From b08b66f33ea11c9d6218cd26f7a636d972a7b0f2 Mon Sep 17 00:00:00 2001
From: Kyle Meyer <kyle@kyleam.com>
Date: Fri, 14 Mar 2014 00:36:01 -0400
Subject: ENH: Allow customization of PDF file separator

---
 bog-tests.el | 14 ++++++++++++++
 bog.el       | 20 +++++++++++++++-----
 2 files changed, 29 insertions(+), 5 deletions(-)

diff --git a/bog-tests.el b/bog-tests.el
index 506cd27..f83c3af 100644
--- a/bog-tests.el
+++ b/bog-tests.el
@@ -1,5 +1,6 @@
 (require 'ert)
 (require 'org)
+(require 'dash)
 (require 'bog)
 
 ;; Modified from magit-tests.el.
@@ -169,6 +170,19 @@
      (should-not (file-exists-p (expand-file-name
                                  (concat "one.pdf") bog-pdf-directory))))))
 
+(ert-deftest bog-pdf-citekeys-multiple-variants ()
+  (bog-tests--with-temp-dir
+   (let* ((bog-pdf-directory (expand-file-name "pdfs"))
+          (citekey "name2010word")
+          (variants (--map (concat citekey it ".pdf")
+                           '("" "_0" "-supplement")))
+          found-files)
+     (make-directory bog-pdf-directory)
+     (--each variants
+       (write-region "" nil (expand-file-name it bog-pdf-directory)))
+     (setq files-found (bog-citekey-pdfs citekey))
+     (should (= (length files-found) 3)))))
+
 
 ;;; BibTeX functions
 
diff --git a/bog.el b/bog.el
index 987087c..67af286 100644
--- a/bog.el
+++ b/bog.el
@@ -144,6 +144,12 @@ alternative is `ido-completing-read'."
   :group 'bog
   :type 'string)
 
+(defcustom bog-pdf-file-name-separators '("-" "_")
+  "Characters allowed to follow the citekey in PDF file names.
+When `bog-find-citekey-pdf' is run on <citekey>, it will find
+files with the format <citekey><sep>*.pdf, where <sep> is one of
+the characters in `bog-pdf-file-name-separators'.")
+
 (defcustom bog-web-search-url
   "http://scholar.google.com/scholar?q=%s"
   "URL to use for CITEKEY search.
@@ -244,11 +250,7 @@ text under point if it matches `bog-citekey-format' or using
 
 (defun bog-open-citekey-pdf (citekey)
   (let* (citekey-pdf
-         (citekey-pdfs
-          (--mapcat (file-expand-wildcards
-                     (concat (file-name-as-directory bog-pdf-directory)
-                             citekey it ".pdf"))
-                    '("" "-*")))
+         (citekey-pdfs (bog-citekey-pdfs citekey))
          (choices (-map 'file-name-nondirectory citekey-pdfs))
          (num-choices (length choices)))
     (cond
@@ -263,6 +265,14 @@ text under point if it matches `bog-citekey-format' or using
                               bog-pdf-directory))))
     (start-process "bog-pdf" nil bog-pdf-opener citekey-pdf)))
 
+(defun bog-citekey-pdfs (citekey)
+  (let* ((patterns (--map (concat it "*") bog-pdf-file-name-separators))
+         (patterns (cons "" patterns)))
+    (--mapcat (file-expand-wildcards
+               (concat (file-name-as-directory bog-pdf-directory)
+                       citekey it ".pdf"))
+              patterns)))
+
 ;;;###autoload
 (defun bog-rename-staged-pdf-to-citekey ()
   "Rename PDF in `bog-stage-directory' to `bog-pdf-directory'/<citekey>.pdf.
-- 
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