The character ranges are listed in
http://www.unicode.org/Public/UNIDATA/EastAsianWidth.txt .
"A" means ambiguous width as described in
http://www.unicode.org/reports/tr11/#Definitions .
Kohei Suzuki
eagle...@gmail.com
2015-05-18 23:16 GMT+09:00 Nicholas Marriott <nicholas.marri...@gmail.com>:
> Hi
>
> How does wcwidth figure this out? What are the character ranges?
>
>
> On Mon, May 18, 2015 at 09:24:37PM +0900, Kohei Suzuki wrote:
> > Thank you for reviewing.
> > Okey, then how about adding a new option "ambiguous-width" which
> controls
> > the width of East Asian ambiguous width characters?
> > It is set to 1 by default, and users can set it to 2 by `set-option
> > ambiguous-width 2` .
> > Is it acceptable?
> > Kohei Suzuki
> > [1]eagle...@gmail.com
> > 2015-05-18 2:08 GMT+09:00 Nicholas Marriott
> > <[2]nicholas.marri...@gmail.com>:
> >
> > Hi
> >
> > We can't do this because tmux must know the width of the UTF-8
> character
> > but the locale may not be UTF-8.
> >
> > On Mon, May 18, 2015 at 01:59:11AM +0900, Kohei Suzuki wrote:
> > >** ** Several characters' width are depending on locale. They're
> called
> > East
> > >** ** Asian Width. For instance, U+03B1 (GREEK SMALL LETTER ALPHA)
> has
> > width 1
> > >** ** in most locales, but it has width 2 in some East Asian
> locales
> > (e.g.
> > >** ** Japanese).
> > >
> > >** ** Kohei Suzuki
> > >** ** [1][3]eagle...@gmail.com
> > >
> > > References
> > >
> > >** ** Visible links
> > >** ** 1. mailto:[4]eagle...@gmail.com
> >
> > > From 6324eb0bef76c9ec0d214cefa433efa1493f1845 Mon Sep 17 00:00:00
> 2001
> > > From: Kohei Suzuki <[5]eagle...@gmail.com>
> > > Date: Mon, 18 May 2015 01:28:29 +0900
> > > Subject: [PATCH] Use wcwidth(1) to calculate character width
> > >
> > > Several characters' width are depending on locale. They're called
> East
> > > Asian Width. For instance, U+03B1 (GREEK SMALL LETTER ALPHA) has
> width
> > 1
> > > in most locales, but it has width 2 in some East Asian locales
> (e.g.
> > > Japanese).
> > > ---
> > >** server.c |** **1 -
> > >** tmux.h** **|** **1 -
> > >** utf8.c** **| 239
> > ++-------------------------------------------------------------
> > >** 3 files changed, 6 insertions(+), 235 deletions(-)
> > >
> > > diff --git a/server.c b/server.c
> > > index 738abe1..3c164ff 100644
> > > --- a/server.c
> > > +++ b/server.c
> > > @@ -145,7 +145,6 @@ server_start(int lockfd, char *lockfile)
> > >** ** ** **TAILQ_INIT(&session_groups);
> > >** ** ** **mode_key_init_trees();
> > >** ** ** **key_bindings_init();
> > > -** ** **utf8_build();
> > >
> > >** ** ** **start_time = time(NULL);
> > >** ** ** **log_debug("socket path %s", socket_path);
> > > diff --git a/tmux.h b/tmux.h
> > > index 054a859..7a6265a 100644
> > > --- a/tmux.h
> > > +++ b/tmux.h
> > > @@ -2286,7 +2286,6 @@ void** ** ** ** ** **
> > **session_group_synchronize1(struct session *, struct session *);
> > >** void** ** ** ** ** session_renumber_windows(struct session *);
> > >
> > >** /* utf8.c */
> > > -void** ** ** ** ** utf8_build(void);
> > >** void** ** ** ** ** utf8_set(struct utf8_data *, u_char);
> > >** int** ** ** ** ** **utf8_open(struct utf8_data *, u_char);
