[LyX/master] Cmake doc creation: Python is choking on '\\'

[Kornel Benko]

commit 65deb30c24b6decb24eb91ad148de17f2de75315
Author: Kornel Benko <kor...@lyx.org>
Date:   Tue Oct 17 17:12:29 2017 +0200

    Cmake doc creation: Python is choking on '\\'
---
 development/cmake/doc/ReplaceValues.cmake |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)

diff --git a/development/cmake/doc/ReplaceValues.cmake 
b/development/cmake/doc/ReplaceValues.cmake
index 5a8f754..77026cb 100644
--- a/development/cmake/doc/ReplaceValues.cmake
+++ b/development/cmake/doc/ReplaceValues.cmake
@@ -9,10 +9,12 @@ foreach(_v LYX_USERDIR_VER LYX_DIR_VER REL_DIR SOURCE CREATED 
LYX_PYTHON_EXECUTA
   endif()
 endforeach()
 
+set(originstring "origin\ unavailable=origin\ /systemlyxdir/doc/${REL_DIR}")
+#message(STATUS "originstring=${originstring}")
 execute_process(COMMAND ${LYX_PYTHON_EXECUTABLE} 
"${TOP_CMAKE_PATH}/doc/ReplaceValues.py"
   "LYX_USERDIR_VER=${LYX_USERDIR_VER}"
   "LYX_DIR_VER=${LYX_DIR_VER}"
-  "\\origin\ unavailable=\\origin\ /systemlyxdir/doc/${REL_DIR}"
+  ${originstring}
   "${TOP_SRC_DIR}/lib/doc/${SOURCE}"
   OUTPUT_FILE "${CREATED}"
   RESULT_VARIABLE _err