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authorJohan Claesson <[email protected]>2016-06-16 14:43:59 +0200
committerDan Gudmundsson <[email protected]>2016-08-31 16:40:19 +0200
commit688a58303ac827d3072aeba01e641cae2a48c041 (patch)
tree6f88949bf9292db5a714e9f325839192ba0aade1 /lib/tools/emacs
parent2652d2f9b9f58746b80786fe7e62ae36b09bc890 (diff)
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Enable tag completion in emacs erlang shell
Completion in erlang shell buffer only works in Emacs 25. Minor cleanup of completion stuff. Add test-case for completion at point. Avoid inf-loop in erlang-end-of-clause when buffer starts with whitespace.
Diffstat (limited to 'lib/tools/emacs')
-rw-r--r--lib/tools/emacs/erlang-test.el59
-rw-r--r--lib/tools/emacs/erlang.el60
2 files changed, 59 insertions, 60 deletions
diff --git a/lib/tools/emacs/erlang-test.el b/lib/tools/emacs/erlang-test.el
index 9a146632c5..549fae4799 100644
--- a/lib/tools/emacs/erlang-test.el
+++ b/lib/tools/emacs/erlang-test.el
@@ -52,28 +52,29 @@ concatenated to form an erlang file to test on.")
(ert-deftest erlang-test-tags ()
(let* ((dir (make-temp-file "erlang-test" t))
- (erlang-file (expand-file-name "erlang_test.erl" dir))
- (tags-file (expand-file-name "TAGS" dir))
- tags-file-name tags-table-list erlang-buffer)
- (unwind-protect
- (progn
- (erlang-test-create-erlang-file erlang-file)
- (erlang-test-compile-tags erlang-file tags-file)
- (setq erlang-buffer (find-file-noselect erlang-file))
- (with-current-buffer erlang-buffer
- (setq-local tags-file-name tags-file))
- ;; Setting global tags-file-name is a workaround for
- ;; GNU Emacs bug#23164.
- (setq tags-file-name tags-file)
- (erlang-test-completion-table)
- (erlang-test-xref-find-definitions erlang-file erlang-buffer))
- (when (buffer-live-p erlang-buffer)
- (kill-buffer erlang-buffer))
- (let ((tags-buffer (find-buffer-visiting tags-file)))
- (when (buffer-live-p tags-buffer)
- (kill-buffer tags-buffer)))
- (when (file-exists-p dir)
- (delete-directory dir t)))))
+ (erlang-file (expand-file-name "erlang_test.erl" dir))
+ (tags-file (expand-file-name "TAGS" dir))
+ tags-file-name tags-table-list erlang-buffer)
+ (unwind-protect
+ (progn
+ (erlang-test-create-erlang-file erlang-file)
+ (erlang-test-compile-tags erlang-file tags-file)
+ (setq erlang-buffer (find-file-noselect erlang-file))
+ (with-current-buffer erlang-buffer
+ (setq-local tags-file-name tags-file))
+ ;; Setting global tags-file-name is a workaround for
+ ;; GNU Emacs bug#23164.
+ (setq tags-file-name tags-file)
+ (erlang-test-complete-at-point tags-file)
+ (erlang-test-completion-table)
+ (erlang-test-xref-find-definitions erlang-file erlang-buffer))
+ (when (buffer-live-p erlang-buffer)
+ (kill-buffer erlang-buffer))
+ (let ((tags-buffer (find-buffer-visiting tags-file)))
+ (when (buffer-live-p tags-buffer)
+ (kill-buffer tags-buffer)))
+ (when (file-exists-p dir)
+ (delete-directory dir t)))))
(defun erlang-test-create-erlang-file (erlang-file)
(with-temp-file erlang-file
@@ -116,6 +117,20 @@ concatenated to form an erlang file to test on.")
(should (eq expected-line (line-number-at-pos)))
(should (= (point-at-bol) (point))))
+(defun erlang-test-complete-at-point (tags-file)
+ (with-temp-buffer
+ (erlang-mode)
+ (setq-local tags-file-name tags-file)
+ (insert "erlang_test:fun")
+ (erlang-complete-tag)
+ (should (looking-back "erlang_test:function"))
+ (insert "\nfun")
+ (erlang-complete-tag)
+ (should (looking-back "function"))
+ (insert "\nerlang_")
+ (erlang-complete-tag)
+ (should (looking-back "erlang_test:"))))
+
(provide 'erlang-test)
diff --git a/lib/tools/emacs/erlang.el b/lib/tools/emacs/erlang.el
index a2062180f3..466d37336a 100644
--- a/lib/tools/emacs/erlang.el
+++ b/lib/tools/emacs/erlang.el
@@ -1436,8 +1436,6 @@ Other commands:
(erlang-skel-init)
(when (fboundp 'tempo-use-tag-list)
(tempo-use-tag-list 'erlang-tempo-tags))
- (when (boundp 'xref-backend-functions)
- (add-hook 'xref-backend-functions #'erlang-etags--xref-backend nil t))
(run-hooks 'erlang-mode-hook)
(if (zerop (buffer-size))
(run-hooks 'erlang-new-file-hook)))
@@ -1548,9 +1546,7 @@ Other commands:
(set (make-local-variable 'outline-regexp) "[[:lower:]0-9_]+ *(.*) *-> *$")
(set (make-local-variable 'outline-level) (lambda () 1))
(set (make-local-variable 'add-log-current-defun-function)
- 'erlang-current-defun)
- (set (make-local-variable 'find-tag-default-function)
- 'erlang-find-tag-for-completion))
+ 'erlang-current-defun))
(defun erlang-font-lock-init ()
"Initialize Font Lock for Erlang mode."
