.shellrc: test if completion already exists

diff --git a/.shellrc b/.shellrc
index 970360f14a4d87131e2881b4957f79e583f6c62a..38c547e2c67b7c009be3083f807fb48ba4ff80ff 100644 (file)
--- a/.shellrc
+++ b/.shellrc
@@ -33,19 +33,35 @@ case "$SHELL" in
       fi
    fi
 
-   if [ -z "$BASH_COMPLETION_COMPAT_DIR" ]; then
-      complete -A command -o default man
+   has_completion() { return 0; }
+   if [ "$SHELL" = /bin/bash ]; then
+      if [ -d /etc/bash_completion.d -o -d /usr/share/bash-completion/completions ]; then
+         has_completion() { [ -r /etc/bash_completion.d/$1 -o -r /usr/share/bash-completion/completions/$1 ]; }
+      fi
+   elif [ "$SHELL" = /usr/local/bin/bash ]; then
+      if [ -d /usr/local/etc/bash_completion.d ]; then
+         has_completion() { [ -r /usr/local/etc/bash_completion.d/$1 ]; }
+      fi
    fi
 
-   complete -A command -o default builtin cgmem_nice command dbus-launch exec \
-      killall nice nohup pidof pidOf KillAll pgrep pkill psg pswg su sudo time \
-      whence whereis which xargs
-   complete -A hostname dig host nslookup nc netcat nmap p ping ping6 socat \
+   for cmd in builtin cgmem_nice command dbus-launch exec \
+      killall man nice nohup pidof pidOf KillAll pgrep pkill psg pswg su sudo \
+      time whence whereis which xargs; do
+         ! has_completion $cmd && complete -A command -o default $cmd
+   done
+
+   for cmd in dig host nslookup nc netcat nmap p ping ping6 socat \
       telnet t tt \
       tcptraceroute tcptraceroute6 tracert tracert6 traceroute traceroute6 \
-      whois wget wget-m wget-wrapper ww
-   complete -A hostname -o default distribute ftp lftp r rsync \
-      s scp ssh smbclient tcpdump tshark wireshark
+      whois wget wget-m wget-wrapper ww; do
+         ! has_completion $cmd && complete -A hostname $cmd
+   done
+
+   for cmd in distribute ftp lftp r rsync \
+      s scp ssh smbclient tcpdump tshark wireshark; do
+         ! has_completion $cmd && complete -A hostname -o default $cmd;
+   done
+
    complete -A job bg fg j jobs wait
    complete -A variable unset