[elpa] elpa 2388815 07/35: Change test for PDF Tools availability

[Tassilo Horn]

branch: elpa
commit 23888157e7152c2b18b5c5b516a8636ae2a97f9b
Author: Mosè Giordano <address@hidden>
Commit: Mosè Giordano <address@hidden>

    Change test for PDF Tools availability
    
    * tex.el (TeX-pdf-tools-sync-view): Change test for PDF Tools
      availability, in order to make it possible to postpone loading of the
      package, for example when using "use-package".  Fixes bug#23803.
---
 tex.el |    7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/tex.el b/tex.el
index 9424d3f..6c302bb 100644
--- a/tex.el
+++ b/tex.el
@@ -1262,8 +1262,11 @@ DE is the name of the desktop environment, either 
\"gnome\" or
 If `TeX-source-correlate-mode' is disabled, only find and pop to
 the output PDF file.  Used by default for the PDF Tools viewer
 entry in `TeX-view-program-list-builtin'."
-  (unless (featurep 'pdf-tools)
-    (error "PDF Tools are not installed"))
+  ;; Make sure `pdf-tools' is at least in the `load-path', but the user must
+  ;; take care of properly loading and installing the package.  We used to test
+  ;; "(featurep 'pdf-tools)", but that doesn't play well with deferred loading.
+  (unless (fboundp 'pdf-tools-install)
+    (error "PDF Tools are not available"))
   (unless TeX-PDF-mode
     (error "PDF Tools only work with PDF output"))
   (add-hook 'pdf-sync-backward-redirect-functions