subtree(users/wpcarro): docking briefcase at '24f5a642' r/3226

git-subtree-dir: users/wpcarro
git-subtree-mainline: 464bbcb15c09813172c79820bcf526bb10cf4208
git-subtree-split: 24f5a642af3aa1627bbff977f0a101907a02c69f
Change-Id: I6105b3762b79126b3488359c95978cadb3efa789

1 files changed, 49 insertions, 0 deletions

diff --git a/users/wpcarro/emacs/.emacs.d/wpc/symbol.el b/users/wpcarro/emacs/.emacs.d/wpc/symbol.el
new file mode 100644
index 000000000000..39450caff59e
--- /dev/null
+++ b/users/wpcarro/emacs/.emacs.d/wpc/symbol.el
@@ -0,0 +1,49 @@
+;;; symbol.el --- Library for working with symbols -*- lexical-binding: t -*-
+
+;; Author: William Carroll <wpcarro@gmail.com>
+;; Version: 0.0.1
+;; URL: https://git.wpcarro.dev/wpcarro/briefcase
+;; Package-Requires: ((emacs "24"))
+
+;;; Commentary:
+;; Library for working with symbols.
+
+;;; Code:
+
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+;; Dependencies
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+
+(require 'string)
+
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+;; Library
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+
+;; Symbols
+(defun symbol-as-string (callback x)
+  "Treat the symbol, X, as a string while applying CALLBACK to it.
+Coerce back to a symbol on the way out."
+  (->> x
+       #'symbol-name
+       callback
+       #'intern))
+
+(defun symbol-to-string (x)
+  "Map `X' into a string."
+  (string-<-symbol x))
+
+(defun symbol-hookify (x)
+  "Append \"-hook\" to X when X is a symbol."
+  (symbol-as-string #'string-hookify x))
+
+(defun symbol-ensure-hookified (x)
+  "Ensure that X has \"-hook\" appended to it when X is a symbol."
+  (symbol-as-string #'string-ensure-hookified x))
+
+(defun symbol-instance? (x)
+  "Return t if X is a symbol."
+  (symbolp x))
+
+(provide 'symbol)
+;;; symbol.el ends here