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bug#39154: 27.0.60; Use character history in zap-up-to-char


From: Tino Calancha
Subject: bug#39154: 27.0.60; Use character history in zap-up-to-char
Date: Thu, 23 Jan 2020 14:51:23 +0100
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux)

Juri Linkov <address@hidden> writes:

> Better to leave alone the name of the existing command since
> "up-to-char" and "until-char" are synonyms.
>
>> - Add similar funtion `iseach-yank-to-char' (i.e. one that inserts CHAR
>>   in the seach string).
>
> Yes, this is a good name consistent with zap-to-char.

We have discussed two topics in this report, thus I am proposing the
following two commits:

I) Adjust interactive specificaion for `zap-up-to-char':

--8<-----------------------------cut here---------------start------------->8---
commit fe77bb9c2793fd7856c514f41e7a2ce4ccbc4f18
Author: Tino Calancha <address@hidden>
Date:   Thu Jan 23 14:42:29 2020 +0100

    Use character history in zap-up-to-char
    
    Extend commit
    'Add CHARS arg to read-char-from-minibuffer compatible with 
read-char-choice.'
    (04ab67470706f1c66bdf08e4078ea3dffd79b41e)
    to `zap-up-to-char'.
    
    * lisp/misc.el (lisp/misc.el): Use same interactive specification
    as in `zap-to-char' (Bug#39154).
    * etc/NEWS (Editing Changes in Emacs 27.1): Mention zap-up-to-char as well.

diff --git a/etc/NEWS b/etc/NEWS
index 792851e5af..2228a4bd25 100644
--- a/etc/NEWS
+++ b/etc/NEWS
@@ -603,10 +603,10 @@ navigation and editing of large files.
 
 +++
 ** 'zap-to-char' now uses the history of characters you used to zap to.
-'zap-to-char' uses the new 'read-char-from-minibuffer' function to allow
-navigating through the history of characters that have been input.
-This is mostly useful for characters that have complex input methods
-where inputting the character again may involve many keystrokes.
+'zap-to-char' and 'zap-up-to-char' use the new 'read-char-from-minibuffer'
+function to allow navigating through the history of characters that
+have been input.  This is mostly useful for characters that have complex
+input methods where inputting the character again may involve many keystrokes.
 
 +++
 ** 'save-some-buffers' now has a new action in the prompt: 'C-f' will
diff --git a/lisp/misc.el b/lisp/misc.el
index 05244a6ea2..af5725555b 100644
--- a/lisp/misc.el
+++ b/lisp/misc.el
@@ -69,7 +69,9 @@ zap-up-to-char
 Case is ignored if `case-fold-search' is non-nil in the current buffer.
 Goes backward if ARG is negative; error if CHAR not found.
 Ignores CHAR at point."
-  (interactive "p\ncZap up to char: ")
+  (interactive (list (prefix-numeric-value current-prefix-arg)
+                    (read-char-from-minibuffer "Zap up to char: "
+                                               nil 'read-char-history)))
   (let ((direction (if (>= arg 0) 1 -1)))
     (kill-region (point)
                 (progn
--8<-----------------------------cut here---------------end--------------->8---


II) Add new command `isearch-yank-to-char'.
  - It is desirable to add a keybinding for it as well.  Tentatively, I
  have used C-M-p in this patch; please, suggest me the one that fit better.
  

--8<-----------------------------cut here---------------start------------->8---
commit 97ffdf08dc5311989d8ee8fa0a07ce0f6695c021
Author: Tino Calancha <address@hidden>
Date:   Thu Jan 23 14:42:34 2020 +0100

    Add command isearch-yank-to-char
    
    * lisp/isearch.el (isearch-yank-to-char): New command; bind it to
    C-M-p at isearch-mode-map (Bug#39154).
    
    * etc/NEWS (Search and Replace): Announce it.
    
