Avoid anoying error message on homepage when using elpher-go-current

[elpher.git] / elpher.el

diff --git a/elpher.el b/elpher.el
index 1bace1b..e16c52d 100644 (file)
--- a/elpher.el
+++ b/elpher.el
@@ -103,7 +103,7 @@
 ;;; Global constants
 ;;
 
-(defconst elpher-version "2.10.2"
+(defconst elpher-version "2.11.0"
   "Current version of elpher.")
 
 (defconst elpher-margin-width 6
@@ -135,11 +135,15 @@
 ;;; Internal variables
 ;;
 
-(defvar elpher--gemini-page-links '()
-  "Internal variable containing list of links on page.")
+;; buffer-local
+(defvar elpher--gemini-page-headings nil
+  "List of headings on the page.")
+
+(defvar elpher--gemini-page-links nil
+  "List of links on the page.")
 
 (defvar elpher--gemini-page-links-cache (make-hash-table :test 'equal)
-  "Internal variable containing hash of addresses and page links.")
+  "Hash of addresses and page links.")
 
 ;;; Customization group
 ;;
@@ -186,7 +190,7 @@ These certificates may be used for establishing authenticated TLS connections."
   :type '(file))
 
 (defcustom elpher-default-url-type "gopher"
-  "Default URL type (i.e. schema) to assume if not explicitly given."
+  "Default URL type (i.e. scheme) to assume if not explicitly given."
   :type '(choice (const "gopher")
                  (const "gemini")))
 
@@ -1457,6 +1461,8 @@ by HEADER-LINE."
                            (/ (* fill-column
                                  (font-get (font-spec :name (face-font 'default)) :size))
                               (font-get (font-spec :name (face-font face)) :size)) fill-column)))
+      (setq elpher--gemini-page-headings (cons (cons header (point))
+                                               elpher--gemini-page-headings))
       (unless (display-graphic-p)
         (insert (make-string level ?#) " "))
       (insert (propertize header 'face face))
@@ -1487,6 +1493,7 @@ width defined by elpher-gemini-max-fill-width."
 (defun elpher-render-gemini-map (data _parameters)
   "Render DATA as a gemini map file, PARAMETERS is currently unused."
   (elpher-with-clean-buffer
+   (setq elpher--gemini-page-headings nil)
    (let ((preformatted nil)
          (link-counter 1))
      (auto-fill-mode 1)
@@ -1510,6 +1517,7 @@ width defined by elpher-gemini-max-fill-width."
            (elpher-gemini-insert-link line)))
         ((string-prefix-p "#" line) (elpher-gemini-insert-header line))
         (t (elpher-gemini-insert-text line)))))
+   (setq elpher--gemini-page-headings (nreverse elpher--gemini-page-headings))
    (elpher-cache-content
     (elpher-page-address elpher-current-page)
     (buffer-string))
@@ -1630,8 +1638,8 @@ The result is rendered using RENDERER."
            "Alternatively, select a search engine and enter some search terms:\n")
    (elpher-insert-index-record "Gopher Search Engine (Veronica-2)"
                                (elpher-make-gopher-address ?7 "/v2/vs" "gopher.floodgap.com" 70))
-   (elpher-insert-index-record "Gemini Search Engine (GUS)"
-                               (elpher-address-from-url "gemini://gus.guru/search"))
+   (elpher-insert-index-record "Gemini Search Engine (geminispace.info)"
+                               (elpher-address-from-url "gemini://geminispace.info/search"))
    (insert "\n"
            "This page contains your bookmarked sites (also visit with B):\n")
    (elpher-insert-index-record "Your Bookmarks" 'bookmarks)
@@ -1846,10 +1854,10 @@ When run interactively HOST-OR-URL is read from the minibuffer."
   "Go to a particular site read from the minibuffer, initialized with the current URL."
   (interactive)
   (let ((address (elpher-page-address elpher-current-page)))
-    (if (elpher-address-special-p address)
-        (error "Command invalid for this page")
-      (let ((url (read-string "Gopher or Gemini URL: " (elpher-address-to-url address))))
-        (elpher-visit-page (elpher-make-page url (elpher-address-from-url url)))))))
+    (let ((url (read-string "Gopher or Gemini URL: "
+                            (unless (elpher-address-special-p address)
+                              (elpher-address-to-url address)))))
+      (elpher-visit-page (elpher-make-page url (elpher-address-from-url url))))))
 
 (defun elpher-visit-gemini-numbered-link (n)
   "Visit link designated by a number."
@@ -2159,9 +2167,14 @@ When run interactively HOST-OR-URL is read from the minibuffer."
 This mode is automatically enabled by the interactive
 functions which initialize the gopher client, namely
 `elpher', `elpher-go' and `elpher-bookmarks'."
+  (setq-local elpher--gemini-page-headings nil)
   (setq-local elpher-current-page nil)
   (setq-local elpher-history nil)
-  (setq-local elpher-buffer-name (buffer-name)))
+  (setq-local elpher-buffer-name (buffer-name))
+
+  (setq-local imenu-create-index-function
+              (lambda ()
+                elpher--gemini-page-headings)))
 
 (when (fboundp 'evil-set-initial-state)
   (evil-set-initial-state 'elpher-mode 'motion))