docs: sphinx-pre-install: don't barf on beta Sphinx releases

sphinx-pre-install is picky when it comes to parsing sphinx versions; it failed when run with sphinx 4.0.0b1. Tweak the regex to tolerate a trailing "bN" on the version number. Signed-off-by: Jonathan Corbet <[email protected]>
majek · Apr 15, 2021 · e9dfeed · e9dfeed
1 parent f9bbc12
commit e9dfeed
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/scripts/sphinx-pre-install b/scripts/sphinx-pre-install
@@ -259,7 +259,7 @@ sub get_sphinx_version($)
 
 	open IN, "$cmd --version 2>&1 |";
 	while (<IN>) {
-		if (m/^\s*sphinx-build\s+([\d\.]+)(\+\/[\da-f]+)?$/) {
+		if (m/^\s*sphinx-build\s+([\d\.]+)((\+\/[\da-f]+)|(b\d+))?$/) {
 			$ver=$1;
 			last;
 		}