Fix: (org-ql-find) Go to base buffer if possible

Use the base buffer if it has one, because if we run the search from
an indirect buffer, it's likely already narrowed to a different entry,
and making an indirect buffer from that one would end up with a
restriction that would likely hide the selected entry.

README.org

@@ -555,7 +555,9 @@ Simple links may also be written manually in either sexp or non-sexp form, like:
 
 ** 0.8.4-pre
 
-Nothing new yet.
+*Fixes*
+
++ Command ~org-ql-find~ goes to the selected entry in the base buffer (rather than potentially an indirect buffer, whose narrowing could leave the selected entry hidden.  The nuances around going to entries in buffers that may be indirect and/or narrowed are surprisingly complicated.  Hopefully this is the last fix).
 
 ** 0.8.3
 

org-ql-find.el

@@ -75,7 +75,8 @@ single predicate)."
                   :query-prefix query-prefix
                   :query-filter query-filter
                   :prompt prompt)))
-    (set-buffer (marker-buffer marker))
+    (set-buffer (or (buffer-base-buffer (marker-buffer marker))
+                    (marker-buffer marker)))
     (pop-to-buffer (current-buffer) org-ql-find-display-buffer-action)
     (without-restriction
       (goto-char marker)

org-ql.info

@@ -1074,7 +1074,13 @@ File: README.info,  Node: 084-pre,  Next: 083,  Up: Changelog
 5.1 0.8.4-pre
 =============
 
-Nothing new yet.
+*Fixes*
+
+   • Command ‘org-ql-find’ goes to the selected entry in the base buffer
+     (rather than potentially an indirect buffer, whose narrowing could
+     leave the selected entry hidden.  The nuances around going to
+     entries in buffers that may be indirect and/or narrowed are
+     surprisingly complicated.  Hopefully this is the last fix).
 
 
 File: README.info,  Node: 083,  Next: 082,  Prev: 084-pre,  Up: Changelog
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