Merge pull request #639 from CodeFalling/add-percol

add plugin:percol

plugins/available/percol.plugin.bash

@@ -0,0 +1,44 @@
+cite about-plugin
+about-plugin 'Search&Select history and fasd with percol'
+
+# Notice
+## You have to upgrade bash to bash 4.x on Mac OS X.
+## http://stackoverflow.com/questions/16416195/how-do-i-upgrade-bash-in-mac-osx-mountain-lion-and-set-it-the-correct-path
+
+# Install
+## (sudo) pip install percol
+## bash-it enable percol
+## optional: bash-it enable fasd
+
+# Usage
+## C-r to search&select from history
+## zz to search&select from fasd
+
+_replace_by_history() {
+    if command -v tac>/dev/null; then
+        alias _tac=tac
+    else
+        alias _tac="tail -r"
+    fi
+    local l=$(HISTTIMEFORMAT= history | _tac | sed -e 's/^\ *[0-9]*\ *//' | percol --query "$READLINE_LINE")
+    READLINE_LINE="$l"
+    READLINE_POINT=${#l}
+}
+
+
+if command -v percol>/dev/null; then
+    local current_version=${BASH_VERSION%%[^0-9]*}
+    if [ $current_version -lt 4 ]; then
+       echo "Warning:You have to upgrade bash to bash 4.x to use percol plugin."
+    else
+        bind -x '"\C-r": _replace_by_history'
+
+        # bind zz to percol if fasd enable
+        if command -v fasd>/dev/null; then
+            zz(){
+                local l=$(fasd -d | awk '{print $2}' | percol)
+                cd $l
+            }
+        fi
+    fi
+fi