1 files changed, 84 insertions, 0 deletions
diff --git a/base/zsh/tipz.zsh b/base/zsh/tipz.zsh
new file mode 100644
index 0000000..bb1e224
--- /dev/null
+++ b/base/zsh/tipz.zsh
@@ -0,0 +1,84 @@
+###
+# Search the defined aliases for a match
+###
+function _tipz_find_match() {
+  local bits alias command result=""
+  local -a aliases args; args="$@"
+
+  # Load the current aliases into an array
+  local oldIFS=$IFS
+  IFS=$'\n' aliases=($(alias))
+  IFS=$oldIFS
+
+  # Loop through each of the aliases
+  for line in "${aliases[@]}"; do
+    # Split the line on '=' to separate the command
+    # and its alias
+    bits=("${(s/=/)line}")
+    alias=$bits[1]
+    command=$bits[2]
+
+    # Create a regex that finds an exact match for
+    # the current argument string
+    args="${(@)args[@]}"
+    local pattern=$'^[\'\"]?'${args//([\{\}\(\)\[\]\*\?\:\\\.\|])/\\\$1}$'[\'\"]?$'
+
+    # Check if the command matches the regex
+    if [[ "$command" =~ $pattern ]]; then
+      # Ensure that the longest matching command is stored
+      if [[ ${#command} > ${#result} ]]; then
+        result=$alias
+      fi
+    fi
+  done
+
+  # If a result has been found, output it
+  if [[ -n $result ]]; then
+    echo $result
+    return 0
+  fi
+
+  return 1
+}
+
+###
+# Search for alias tips for the currently executing command
+###
+function _tipz_process {
+  local -a cmd; cmd=($@)
+  integer i=$(( ${#cmd} + 1 ))
+
+  # Loop for the length of the argument list, knocking
+  # an argument from the end of the list each time, and
+  # then using the remaining arguments to search for aliases
+  while [[ $i > 0 ]]; do
+    # Check the current string for a match
+    result=$(_tipz_find_match "${(@)cmd:0:$i}")
+
+    # If the search exited successfully,
+    # output the tip to the user
+    if [[ $? -eq 0 ]]; then
+      print -P "%B%F{8}Alias tip: %b$result ${(@)cmd:$i}%f"
+      return 0
+    fi
+
+    # Decrement the counter
+    i=$(( i - 1 ))
+  done
+
+  return 1
+}
+
+###
+# A small function to filter out strange arguments
+# sent from the add-zsh-hook preexec hook
+###
+function _tipz_prexec() {
+  _tipz_process $(echo $1)
+}
+
+###
+# Register the preexec hook
+###
+autoload -Uz add-zsh-hook
+add-zsh-hook preexec _tipz_prexec