Unicode chars NEL, FF, LS, PS
Does anyone here know if Vim respects the following Unicode characters (represents them rather than just indicating literals): http://en.wikipedia.org/wiki/Newline#Unicode I'm not on a Unicode platform at the moment, but I'm wondering if Vim could ever have the listchars to do it like mined: http://towo.net/mined/mined-uni.png -- Steve Hall [ digitect dancingpaper com ]
Re: Unicode chars NEL, FF, LS, PS
Steve Hall wrote: Does anyone here know if Vim respects the following Unicode characters (represents them rather than just indicating literals): http://en.wikipedia.org/wiki/Newline#Unicode I'm not on a Unicode platform at the moment, but I'm wondering if Vim could ever have the listchars to do it like mined: http://towo.net/mined/mined-uni.png Vim is a text editor, not a word processor. It does not necessarily show control characters as a word processor or a printer would. Even on a non-Unicode platform, you should be able to run a +multibyte version of gvim, set 'encoding' to UTF-8 while preserving the locale setting of 'encoding' in 'termencoding', and enter the characters according to :help i_CTRL-V_digit to see what happens. NEL (Next Line, 0x85) is an upper-ASCII control character. I expect Vim to represent it as 85 when 'encoding' is set to UTF-8. This, however, depends on the setting of the 'isprint' option. I don't know what this control character means. FF (Form Feed, 0x0C) is an ASCII control character; it should be represented as ^L in Unicode just as in Latin1. When sent to a printer, it usually causes a page eject. LS (Line Separator, L SEP, U+2028) and PS (Paragraph Separator, P SEP, U+2029) are Format characters according to Unicode http://www.unicode.org/charts/PDF/U2000.pdf . They are followed in the charts by Left-to-Right Embedding, Right-to-Left Embedding, Pop Directional Formatting etc. I don't expect Vim to handle them otherwise than any other character, i.e., fetch a glyph, if any (probably none) from your 'guifont'. In my Gnome2 gvim with 'encoding' set to UTF-8, both U+2028 and U+2029 display as single-width spaces. Best regards, Tony.
Re: Unicode chars NEL, FF, LS, PS
On Sat, 2006-09-30 at 01:14 +0200, A.J.Mechelynck wrote: Steve Hall wrote: Does anyone here know if Vim respects the following Unicode characters (represents them rather than just indicating literals): http://en.wikipedia.org/wiki/Newline#Unicode I'm not on a Unicode platform at the moment, but I'm wondering if Vim could ever have the listchars to do it like mined: http://towo.net/mined/mined-uni.png Vim is a text editor, not a word processor. It does not necessarily show control characters as a word processor or a printer would. However you might alternatively say that these floodgates were opened when list was invented. :) Even on a non-Unicode platform, you should be able to run a +multibyte version of gvim, set 'encoding' to UTF-8 while preserving the locale setting of 'encoding' in 'termencoding', and enter the characters according to :help i_CTRL-V_digit to see what happens. Sometimes there's a font limitation, and I don't always trust what I see. NEL (Next Line, 0x85) is an upper-ASCII control character. I expect Vim to represent it as 85 when 'encoding' is set to UTF-8. This, however, depends on the setting of the 'isprint' option. I don't know what this control character means. FF (Form Feed, 0x0C) is an ASCII control character; it should be represented as ^L in Unicode just as in Latin1. When sent to a printer, it usually causes a page eject. LS (Line Separator, L SEP, U+2028) and PS (Paragraph Separator, P SEP, U+2029) are Format characters according to Unicode http://www.unicode.org/charts/PDF/U2000.pdf . They are followed in the charts by Left-to-Right Embedding, Right-to-Left Embedding, Pop Directional Formatting etc. I don't expect Vim to handle them otherwise than any other character, i.e., fetch a glyph, if any (probably none) from your 'guifont'. In my Gnome2 gvim with 'encoding' set to UTF-8, both U+2028 and U+2029 display as single-width spaces. It would be a lot to ask of any text editor to respect these new Unicode formatting characters. But I do think the authors of the spec intended these to be additions to the traditional CR and LF. I've been involved in a why can't Vim do X, editor Y can do it discussion, so my interest here is not actually using these chars myself. But there are likely some cases where they will be useful, more and more as software adopts Unicode. I'd personally only care that listchars has an option for them, on screen they act the same as any other line ending or tab char. -- Steve Hall [ digitect dancingpaper com ]
Re: Unicode chars NEL, FF, LS, PS
Steve Hall wrote: [...] It would be a lot to ask of any text editor to respect these new Unicode formatting characters. But I do think the authors of the spec intended these to be additions to the traditional CR and LF. I've been involved in a why can't Vim do X, editor Y can do it discussion, so my interest here is not actually using these chars myself. But there are likely some cases where they will be useful, more and more as software adopts Unicode. I'd personally only care that listchars has an option for them, on screen they act the same as any other line ending or tab char. Well, they don't. The only recognised line ending in Vim is the OS-specific one: CR on the Mac, LF under Unix, CR+LF on Windows. IIUC, in Unicode the use of embedded format characters is deprecated in favour of markup, e.g. in HTML span dir=rtl.../span rather than LRE ... PDF, P.../P rather than P-SEP, etc. Best regards, Tony.
