Re: lisp/term/ns-win.el modification

["Clément Pit-Claudel" <cpitclaudel@gmail.com>]

On 2017-04-30 10:12, Eli Zaretskii wrote:
>> From: Jean-Christophe Helary <jean.christophe.helary@gmail.com>
>> Date: Sun, 30 Apr 2017 15:41:45 +0900
>>
>>> Besides, it doesn't trim non-breakable spaces.
>>
>> That's a pity. Is there a reason why non-breakable spaces would not be considered for trimming purposes?
> 
> What's the rationale for adding NBSP?  Also, is it only the NBSP
> character that's missing, or there are others?

Possibly for consistency with other languages.  Here's what Python 3 does:

import sys
import unicodedata

for codepoint in range(sys.maxunicode + 1):
    c = chr(codepoint)
    if c.strip() == "":
        name = unicodedata.name(c, "U+{:04X}".format(codepoint))
        print("Python 3 trims {} ({})".format(name, unicodedata.category(c)))


Python 3 trims U+0009 (Cc)
Python 3 trims U+000A (Cc)
Python 3 trims U+000B (Cc)
Python 3 trims U+000C (Cc)
Python 3 trims U+000D (Cc)
Python 3 trims U+001C (Cc)
Python 3 trims U+001D (Cc)
Python 3 trims U+001E (Cc)
Python 3 trims U+001F (Cc)
Python 3 trims SPACE (Zs)
Python 3 trims U+0085 (Cc)
Python 3 trims NO-BREAK SPACE (Zs)
Python 3 trims OGHAM SPACE MARK (Zs)
Python 3 trims EN QUAD (Zs)
Python 3 trims EM QUAD (Zs)
Python 3 trims EN SPACE (Zs)
Python 3 trims EM SPACE (Zs)
Python 3 trims THREE-PER-EM SPACE (Zs)
Python 3 trims FOUR-PER-EM SPACE (Zs)
Python 3 trims SIX-PER-EM SPACE (Zs)
Python 3 trims FIGURE SPACE (Zs)
Python 3 trims PUNCTUATION SPACE (Zs)
Python 3 trims THIN SPACE (Zs)
Python 3 trims HAIR SPACE (Zs)
Python 3 trims LINE SEPARATOR (Zl)
Python 3 trims PARAGRAPH SEPARATOR (Zp)
Python 3 trims NARROW NO-BREAK SPACE (Zs)
Python 3 trims MEDIUM MATHEMATICAL SPACE (Zs)
Python 3 trims IDEOGRAPHIC SPACE (Zs)

Clément.