Universal fzf loader on Arch and Debian

* tries loading on both distro locations
* only overrides fzf-history-widget if it was defined previously

.zshrc

@@ -96,15 +96,20 @@ xsource /usr/share/zsh/site-functions/git-flow-completion.zsh
 xsource /usr/share/doc/pkgfile/command-not-found.zsh
 
 
-# fzf history search with support for Ctrl+E history edit like with zaw widget before
+# default is 40%, and that is too much, limit to less lines
-if [[ -f /usr/share/fzf/key-bindings.zsh && -f /usr/share/fzf/completion.zsh ]]; then
+FZF_TMUX_HEIGHT=6
-    source /usr/share/fzf/key-bindings.zsh
+# other shortcuts already use reverse, except history search for some reason..
-    source /usr/share/fzf/completion.zsh
+FZF_CTRL_R_OPTS="--reverse"
-    # default is 40%, and that is too much, limit to less lines
+
-    FZF_TMUX_HEIGHT=6
+# Arch Linux
-    # other shortcuts already use reverse, except history search for some reason..
+xsource /usr/share/fzf/key-bindings.zsh
-    FZF_CTRL_R_OPTS="--reverse"
+xsource /usr/share/fzf/completion.zsh
 
+# Debian
+xsource /usr/share/doc/fzf/examples/key-bindings.zsh
+
+# fzf history search with support for Ctrl+E history edit like with zaw widget before
+if typeset -f fzf-history-widget > /dev/null; then
     # Copied form key-bindings.zsh
     # CTRL-R - Paste the selected command from history into the command line
     fzf-history-widget() {