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 <corbet@lwn.net>
diff --git a/scripts/sphinx-pre-install b/scripts/sphinx-pre-install
index b5f9fd5..fe92020d 100755
--- a/scripts/sphinx-pre-install
+++ b/scripts/sphinx-pre-install
@@ -259,7 +259,7 @@
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;
}
