refactor all history modifications into discrete plugins

clean_files.txt

@@ -24,6 +24,12 @@ hooks
 .gitattributes
 lint_clean_files.sh
 
+# plugins
+#
+plugins/available/history.plugin.bash
+plugins/available/history-search.plugin.bash
+plugins/available/history-substring-search.plugin.bash
+
 # themes
 #
 themes/agnoster

lib/history.bash

@@ -1,12 +0,0 @@
-#!/usr/bin/env bash
-
-# Bash History Handling
-
-shopt -s histappend                                      # append to bash_history if Terminal.app quits
-export HISTCONTROL=${HISTCONTROL:-ignorespace:erasedups} # erase duplicates; alternative option: export HISTCONTROL=ignoredups
-export HISTSIZE=${HISTSIZE:-5000}                        # resize history size
-export AUTOFEATURE=${AUTOFEATURE:-true autotest}         # Cucumber / Autotest integration
-
-function rh {
-  history | awk '{a[$2]++}END{for(i in a){print a[i] " " i}}' | sort -rn | head
-}

plugins/available/history-search.plugin.bash

@@ -0,0 +1,9 @@
+cite about-plugin
+about-plugin 'search history using the prefix already entered'
+
+# enter a few characters and press UpArrow/DownArrow
+# to search backwards/forwards through the history
+if [[ ${SHELLOPTS} =~ (vi|emacs) ]]; then
+	bind '"\e[A":history-search-backward'
+	bind '"\e[B":history-search-forward'
+fi

plugins/available/history-substring-search.plugin.bash

@@ -0,0 +1,9 @@
+cite about-plugin
+about-plugin 'search history using the substring already entered'
+
+# enter a few characters and press UpArrow/DownArrow
+# to search backwards/forwards through the history
+if [[ ${SHELLOPTS} =~ (vi|emacs) ]]; then
+	bind '"\e[A":history-substring-search-backward'
+	bind '"\e[B":history-substring-search-forward'
+fi

plugins/available/history.plugin.bash

@@ -1,9 +1,11 @@
 cite about-plugin
-about-plugin 'history manipulation'
+about-plugin 'improve history handling with sane defaults'
-# enter a few characters and press UpArrow/DownArrow
+
-# to search backwards/forwards through the history
+# append to bash_history if Terminal.app quits
-if [[ ${SHELLOPTS} =~ (vi|emacs) ]]
+shopt -s histappend
-then
+
-    bind '"":history-search-backward'
+# erase duplicates; alternative option: export HISTCONTROL=ignoredups
-    bind '"":history-search-forward'
+export HISTCONTROL=${HISTCONTROL:-ignorespace:erasedups}
-fi
+
+# resize history to 100x the default (500)
+export HISTSIZE=${HISTSIZE:-50000}