Added check_com from the grml zshrc

1 files changed, 31 insertions, 0 deletions

diff --git a/etc/functions/check_com b/etc/functions/check_com
new file mode 100644
index 0000000..b631e95
--- /dev/null
+++ b/etc/functions/check_com
@@ -0,0 +1,31 @@
+## vim:ft=zsh
+## Check for a command/function
+## Taken from the grml zshrc - http://grml.org
+local -i comonly
+
+if [[ ${1} == '-c' ]] ; then
+    (( comonly = 1 ))
+    shift
+else
+    (( comonly = 0 ))
+fi
+
+if (( ${#argv} != 1 )) ; then
+    printf 'usage: check_com [-c] <command>\n' >&2
+    return 1
+fi
+
+if (( comonly > 0 )) ; then
+    [[ -n ${commands[$1]}  ]] && return 0
+    return 1
+fi
+
+if   [[ -n ${commands[$1]}    ]] \
+  || [[ -n ${functions[$1]}   ]] \
+  || [[ -n ${aliases[$1]}     ]] \
+  || [[ -n ${reswords[(r)$1]} ]] ; then
+
+    return 0
+fi
+
+return 1