bug#44048: 27.1; [PATCH] ffap-gopher-at-point infinite loop

[dick . r . chiang]

emacs -Q --batch -l ffap --eval "(with-temp-buffer (save-excursion (insert
\"type=\")) (ffap-guess-file-name-at-point))"

>From 3fb3caa6a8633a4e36a3af094bce0b07c3e9aac1 Mon Sep 17 00:00:00 2001
From: dickmao <none>
Date: Sat, 17 Oct 2020 17:19:04 -0400
Subject: [PATCH] `ffap-gopher-at-point` interminable without newlines

* lisp/ffap.el (ffap-gopher-at-point): Check for eobp.
* test/lisp/ffap-tests.el (ffap-test-no-newlines): Ensure termination for
corner case.
---
 lisp/ffap.el            | 3 ++-
 test/lisp/ffap-tests.el | 6 ++++++
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/lisp/ffap.el b/lisp/ffap.el
index ccba291144..2c1d3d5bd9 100644
--- a/lisp/ffap.el
+++ b/lisp/ffap.el
@@ -1383,7 +1383,8 @@ ffap-gopher-at-point
                          (point)))
              (bookmark (cl-loop for keyval = (ffap--gopher-var-on-line)
                                 while keyval collect keyval
-                                do (forward-line 1))))
+                                do (forward-line 1)
+                                until (eobp))))
         (when bookmark
           (setq ffap-string-at-point-region (list beg (point)))
           (let-alist (nconc bookmark '((type . "1") (port . "70")))
diff --git a/test/lisp/ffap-tests.el b/test/lisp/ffap-tests.el
index e8c12669c1..ca8c10831f 100644
--- a/test/lisp/ffap-tests.el
+++ b/test/lisp/ffap-tests.el
@@ -117,6 +117,12 @@ ffap-test-with-spaces
      t "C:\\temp\\program.log on Windows or /var/log/program.log on Unix.")
     "\\temp\\program.log")))
 
+(ert-deftest ffap-test-no-newlines ()
+  (should-not
+   (with-temp-buffer
+     (save-excursion (insert "type="))
+     (ffap-guess-file-name-at-point))))
+
 (provide 'ffap-tests)
 
 ;;; ffap-tests.el ends here
-- 
2.26.2



In GNU Emacs 27.1 (build 2, x86_64-pc-linux-gnu, GTK+ Version 3.22.30)
 of 2020-09-20 built on dick
Repository revision: dff02e85245dfbbeea7d57dc1a753a9ba24616d5
Repository branch: gnus-dev-27
Windowing system distributor 'The X.Org Foundation', version 11.0.11906000
System Description: Ubuntu 18.04.4 LTS

Recent messages:
20201017T172001.512> nnhackernews-request-group: 211 22898 1 22898 news
20201017T172001.513> Fetching headers for nnhackernews:news...
20201017T172002.226> Fetching headers for nnhackernews:news...done
20201017T172002.248> Scoring...
20201017T172002.303> Scoring...done
20201017T172002.311> Generating summary...
20201017T172002.628> Generating summary...done
20201017T172002.629> Processing kill file 
/home/dick/News/nnhackernews:news.KILL...
20201017T172002.664> Processing kill file 
/home/dick/News/nnhackernews:news.KILL...done
20201017T172002.682> Retrieving newsgroup: nnhackernews:news...done

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