[LyX/master] ePub: quote all path names of the command

[Stephan Witt]

commit f55efc6951038949e4b455e19f31a2ef07ef93c5
Author: Stephan Witt <switt at lyx.org>
Date:   Sun Feb 7 12:42:17 2021 +0100

    ePub: quote all path names of the command
---
 lib/scripts/docbook2epub.py |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/lib/scripts/docbook2epub.py b/lib/scripts/docbook2epub.py
index 9354b83..f5711be 100644
--- a/lib/scripts/docbook2epub.py
+++ b/lib/scripts/docbook2epub.py
@@ -39,7 +39,7 @@ if __name__ == '__main__':
     xslt = script_folder + 'docbook/epub3/chunk.xsl'
     saxon_jar = script_folder + 'scripts/saxon6.5.5.jar'
     saxon_params = 'base.dir=%s' % output_dir
-    command = '"' + java_path + '" -jar "' + saxon_jar + '" ' + input + ' ' + xslt + ' ' + saxon_params
+    command = '"' + java_path + '" -jar "' + saxon_jar + '" "' + input + '" "' + xslt + '" "' + saxon_params + '"'
 
     print('XSLT style sheet to use:')
     print(xslt)