page_title: fall back to page's path name when title cannot be determined

diff --git a/tools.sh b/tools.sh
index dfa4594576d9538105afbdc7a2c9eabdded5ec92..248a2542b2a86df0d57877cc8330a150a437d88f 100755 (executable)
--- a/tools.sh
+++ b/tools.sh
@@ -189,23 +189,26 @@ has_tag() {
 page_title() {
   local mdfile PAGE_TITLE
 
-  if  mdfile="$(mdfile "${1:-${PATH_INFO%/*}}")"; then
-    PAGE_TITLE="$(
-      sed -nE '
-        s;^%title[ \t]+([[:graph:]][[:print:]]+)\r?$;\1;p; tQ;
-        b; :Q q;
-      ' "$mdfile"
-    )"
-    [ ! "${PAGE_TITLE}" ] && PAGE_TITLE="$(
-      MD_MACROS="" md <"$mdfile" \
-      | sed -nE '
-        s;^.*<h1[^>]*>(.*>)?([^<]+)(<.*)?</h1>.*$;\2;p; tQ;
-        s;^.*<h2[^>]*>(.*>)?([^<]+)(<.*)?</h2>.*$;\2;p; tQ;
-        b; :Q q;
-      '
-    )"
-    printf %s\\n "$PAGE_TITLE"
-  else
+  if ! mdfile="$(mdfile "${1:-${PATH_INFO%/*}}")"; then
     return 1
   fi
+  PAGE_TITLE="$(
+    sed -nE '
+      s;^%title[ \t]+([[:graph:]][[:print:]]+)\r?$;\1;p; tQ;
+      b; :Q q;
+    ' "$mdfile"
+  )"
+  [ ! "${PAGE_TITLE}" ] && PAGE_TITLE="$(
+    MD_MACROS="" md <"$mdfile" \
+    | sed -nE '
+      s;^.*<h1[^>]*>(.*>)?([^<]+)(<.*)?</h1>.*$;\2;p; tQ;
+      s;^.*<h2[^>]*>(.*>)?([^<]+)(<.*)?</h2>.*$;\2;p; tQ;
+      b; :Q q;
+    '
+  )"
+  if [ ! "${PAGE_TITLE}" ]; then
+    PAGE_TITLE="${1:-${PATH_INFO%/*}}"
+    PAGE_TITLE="${PAGE_TITLE##*/}"
+  fi
+  printf %s\\n "$PAGE_TITLE"
 }