Add Zsh syntax highlighting script

zsh-syntax-highlighting.zsh

@@ -0,0 +1,88 @@
+#!/usr/bin/env zsh
+# Copyleft 2010 zsh-syntax-highlighting contributors
+# All wrongs reserved.
+
+# Token types styles.
+# See http://zsh.sourceforge.net/Doc/Release/Zsh-Line-Editor.html#SEC135
+ZLE_RESERVED_WORD_STYLE='fg=yellow,bold'
+ZLE_ALIAS_STYLE='fg=magenta,bold'
+ZLE_BUILTIN_STYLE='fg=cyan,bold'
+ZLE_FUNCTION_STYLE='fg=blue,bold'
+ZLE_COMMAND_STYLE='fg=green,bold'
+ZLE_COMMAND_UNKNOWN_TOKEN_STYLE='fg=red,bold'
+
+ZLE_HYPHEN_CLI_OPTION='fg=yellow,bold'
+ZLE_DOUBLE_HYPHEN_CLI_OPTION='fg=green,bold'
+ZLE_SINGLE_QUOTED='fg=magenta,bold'
+ZLE_DOUBLE_QUOTED='fg=red,bold'
+ZLE_BACK_QUOTED='fg=cyan,bold'
+ZLE_GLOBING='fg=blue,bold'
+
+ZLE_DEFAULT='fg=white,bold'
+
+ZLE_TOKENS_FOLLOWED_BY_COMMANDS=('|' '||' ';' '&' '&&' 'sudo' 'start' 'time' 'strace' '§')
+
+# Recolorize the current ZLE buffer.
+colorize-zle-buffer() {
+  region_highlight=()
+  colorize=true
+  start_pos=0
+  for arg in ${(z)BUFFER}; do
+    ((start_pos+=${#BUFFER[$start_pos+1,-1]}-${#${BUFFER[$start_pos+1,-1]## #}}))
+    ((end_pos=$start_pos+${#arg}))
+    if $colorize; then
+      colorize=false
+      res=$(LC_ALL=C builtin type $arg 2>/dev/null)
+      case $res in
+        *'reserved word'*)  style=$ZLE_RESERVED_WORD_STYLE;;
+        *'an alias'*)       style=$ZLE_ALIAS_STYLE;;
+        *'shell builtin'*)  style=$ZLE_BUILTIN_STYLE;;
+        *'shell function'*) style=$ZLE_FUNCTION_STYLE;;
+        *"$cmd is"*)        style=$ZLE_COMMAND_STYLE;;
+        *)                  style=$ZLE_COMMAND_UNKNOWN_TOKEN_STYLE;;
+      esac
+    else
+	case $arg in
+	    '--'*) style=$ZLE_DOUBLE_HYPHEN_CLI_OPTION;;
+	    '-'*) style=$ZLE_HYPHEN_CLI_OPTION;;
+	    "'"*"'") style=$ZLE_SINGLE_QUOTED;;
+	    '"'*'"') style=$ZLE_DOUBLE_QUOTED;;
+	    '`'*'`') style=$ZLE_BACK_QUOTED;;
+	    *"*"*) style=$ZLE_GLOBING;;
+	    *) style=$ZLE_DEFAULT;;
+	esac
+    fi
+    region_highlight+=("$start_pos $end_pos $style")
+    [[ ${${ZLE_TOKENS_FOLLOWED_BY_COMMANDS[(r)${arg//|/\|}]}:+yes} = 'yes' ]] && colorize=true
+    start_pos=$end_pos
+  done
+}
+
+# Bind the function to ZLE events.
+ZLE_COLORED_FUNCTIONS=(
+    self-insert
+    delete-char
+    backward-delete-char
+    kill-word
+    backward-kill-word
+    up-line-or-history
+    down-line-or-history
+    beginning-of-history
+    end-of-history
+    undo
+    redo
+    yank
+)
+
+for f in $ZLE_COLORED_FUNCTIONS; do
+    eval "$f() { zle .$f && colorize-zle-buffer } ; zle -N $f"
+done
+
+# Expand or complete hack
+
+# create an expansion widget which mimics the original "expand-or-complete" (you can see the default setup using "zle -l -L")
+zle -C orig-expand-or-complete .expand-or-complete _main_complete
+
+# use the orig-expand-or-complete inside the colorize function (for some reason, using the ".expand-or-complete" widget doesn't work the same)
+expand-or-complete() { builtin zle orig-expand-or-complete && colorize-zle-buffer }
+zle -N expand-or-complete