Initial commit.

LICENSE

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+Copyright (c) 2014 Soheil Rashidi
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

README.md

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+# zsh-vi-search
+Adds support for searching the current line (in normal vi mode) to zsh.
+
+## Install
+Download [zsh-vi-search.zsh](https://raw.githubusercontent.com/soheilpro/zsh-vi-search/master/src/zsh-vi-search.zsh) and source it somewhere in your .zshrc file.
+
+## Usage
++ <kbd>/</kbd> Search forward
++ <kbd>?</kbd> Search backward
++ <kbd>n</kbd> Repeat last search
++ <kbd>N</kbd> Repeat last search in the opposite direction
+
+## Version History
++ 1.0
+	+ Initial release.
+
+## Author
+Soheil Rashidi
+
++ http://soheilrashidi.com
++ http://twitter.com/soheilpro
++ http://github.com/soheilpro
+
+## Copyright and License
+Copyright 2016 Soheil Rashidi
+
+Licensed under the The MIT License (the "License");
+you may not use this work except in compliance with the License.
+You may obtain a copy of the License in the LICENSE file, or at:
+
+http://www.opensource.org/licenses/mit-license.php
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.

src/zsh-vi-search.zsh

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+autoload -U read-from-minibuffer
+
+function _index-of {
+  local STR=$1
+  local STRLEN=${#STR}
+  local SUBSTR=$2
+  local SUBSTRLEN=${#SUBSTR}
+  local START=${3:-0}
+  local DIRECTION=${4:-1}
+
+  [[ $STRLEN -ge 0 ]] || return 1
+  [[ $SUBSTRLEN -ge 0 ]] || return 2
+  [[ $START -ge 0 ]] || return 3
+  [[ $START -lt $STRLEN ]] || return 4
+  [[ $DIRECTION -eq 1 || $DIRECTION -eq -1 ]] || return 5
+
+  for ((INDEX = $START; INDEX >= 0 && INDEX < $STRLEN; INDEX = INDEX + $DIRECTION)); do
+    if [[ "${STR:$INDEX:$SUBSTRLEN}" == "$SUBSTR" ]]; then
+      echo $INDEX
+      return
+    fi
+  done
+
+  return -1
+}
+
+function _vi-search-forward {
+  read-from-minibuffer
+  INDEX=$(_index-of $BUFFER $REPLY $CURSOR) && CURSOR=$INDEX || INDEX=$(_index-of $BUFFER $REPLY 0) && CURSOR=$INDEX
+  export VISEARCHSTR=$REPLY
+  export VISEARCHDIRECTION=1
+}
+
+function _vi-search-forward-repeat {
+  INDEX=$(_index-of $BUFFER $VISEARCHSTR $(($CURSOR + 1))) && CURSOR=$INDEX || INDEX=$(_index-of $BUFFER $VISEARCHSTR 0) && CURSOR=$INDEX
+}
+
+function _vi-search-backward {
+  read-from-minibuffer
+  INDEX=$(_index-of $BUFFER $REPLY $CURSOR -1) && CURSOR=$INDEX || INDEX=$(_index-of $BUFFER $REPLY $((${#BUFFER} - 1)) -1) && CURSOR=$INDEX
+  export VISEARCHSTR=$REPLY
+  export VISEARCHDIRECTION=-1
+}
+
+function _vi-search-backward-repeat {
+  INDEX=$(_index-of $BUFFER $VISEARCHSTR $(($CURSOR - 1)) -1) && CURSOR=$INDEX || INDEX=$(_index-of $BUFFER $VISEARCHSTR $((${#BUFFER} - 1)) -1) && CURSOR=$INDEX
+}
+
+function _vi-search-repeat {
+  if [[ $VISEARCHDIRECTION -eq 1 ]]; then
+    _vi-search-forward-repeat
+  else
+    _vi-search-backward-repeat
+  fi
+}
+
+function _vi-search-repeat-reverse {
+  if [[ $VISEARCHDIRECTION -eq 1 ]]; then
+    _vi-search-backward-repeat
+  else
+    _vi-search-forward-repeat
+  fi
+}
+
+zle -N vi-search-backward _vi-search-backward
+zle -N vi-search-forward _vi-search-forward
+zle -N vi-search-repeat _vi-search-repeat
+zle -N vi-search-repeat-reverse _vi-search-repeat-reverse
+
+bindkey -M vicmd '?' vi-search-backward
+bindkey -M vicmd '/' vi-search-forward
+bindkey -M vicmd 'n' vi-search-repeat
+bindkey -M vicmd 'N' vi-search-repeat-reverse