vimrc: Major rework of the Grml configuration

[grml-etc-core.git] / etc / minimal-shellrc

diff --git a/etc/minimal-shellrc b/etc/minimal-shellrc
index f01580b..23aa9a2 100644 (file)
--- a/etc/minimal-shellrc
+++ b/etc/minimal-shellrc
@@ -1,7 +1,6 @@
 # vim:ft=sh:fdm=marker
-#
-# configuration used for an absolute minimal ksh shell.
-# Reason: reference no files in /usr/, so that FS can be umounted.
+# Configuration for the `minimal-shell' function of grml's zsh setup.
+# That function spawns a `mksh' shell with this file as its configuration.
 
 # skip this setup for non-interactive shells
 [[ -o interactive && -t 0 ]] || return
@@ -20,54 +19,54 @@ else
     export PAGER='more'
 fi
 
-FPATH=/usr/share/ksh/functions
-HISTSIZE=500
-HISTEDIT="$EDITOR"
-
 # some options.
-set -o emacs -o trackall -o globstar
+set -o bgnice        \
+    -o braceexpand   \
+    -o emacs         \
+    -o markdirs      \
+    -o monitor       \
+    -o nohup         \
+    -o trackall
 
 # aliases for various command shortcuts
-alias ls='ls --color=auto'  # we're on grml, so we do have GNU ls.
-alias ll='ls -lFb'
-alias la='ls -LaFb'
+alias ls='command ls --color=auto'  # we're on grml, so we do have GNU ls.
+alias ll='command ls -l --color=auto'
+alias la='command ls -la --color=auto'
 alias pu='ps -fu $USER'
 
-# Use keyboard trap to map keys to other keys
-# note that escape sequences vary for different terminals so these
-# may not work for you
-trap '.sh.edchar=${keymap[${.sh.edchar}]:-${.sh.edchar}}' KEYBD
-
+## Keybindings
+bind '^L=clear-screen'
 if [[ -x $(which infocmp) ]] && [[ -x $(which sed) ]] ; then
-    # reading some special keys from terminfo database.
-    # should work everywhere. hopefully.
-    typeset -A keymap
-    infocmp -L | sed '1,2d;s/\t//;s/, /\n/g;s/,$//' | \
+    # Reading some special keys from terminfo database. If `infocmp'
+    # cannot be found, we rely on mksh to do the right thing.
+    infocmp -x1L | sed '/^\t[^k]/d;/^[^\t]/d;s/\t//;s/,$//' | \
         while read -r line ; do
             key="${line%=*}"
-            seq="${line#*=}"
+            [[ "${key}" != k* ]] && continue
+            seq="$(print -r -- "${line#*=}" | sed -e 's,\\\([1-7][0-7]*\),\\0\1,g')"
+            seq="$(print "${seq}")"
             case "$key" in
-                key_left)       keymap+=( [$(print "$seq")]=$'\cb' ) ;;
-                key_right)      keymap+=( [$(print "$seq")]=$'\cf' ) ;;
-                key_up)         keymap+=( [$(print "$seq")]=$'\cp' ) ;;
-                key_down)       keymap+=( [$(print "$seq")]=$'\cn' ) ;;
-                key_home)       keymap+=( [$(print "$seq")]=$'\ca' ) ;;
-                key_end)        keymap+=( [$(print "$seq")]=$'\ce' ) ;;
-                key_backspace)  keymap+=( [$(print "$seq")]=$'\ch' ) ;;
-                key_dc)         keymap+=( [$(print "$seq")]=$'\cd' ) ;;
+                key_left)      bind "${seq}"='backward-char'        ;;
+                key_right)     bind "${seq}"='forward-char'         ;;
+                key_up)        bind "${seq}"='up-history'           ;;
+                key_down)      bind "${seq}"='down-history'         ;;
+                key_ppage)     bind "${seq}"='search-history-up'    ;;
+                key_npage)     bind "${seq}"='search-history-down'  ;;
+                key_home)      bind "${seq}"='beginning-of-line'    ;;
+                key_end)       bind "${seq}"='end-of-line'          ;;
+                key_backspace) bind "${seq}"='delete-char-backward' ;;
+                key_dc)        bind "${seq}"='delete-char-forward'  ;;
             esac
         done
-else
-    # fallback, does not work in all terminals.
-    keymap=(
-        [$'\eOD']=$'\eb'   # Ctrl-Left  -> move word left
-        [$'\eOC']=$'\ef'   # Ctrl-Right -> move word right
-        [$'\e[3~']=$'\cd'  # Delete     -> delete to right
-        [$'\e[1~']=$'\ca'  # Home       -> move to beginning of line
-        [$'\e[4~']=$'\ce'  # End        -> move to end of line
-    )
 fi
 
+function _lrv {
+    local rv="$?"
+    if [[ "${rv}" != 0 ]]; then
+        print -- "[${rv}]-"
+    fi
+    return 0
+}
 # put the current directory and history number in the prompt.
 # use a wrapper for 'cd' to get '~' instead of /home/foo/.
 function _cd {
@@ -77,4 +76,16 @@ function _cd {
 }
 alias cd=_cd
 _cd .
-PS1='(!)-$_pwd\$ '
+PS1='$(_lrv)(!)-$_pwd'
+if (( USER_ID )); then
+    PS1="$PS1"'\$ '
+else
+    PS1="$PS1"'# '
+fi
+
+HISTSIZE=500
+HISTEDIT="$EDITOR"
+# This is the default in mksh, but we make sure in case people tempered
+# with it in their environment.
+unset HISTFILE
+true