From a245f850bc4f4f209e759b6eab5b48c0693e38af Mon Sep 17 00:00:00 2001
From: Brad King <brad.king@kitware.com>
Date: Tue, 26 Sep 2017 12:56:33 -0400
Subject: FindMatlab: Fix extraction of quoted version number

The version string in recent Matlab versions has changed.
Now the version number is inside two `'`.

Patch-by: nama on gitlab.kitware.com
Fixes: #17308
---
 Modules/FindMatlab.cmake | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/Modules/FindMatlab.cmake b/Modules/FindMatlab.cmake
index 7493281..d287688 100644
--- a/Modules/FindMatlab.cmake
+++ b/Modules/FindMatlab.cmake
@@ -681,12 +681,12 @@ function(matlab_get_version_from_matlab_run matlab_binary_program matlab_list_ve
 
     string(SUBSTRING ${_matlab_version_from_cmd} ${index} -1 substring_ans)
     string(
-      REGEX MATCHALL "ans[\r\n\t ]*=[\r\n\t ]*([0-9]+(\\.[0-9]+)?)"
+      REGEX MATCHALL "ans[\r\n\t ]*=[\r\n\t ]*'?([0-9]+(\\.[0-9]+)?)"
       matlab_versions_regex
       ${substring_ans})
     foreach(match IN LISTS matlab_versions_regex)
       string(
-        REGEX MATCH "ans[\r\n\t ]*=[\r\n\t ]*(([0-9]+)(\\.([0-9]+))?)"
+        REGEX MATCH "ans[\r\n\t ]*=[\r\n\t ]*'?(([0-9]+)(\\.([0-9]+))?)"
         current_match ${match})
 
       list(APPEND matlab_list_of_all_versions_tmp ${CMAKE_MATCH_1})
-- 
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