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zsh/.oh-my-zsh/plugins/grc/README.md

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+# Generic Colouriser plugin
+
+This plugin adds wrappers for commands supported by [Generic Colouriser](https://github.com/garabik/grc):
+
+To use it, add `grc` to the plugins array in your zshrc file:
+
+```zsh
+plugins=(... grc)
+```
+
+## Commands
+
+The plugin sources the bundled alias generator from the installation, available at `/etc/grc.zsh`.
+The complete list of wrapped commands may vary depending on the installed version of `grc`, look
+at the file mentioned above (`/etc/grc.zsh`) to see which commands are wrapped.

zsh/.oh-my-zsh/plugins/grc/grc.plugin.zsh

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+#!/usr/bin/env zsh
+
+# common grc.zsh paths
+files=(
+  /etc/grc.zsh            # default
+  /usr/local/etc/grc.zsh  # homebrew
+)
+
+# verify the file is readable and source it
+for file in $files; do
+  if [[ -r "$file" ]]; then
+    source "$file"
+    break
+  fi
+done
+
+unset file files