands[screen]} -c /etc/grml/screenrc"
+                alias screen='screen -c /etc/grml/screenrc'
             fi
         fi
     fi
@@ -2703,11 +2708,10 @@ __EOF0__
     fi
 fi
 
-# Use hard limits, except for a smaller stack and no core dumps
-unlimit
-is425 && limit stack 8192
-isgrmlcd && limit core 0 # important for a live-cd-system
-limit -s
+if isgrmlcd; then
+    # No core dumps: important for a live-cd-system
+    limit -s core 0
+fi
 
 # grmlstuff
 grmlstuff() {