    * doc/emacs/search.texi (Isearch Yank): Update the manual.

diff --git a/doc/emacs/search.texi b/doc/emacs/search.texi
index 16916617a2..0ebae16d99 100644
--- a/doc/emacs/search.texi
+++ b/doc/emacs/search.texi
@@ -283,6 +283,14 @@ Isearch Yank
 useful for keyboard macros, for example in programming languages or
 markup languages in which that character marks a token boundary.  With
 a prefix numeric argument of @var{n}, the command appends everything
+from point up to the @var{n}th occurrence of the specified character.
+
+@kindex C-M-p @r{(Incremental search)}
+@findex isearch-yank-to-char
+  Likewise, @kbd{C-M-p} (@code{isearch-yank-to-char}) appends to
+the search string everything from point to the next occurrence of
+a specified character (including that character).  With
+a prefix numeric argument of @var{n}, the command appends everything
 from point to the @var{n}th occurrence of the specified character.
 
 @kindex C-y @r{(Incremental search)}
diff --git a/etc/NEWS b/etc/NEWS
index 2228a4bd25..10dd121c50 100644
--- a/etc/NEWS
+++ b/etc/NEWS
@@ -1803,7 +1803,9 @@ highlight in one iteration while processing the full 
buffer.
 'C-M-z' invokes new function 'isearch-yank-until-char', which yanks
 everything from point up to but not including the specified
 character into the search string.  This is especially useful for
-keyboard macros.
+keyboard macros.  Likewise, 'C-M-p' calls the new function
+'isearch-yank-to-char', which yanks everything from point to
+the specified character (including it)  into the search string.
 
 'C-M-w' in isearch changed from 'isearch-del-char' to the new function
 'isearch-yank-symbol-or-char'.  'isearch-del-char' is now bound to
diff --git a/lisp/isearch.el b/lisp/isearch.el
index ddf9190dc6..cb52e4ffd4 100644
--- a/lisp/isearch.el
+++ b/lisp/isearch.el
@@ -709,6 +709,7 @@ isearch-mode-map
     (define-key map "\M-\C-y" 'isearch-yank-char)
     (define-key map    "\C-y" 'isearch-yank-kill)
     (define-key map "\M-\C-z" 'isearch-yank-until-char)
+    (define-key map "\M-\C-p" 'isearch-yank-to-char)
     (define-key map "\M-s\C-e" 'isearch-yank-line)
 
     (define-key map "\M-s\M-<" 'isearch-beginning-of-buffer)
@@ -1004,6 +1005,8 @@ isearch-forward
  string and search for it.
 Type \\[isearch-yank-until-char] to yank from point until the next instance of 
a
  specified character onto end of search string and search for it.
+Type \\[isearch-yank-to-char] to yank from point to the next instance of a
+ specified character onto end of search string and search for it.
 Type \\[isearch-yank-line] to yank rest of line onto end of search string\
  and search for it.
 Type \\[isearch-yank-kill] to yank the last string of killed text.
@@ -2593,6 +2596,24 @@ isearch-yank-until-char
                    (sit-for 2)))
                 (point)))))
 
+(defun isearch-yank-to-char (char &optional arg)
+  "Pull everything to next instance of CHAR from buffer into search string.
+Interactively, prompt for CHAR.
+If optional ARG is non-nil, pull to next ARGth instance of CHAR.
+
+See `isearch-yank-until-char' for a similar command that pull everything
+until CHAR, i.e. it doesn't include CHAR."
+  (interactive "cYank to character: \np")
+  (isearch-yank-internal
+   (lambda () (let ((inhibit-field-text-motion t))
+                (condition-case nil
+                    (progn
+                      (search-forward (char-to-string char) nil nil arg))
+                  (search-failed
+                   (message "`%c' not found" char)
+                   (sit-for 2)))
+                (point)))))
+
 (defun isearch-yank-line (&optional arg)
   "Pull rest of line from buffer into search string.
 If optional ARG is non-nil, yank the next ARG lines."

--8<-----------------------------cut here---------------end--------------->8---

Patches on top of emacs-27 commit
'Minor doc string clarification in use-hard-newlines'
(7d1e9c943ffa3ded122ef3c8755e05dfb5e9c33f)





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