src/conf: Fix `base_url()` for top-level files

The documented `src/file.txt -> .` case in the comment 2 lines above.

1 files changed, 1 insertions, 0 deletions

diff --git a/src/conf b/src/conf
index 453f755..5d879fd 100755
--- a/src/conf
+++ b/src/conf
@@ -110,6 +110,7 @@ base_url() {
 	# src/sub/dirs/file.txt -> ../..
 	# src/file.txt -> .
 	printf '%s/\n' "$(dirname -- "$UNPREFIXED")" |
+		sed 's|^\./$|.|' |
 		sed \
 			-e 's|[^/]*/|../|g' \
 			-e 's|/$||'