How do I search for symbols such as \253 in Emacs

How do I search for symbols such as \253 in Emacs

[acomber]

I see the symbols as \253 (or whatever) in Emacs.  But if I try to search for
\253 (backslash then enter 253 it never finds them.  But if I cut and yank
one of the symbols it works.  The trouble is the file I have is huge and
finding these symbols is hard - even though I know what they are.  I just
can't enter them to search.

How do I search for these?




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Re: How do I search for symbols such as \253 in Emacs

[Peter Dyballa]

Am 06.11.2012 um 12:23 schrieb acomber:

> How do I search for these?

Try: C-s C-q 2 5 3 RET! Before you can check the setting of the variable read-quoted-char-radix. It should be by default 8, but can also be set to 10 or 16. Depending on that variable's setting you'll have to input the value in octal, decimal, or hexadecimal notation.

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  Pete

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Re: How do I search for symbols such as \253 in Emacs

[Oleksandr Gavenko]

On 2012-11-06, Peter Dyballa wrote:

> Am 06.11.2012 um 12:23 schrieb acomber:
>
>> How do I search for these?
>
> Try: C-s C-q 2 5 3 RET! Before you can check the setting of the variable
> read-quoted-char-radix. It should be by default 8, but can also be set to 10
> or 16. Depending on that variable's setting you'll have to input the value in
> octal, decimal, or hexadecimal notation.
>
Great answer. I make this settings 4 years ago while searching about Unicode:

  http://article.gmane.org/gmane.emacs.help/32463/match=read+quoted+char+radix
                 Re: insert unicode

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Re: How do I search for symbols such as \253 in Emacs

[Peter]

I wrote this many years ago when I first picked up Emacs. As I come across new characters I just add to the list with the expected replacement string. I tried to keep track of what the character looked like in the comment beside it. The replacement strings are for text files which I am converting to LaTeX files (which is typically where I run across this problem), so you might want to change some of the replacements to better suit your application.

Hope this helps,
Peter

(defun fix-latin-1-chars ()
  (interactive)
  (let ((change-list '((?\x005397c  "``")  ; “
                       (?\xc "")           ; Page Feed character
                      (?\x005397d  "''")   ; ”
                      (?\x2019  "'")    ; ’
                      (?\x201c  "''")   ; ”
                      (?\x201d  "''")   ; ”
                      (?\x2014  "--")   ; —
                      (?\x2026  " \\ldots ")   ; —
                      (?\x0053974  "--")   ; —
                      (?\x0053979  "'")    ; ’
                      (?\x81     "'")
                      (?\x2018     "'")
                      (?\x2019     "'")
                      (?\x201A     ".")
                      (?\x2022     ".")
                      (?\x8b4      "'")    ; ´
                      (?\x53979    "'")
                      (?\x00539a6  " ")    ; …
                      (?\x0053978  "`")    ; ‘
                      (?\x0053973  "--")   ; –
                      (?\x2013  "--")   ; –
                      (?\x8b7  "*")        ; ·
                      (?\x004e647  "*")    ; 
                      (?\x004e6a0  "*")    ; 
                      (?\x8bd  ".5")       ; ½
                      (?\x8a1  " ")        ; ¡
                      (?\x8a7  " ")        ; §
                      (?\x8a8  " ")        ; ¨
                      (?\x0053973  "-")    ; –
                      (?\x0053c39  "*")    ; ∙
                      (?\x26  "and")       ; &
                      (?\x004e657  "*")    ; 
                      (?\x004e5f1  "*")    ; 
                      (?\x004e648  "*")    ; 
                      (?\x004f070  "*")    ; 
                      (?\x004e5ca  "*")    ; 
                      (?\x004e5f6  "*")    ; 
                      (?\x004e678  "*")    ; 
                      (?\xf0a8 "*")        ; 
                      (?\xf0b7 "*")        ; 
                      (?\xf0fc "*")        ; 
                      (?\x0053972  "*")    ; ‒
                      (?\x8d8  "*")        ; Ø
                      (?\x004e5aa  "*")    ; 
                      (?\x8b6 " ")         ; ¶
                      (?\x4f95f "")        ; 
                      (?\x539a0 "")        ; †
                      (?\x5397e "")
                      (?\xfeff "")
                      (?\x00539a2  "*")))  ; •
        (search-for)
        (start-point (point))
        (buffer-limit (point-max)))
    (dolist (item change-list)
      (setq search-for (make-string 1 (car item)))
      (goto-char start-point)
      (while (re-search-forward search-for buffer-limit t)
        (delete-char -1)
        (insert (car (cdr item)))))))

Re: How do I search for symbols such as \253 in Emacs

[Eli Zaretskii]

> Date: Tue, 6 Nov 2012 12:24:15 -0800 (PST)
> From: Peter <peter.milliken@gmail.com>
> Cc: help-gnu-emacs@gnu.org
> 
> I wrote this many years ago when I first picked up Emacs. As I come across new characters I just add to the list with the expected replacement string. I tried to keep track of what the character looked like in the comment beside it. The replacement strings are for text files which I am converting to LaTeX files (which is typically where I run across this problem), so you might want to change some of the replacements to better suit your application.

Some of the codepoints in your list are no longer correct: they
correspond to the internal representation of characters used by Emacs
before v23.1.  Caveat emptor!

Re: How do I search for symbols such as \253 in Emacs

[Jambunathan K]

acomber <deedexy@gmail.com> writes:

> I see the symbols as \253 (or whatever) in Emacs.  But if I try to search for
> \253 (backslash then enter 253 it never finds them.  But if I cut and yank
> one of the symbols it works.  The trouble is the file I have is huge and
> finding these symbols is hard - even though I know what they are.  I just
> can't enter them to search.
>
> How do I search for these?

It is difficult to remember codepoints, ain't it? May be use recursive
minibuffers with ucs-insert?

See http://irreal.org/blog/?p=1327

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> Sent from the Emacs - Help mailing list archive at Nabble.com.
>
>

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