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From: Bozhidar Batsov <bozhidar.batsov@gmail.com>
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Subject: Re: Proposed enhancement for `split-string'
Date: Fri, 18 Jul 2014 15:24:00 +0300
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Drew=E2=80=99s suggestion can be implemented a different function in subr=
-x I guess.

=E2=80=94
Cheers,=C2=A0
Bozhidar

On July 15, 2014 at 3:04:48 AM, Stephen J. Turnbull (stephen=40xemacs.org=
) wrote:

Drew Adams writes: =20

> The second arg, HOW, can be a regexp, giving the same behavior as now. =
=20
> Alternatively, HOW can be (1) a character predicate or (2) a doubleton =
=20
> plist (PROPERTY VALUE), where PROPERTY is a text property and VALUE is =
=20
> one of its possible values. =20

Why not just allow it to be any function returning an interval (with =20
implicit argument =3D (point)), and provide appropriate functions to =20
accomplish the tasks you propose=3F =20

> By providing non-nil TEST you can test, for example: =20
> =20
> * Whether the actual value of text property =60invisible' belongs to th=
e =20
> current =60buffer-invisibility-spec'. =20
> =20
> * Whether a particular face is among the faces that are the value of =20
> property =60face'. =20

A general predicate for HOW could do this, too. =20

> Non-nil optional arg =46LIP simply swaps the separators and the kept =20
> substrings - regardless of HOW the separating is defined. =20

This can be done for the =22standard=22 functions by providing an optiona=
l =20
=46LIP argument, and using (lambda () (how-func 'flip-me)) as the HOW. =20
Alternatively you could provide flipped standard HOW functions. =20

I have no objection to a new function =60split-string-=C3=A0-la-drew' wit=
h =20
any signature you like, but =60split-string' should keep as simple a =20
signature as possible. =20


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<html><head><style>body=7Bfont-family:Helvetica,Arial;font-size:13px=7D</=
style></head><body style=3D=22word-wrap: break-word; -webkit-nbsp-mode: s=
pace; -webkit-line-break: after-white-space;=22><div id=3D=22bloop=5Fcust=
omfont=22 style=3D=22font-family:Helvetica,Arial;font-size:13px; color: r=
gba(0,0,0,1.0); margin: 0px; line-height: auto;=22>Drew=E2=80=99s suggest=
ion can be implemented a different function in subr-x I guess.</div><div =
id=3D=22bloop=5Fcustomfont=22 style=3D=22font-family:Helvetica,Arial;font=
-size:13px; color: rgba(0,0,0,1.0); margin: 0px; line-height: auto;=22><b=
r></div> <div id=3D=22bloop=5Fsign=5F1405686201858605824=22 class=3D=22bl=
oop=5Fsign=22><span style=3D=22font-family:helvetica,arial;font-size:13px=
=22></span>=E2=80=94<div>Cheers,&nbsp;<br>Bozhidar<br></div></div> <br><p=
 style=3D=22color:=23000;=22>On July 15, 2014 at 3:04:48 AM, Stephen J. T=
urnbull (<a href=3D=22mailto:stephen=40xemacs.org=22>stephen=40xemacs.org=
</a>) wrote:</p> <blockquote type=3D=22cite=22 class=3D=22clean=5Fbq=22><=
span><div><div></div><div>Drew Adams writes:
<br>
<br> &gt; The second arg, HOW, can be a regexp, giving the same behavior =
as now.
<br> &gt; Alternatively, HOW can be (1) a character predicate or (2) a do=
ubleton
<br> &gt; plist (PROPERTY VALUE), where PROPERTY is a text property and V=
ALUE is
<br> &gt; one of its possible values.
<br>
<br>Why not just allow it to be any function returning an interval (with
<br>implicit argument =3D (point)), and provide appropriate functions to
<br>accomplish the tasks you propose=3F
<br>
<br> &gt; By providing non-nil TEST you can test, for example:
<br> &gt; =20
<br> &gt; * Whether the actual value of text property =60invisible' belon=
gs to the
<br> &gt;   current =60buffer-invisibility-spec'.
<br> &gt; =20
<br> &gt; * Whether a particular face is among the faces that are the val=
ue of
<br> &gt;   property =60face'.
<br>
<br>A general predicate for HOW could do this, too.
<br>
<br> &gt; Non-nil optional arg =46LIP simply swaps the separators and the=
 kept
<br> &gt; substrings - regardless of HOW the separating is defined.
<br>
<br>This can be done for the =22standard=22 functions by providing an opt=
ional
<br>=46LIP argument, and using (lambda () (how-func 'flip-me)) as the HOW=
.
<br>Alternatively you could provide flipped standard HOW functions.
<br>
<br>I have no objection to a new function =60split-string-=C3=A0-la-drew'=
 with
<br>any signature you like, but =60split-string' should keep as simple a
<br>signature as possible.
<br>
<br></div></div></span></blockquote></body></html>
--53c911e0_2443a858_daeb--