@@ -3233,18 +3229,16 @@ With argument, do this that many times."
(interactive "p")
(or arg (setq arg 1))
(while (and (looking-at "[ \t]*[%\n]")
- (zerop (forward-line 1))))
+ (zerop (forward-line 1))))
;; Move to the next clause.
(erlang-beginning-of-clause (- arg))
(beginning-of-line);; Just to be sure...
(let ((continue t))
(while (and (not (bobp)) continue)
(forward-line -1)
- (skip-chars-forward " \t")
- (if (looking-at "[%\n]")
- nil
- (end-of-line)
- (setq continue nil)))))
+ (unless (looking-at "[ \t]*[%\n]")
+ (end-of-line)
+ (setq continue nil)))))
(defun erlang-mark-clause ()
"Put mark at end of clause, point at beginning."
@@ -4352,11 +4346,6 @@ as on the old form `tag'.
In the completion list, `module:tag' and `module:' shows up.
-Call this function from an appropriate init file, or add it to
-Erlang mode hook with the commands:
- (add-hook 'erlang-mode-hook 'erlang-tags-init)
- (add-hook 'erlang-shell-mode-hook 'erlang-tags-init)
-
This function only works under Emacs 18 and Emacs 19. Currently, It
is not implemented under XEmacs. (Hint: The Emacs 19 etags module
works under XEmacs.)"
@@ -4367,11 +4356,17 @@ works under XEmacs.)"
(setq erlang-tags-installed t))
(t
(require 'etags)
- ;; Test on a function available in the Emacs 19 version
- ;; of tags but not in the XEmacs version.
- (when (fboundp 'find-tag-noselect)
- (erlang-tags-define-keys (current-local-map))
- (setq erlang-tags-installed t)))))
+ (set (make-local-variable 'find-tag-default-function)
+ 'erlang-find-tag-for-completion)
+ (if (boundp 'xref-backend-functions)
+ ;; Emacs 25+
+ (add-hook 'xref-backend-functions
+ #'erlang-etags--xref-backend nil t)
+ ;; Test on a function available in the Emacs 19 version
+ ;; of tags but not in the XEmacs version.
+ (when (fboundp 'find-tag-noselect)
+ (erlang-tags-define-keys (current-local-map))
+ (setq erlang-tags-installed t))))))
@@ -4775,8 +4770,6 @@ for a tag on the form `module:tag'."
;;; completion-table' containing all normal tags plus tags on the form
;;; `module:tag' and `module:'.
-;; PENDING - Should probably make use of the
-;; `completion-at-point-functions' hook instead of this advice.
(when (and (locate-library "etags")
(require 'etags)
(fboundp 'etags-tags-completion-table)
@@ -4807,8 +4800,7 @@ about Erlang modules."
(condition-case nil
(require 'etags)
(error nil))
- (cond ((and erlang-tags-installed
- (fboundp 'etags-tags-completion-table)
+ (cond ((and (fboundp 'etags-tags-completion-table)
(fboundp 'tags-lazy-completion-table)) ; Emacs 23.1+
(let ((erlang-replace-etags-tags-completion-table t))
(complete-tag)))
@@ -5213,19 +5205,10 @@ The following special commands are available:
(setq comint-input-ignoredups t)
(setq comint-scroll-show-maximum-output t)
(setq comint-scroll-to-bottom-on-output t)
- ;; In Emacs 19.30, `add-hook' has got a `local' flag, use it. If
- ;; the call fails, just call the normal `add-hook'.
- (condition-case nil
- (progn
- (add-hook 'comint-output-filter-functions
- 'inferior-erlang-strip-delete nil t)
- (add-hook 'comint-output-filter-functions
- 'inferior-erlang-strip-ctrl-m nil t))
- (error
- (funcall (symbol-function 'make-local-hook)
- 'comint-output-filter-functions) ; obsolete as of Emacs 21.1
- (add-hook 'comint-output-filter-functions 'inferior-erlang-strip-delete)
- (add-hook 'comint-output-filter-functions 'inferior-erlang-strip-ctrl-m)))
+ (add-hook 'comint-output-filter-functions
+ 'inferior-erlang-strip-delete nil t)
+ (add-hook 'comint-output-filter-functions
+ 'inferior-erlang-strip-ctrl-m nil t)
;; Some older versions of comint don't have an input ring.
(if (fboundp 'comint-read-input-ring)
(progn
@@ -5251,6 +5234,7 @@ The following special commands are available:
(define-key map [menu-bar compilation]
(cons "Errors" compilation-menu-map)))
map)))))
+ (erlang-tags-init)
(run-hooks 'erlang-shell-mode-hook))