[#23] Rename plugins to modules

modules/history-substring-search/README.md

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+history-substring-search
+========================
+
+It implements the [Fish shell][1]'s history search feature, where the user can
+type in any part of a previously entered command and press the `UP` and `DOWN`
+arrow keys to cycle through matching commands.
+
+Settings
+--------
+
+### Case Sensitivity
+
+To enable case-sensitivity for this module only, add the following line to
+*zshrc*:
+
+    zstyle ':omz:module:history-substring-search' case-sensitive 'yes'
+
+### Highlighting
+
+If colors are enabled, _history-substring-search_ will automatically highlight
+positive results.
+
+To enable highlighting for this module only, and the following line to *zshrc*:
+
+    zstyle -t ':omz:module:history-substring-search' color 'yes'
+
+Authors
+-------
+
+*The authors of this module should be contacted via the GitHub issue tracker.*
+
+ - [Sorin Ionescu](/sorin-ionescu)
+ - [Suraj N. Kurapati](/sunaku)
+
+[1]: http://fishshell.com
+

modules/history-substring-search/init.zsh

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+#
+# Integrates history-substring-search into Oh My Zsh.
+#
+# Authors:
+#   Suraj N. Kurapati <sunaku@gmail.com>
+#   Sorin Ionescu <sorin.ionescu@gmail.com>
+#
+
+source "${0:h}/external/zsh-history-substring-search.zsh"
+
+if zstyle -t ':omz:module:history-substring-search' case-sensitive; then
+  unset HISTORY_SUBSTRING_SEARCH_GLOBBING_FLAGS
+fi
+
+if ! zstyle -t ':omz:module:history-substring-search' color; then
+  unset HISTORY_SUBSTRING_SEARCH_HIGHLIGHT_FOUND
+  unset HISTORY_SUBSTRING_SEARCH_HIGHLIGHT_NOT_FOUND
+fi
+
+bindkey -M emacs "$keyinfo[Control]P" history-substring-search-up
+bindkey -M emacs "$keyinfo[Control]N" history-substring-search-down
+bindkey -M vicmd "k" history-substring-search-up
+bindkey -M vicmd "j" history-substring-search-down
+