Fix: (org-ql-search-directories-files) Error unless org-directory

Fixes #139.  Thanks to Matt Huszagh (@matthuszagh) for reporting.

Released as 0.4.7.

README.org

@@ -398,6 +398,11 @@ Expands into a call to ~org-ql-select~ with the same arguments.  For convenience
 
 /Note:/ Breaking changes may be made before version 1.0, but in the event of major changes, attempts at backward compatibility will be made with obsolescence declarations, translation of arguments, etc.  Users who need stability guarantees before 1.0 may choose to use tagged stable releases.
 
+** 0.4.7
+
+*Fixed*
++  Give a useful error if =org-ql-search-directories-files= is called without a directories argument and =org-directory= doesn't exist.  (Fixes [[https://github.com/alphapapa/org-ql/issues/139][#139]].  Thanks to [[https://github.com/matthuszagh][Matt Huszagh]] for reporting.)
+
 ** 0.4.6
 
 *Fixed*

org-ql-search.el

@@ -270,7 +270,10 @@ automatically from the query."
 
 ;;;; Functions
 
-(cl-defun org-ql-search-directories-files (&key (directories (list org-directory))
+(cl-defun org-ql-search-directories-files
+    (&key (directories (if (file-exists-p org-directory)
+                           (list org-directory)
+                         (user-error "org-ql-search-directories-files: No DIRECTORIES given, and `org-directory' doesn't exist")))
           (recurse org-ql-search-directories-files-recursive)
           (regexp org-ql-search-directories-files-regexp))
   "Return list of matching files in DIRECTORIES, a list of directory paths.

org-ql.info

@@ -63,6 +63,7 @@ Functions / Macros
 
 Changelog
 
+* 0.4.7: 047. 
 * 0.4.6: 046. 
 * 0.4.5: 045. 
 * 0.4.4: 044. 
@@ -709,6 +710,7 @@ releases.
 
 * Menu:
 
+* 0.4.7: 047. 
 * 0.4.6: 046. 
 * 0.4.5: 045. 
 * 0.4.4: 044. 
@@ -726,9 +728,22 @@ releases.
 * 0.1: 01. 
 
 
-File: README.info,  Node: 046,  Next: 045,  Up: Changelog
+File: README.info,  Node: 047,  Next: 046,  Up: Changelog
 
-5.1 0.4.6
+5.1 0.4.7
+=========
+
+*Fixed*
+   • Give a useful error if org-ql-search-directories-files is called
+     without a directories argument and org-directory doesn’t exist.
+     (Fixes #139 (https://github.com/alphapapa/org-ql/issues/139).
+     Thanks to Matt Huszagh (https://github.com/matthuszagh) for
+     reporting.)
+
+
+File: README.info,  Node: 046,  Next: 045,  Prev: 047,  Up: Changelog
+
+5.2 0.4.6
 =========
 
 *Fixed*
@@ -741,7 +756,7 @@ File: README.info,  Node: 046,  Next: 045,  Up: Changelog
 
 File: README.info,  Node: 045,  Next: 044,  Prev: 046,  Up: Changelog
 
-5.2 0.4.5
+5.3 0.4.5
 =========
 
 *Fixed*
@@ -753,7 +768,7 @@ File: README.info,  Node: 045,  Next: 044,  Prev: 046,  Up: Changelog
 
 File: README.info,  Node: 044,  Next: 043,  Prev: 045,  Up: Changelog
 
-5.3 0.4.4
+5.4 0.4.4
 =========
 
 *Fixed*
@@ -765,7 +780,7 @@ File: README.info,  Node: 044,  Next: 043,  Prev: 045,  Up: Changelog
 
 File: README.info,  Node: 043,  Next: 042,  Prev: 044,  Up: Changelog
 
-5.4 0.4.3
+5.5 0.4.3
 =========
 
 *Fixed*
@@ -775,7 +790,7 @@ File: README.info,  Node: 043,  Next: 042,  Prev: 044,  Up: Changelog
 
 File: README.info,  Node: 042,  Next: 041,  Prev: 043,  Up: Changelog
 
-5.5 0.4.2
+5.6 0.4.2
 =========
 
 *Fixed*
@@ -784,7 +799,7 @@ File: README.info,  Node: 042,  Next: 041,  Prev: 043,  Up: Changelog
 
 File: README.info,  Node: 041,  Next: 04,  Prev: 042,  Up: Changelog
 
-5.6 0.4.1
+5.7 0.4.1
 =========
 
 *Fixed*
@@ -794,7 +809,7 @@ File: README.info,  Node: 041,  Next: 04,  Prev: 042,  Up: Changelog
 
 File: README.info,  Node: 04,  Next: 032,  Prev: 041,  Up: Changelog
 
-5.7 0.4
+5.8 0.4
 =======
 
 _Note:_ The next release, 0.5, may include changes which will require
@@ -875,7 +890,7 @@ as they will be pushed to the master branch when ready.
 
 File: README.info,  Node: 032,  Next: 031,  Prev: 04,  Up: Changelog
 
-5.8 0.3.2
+5.9 0.3.2
 =========
 
 *Fixed*
@@ -888,8 +903,8 @@ File: README.info,  Node: 032,  Next: 031,  Prev: 04,  Up: Changelog
 
 File: README.info,  Node: 031,  Next: 03,  Prev: 032,  Up: Changelog
 
-5.9 0.3.1
+5.10 0.3.1
-=========
+==========
 
 *Fixed*
    • Compatibility with Org 9.2.  Thanks to Brian Leung
@@ -898,7 +913,7 @@ File: README.info,  Node: 031,  Next: 03,  Prev: 032,  Up: Changelog
 
 File: README.info,  Node: 03,  Next: 023,  Prev: 031,  Up: Changelog
 
-5.10 0.3
+5.11 0.3
 ========
 
 *Added*
@@ -963,7 +978,7 @@ File: README.info,  Node: 03,  Next: 023,  Prev: 031,  Up: Changelog
 
 File: README.info,  Node: 023,  Next: 022,  Prev: 03,  Up: Changelog
 
-5.11 0.2.3
+5.12 0.2.3
 ==========
 
 *Fixed*
@@ -973,7 +988,7 @@ File: README.info,  Node: 023,  Next: 022,  Prev: 03,  Up: Changelog
 
 File: README.info,  Node: 022,  Next: 021,  Prev: 023,  Up: Changelog
 
-5.12 0.2.2
+5.13 0.2.2
 ==========
 
 *Fixed*
@@ -984,7 +999,7 @@ File: README.info,  Node: 022,  Next: 021,  Prev: 023,  Up: Changelog
 
 File: README.info,  Node: 021,  Next: 02,  Prev: 022,  Up: Changelog
 
-5.13 0.2.1
+5.14 0.2.1
 ==========
 
 *Fixed*
@@ -994,7 +1009,7 @@ File: README.info,  Node: 021,  Next: 02,  Prev: 022,  Up: Changelog
 
 File: README.info,  Node: 02,  Next: 01,  Prev: 021,  Up: Changelog
 
-5.14 0.2
+5.15 0.2
 ========
 
 *Added*
@@ -1077,7 +1092,7 @@ File: README.info,  Node: 02,  Next: 01,  Prev: 021,  Up: Changelog
 
 File: README.info,  Node: 01,  Prev: 02,  Up: Changelog
 
-5.15 0.1
+5.16 0.1
 ========
 
 First tagged release.
@@ -1138,46 +1153,47 @@ GPLv3
 
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 End Tag Table