Add a 'folders-exclude' option

Added a 'folders-exclude' option that allows removing selected folders
from the directory list sidebar. My motivating example was that removing
a single folder from the list using Golang regexes seemed pretty hard,
so this is a better way to do it. The excluded folders list is included
in the man page.

1 files changed, 7 insertions, 0 deletions

diff --git a/doc/aerc-config.5.scd b/doc/aerc-config.5.scd
index 2bd3076..af64ad6 100644
--- a/doc/aerc-config.5.scd
+++ b/doc/aerc-config.5.scd
@@ -376,6 +376,13 @@ Note that many of these configuration options are written for you, such as
 
 	Default: all folders
 
+*folders-exclude*
+	Specifies the comma separated list of folders to exclude from the sidebar.
+	Names prefixed with ~ are interpreted as regular expressions.
+	Note that this overrides anything from *folders*.
+
+	Default: no folders
+
 *folders-sort*
 	Specifies a comma separated list of folders to be shown at the top of the
 	list in the provided order. Remaining folders will be sorted alphabetically.