> > >** int** ** ** ** ** **utf8_append(struct utf8_data *, u_char);
> > > diff --git a/utf8.c b/utf8.c
> > > index 76b4846..4a84f20 100644
> > > --- a/utf8.c
> > > +++ b/utf8.c
> > > @@ -20,184 +20,10 @@
> > >
> > >** #include <stdlib.h>
> > >** #include <string.h>
> > > +#include <wchar.h>
> > >
> > >** #include "tmux.h"
> > >
> > > -struct utf8_width_entry {
> > > -** ** **u_int** **first;
> > > -** ** **u_int** **last;
> > > -
> > > -** ** **int** ** **width;
> > > -
> > > -** ** **struct utf8_width_entry *left;
> > > -** ** **struct utf8_width_entry *right;
> > > -};
> > > -
> > > -/* Random order. Not optimal but it'll do for now... */
> > > -struct utf8_width_entry utf8_width_table[] = {
> > > -** ** **{ 0x00951, 0x00954, 0, NULL, NULL },
> > > -** ** **{ 0x00ccc, 0x00ccd, 0, NULL, NULL },
> > > -** ** **{ 0x0fff9, 0x0fffb, 0, NULL, NULL },
> > > -** ** **{ 0x20000, 0x2fffd, 2, NULL, NULL },
> > > -** ** **{ 0x00ebb, 0x00ebc, 0, NULL, NULL },
> > > -** ** **{ 0x01932, 0x01932, 0, NULL, NULL },
> > > -** ** **{ 0x0070f, 0x0070f, 0, NULL, NULL },
> > > -** ** **{ 0x00a70, 0x00a71, 0, NULL, NULL },
> > > -** ** **{ 0x02329, 0x02329, 2, NULL, NULL },
> > > -** ** **{ 0x00acd, 0x00acd, 0, NULL, NULL },
> > > -** ** **{ 0x00ac7, 0x00ac8, 0, NULL, NULL },
> > > -** ** **{ 0x00a3c, 0x00a3c, 0, NULL, NULL },
> > > -** ** **{ 0x009cd, 0x009cd, 0, NULL, NULL },
> > > -** ** **{ 0x00591, 0x005bd, 0, NULL, NULL },
> > > -** ** **{ 0x01058, 0x01059, 0, NULL, NULL },
> > > -** ** **{ 0x0ffe0, 0x0ffe6, 2, NULL, NULL },
> > > -** ** **{ 0x01100, 0x0115f, 2, NULL, NULL },
> > > -** ** **{ 0x0fe20, 0x0fe23, 0, NULL, NULL },
> > > -** ** **{ 0x0302a, 0x0302f, 0, NULL, NULL },
> > > -** ** **{ 0x01772, 0x01773, 0, NULL, NULL },
> > > -** ** **{ 0x005bf, 0x005bf, 0, NULL, NULL },
> > > -** ** **{ 0x006ea, 0x006ed, 0, NULL, NULL },
> > > -** ** **{ 0x00bc0, 0x00bc0, 0, NULL, NULL },
> > > -** ** **{ 0x00962, 0x00963, 0, NULL, NULL },
> > > -** ** **{ 0x01732, 0x01734, 0, NULL, NULL },
> > > -** ** **{ 0x00d41, 0x00d43, 0, NULL, NULL },
> > > -** ** **{ 0x01b42, 0x01b42, 0, NULL, NULL },
> > > -** ** **{ 0x00a41, 0x00a42, 0, NULL, NULL },
> > > -** ** **{ 0x00eb4, 0x00eb9, 0, NULL, NULL },
> > > -** ** **{ 0x00b01, 0x00b01, 0, NULL, NULL },
> > > -** ** **{ 0x00e34, 0x00e3a, 0, NULL, NULL },
> > > -** ** **{ 0x03040, 0x03098, 2, NULL, NULL },
> > > -** ** **{ 0x0093c, 0x0093c, 0, NULL, NULL },
> > > -** ** **{ 0x00c4a, 0x00c4d, 0, NULL, NULL },
> > > -** ** **{ 0x01032, 0x01032, 0, NULL, NULL },
> > > -** ** **{ 0x00f37, 0x00f37, 0, NULL, NULL },
> > > -** ** **{ 0x00901, 0x00902, 0, NULL, NULL },
> > > -** ** **{ 0x00cbf, 0x00cbf, 0, NULL, NULL },
> > > -** ** **{ 0x0a806, 0x0a806, 0, NULL, NULL },
> > > -** ** **{ 0x00dd2, 0x00dd4, 0, NULL, NULL },
> > > -** ** **{ 0x00f71, 0x00f7e, 0, NULL, NULL },
> > > -** ** **{ 0x01752, 0x01753, 0, NULL, NULL },
> > > -** ** **{ 0x1d242, 0x1d244, 0, NULL, NULL },
> > > -** ** **{ 0x005c1, 0x005c2, 0, NULL, NULL },
> > > -** ** **{ 0x0309b, 0x0a4cf, 2, NULL, NULL },
> > > -** ** **{ 0xe0100, 0xe01ef, 0, NULL, NULL },
> > > -** ** **{ 0x017dd, 0x017dd, 0, NULL, NULL },
> > > -** ** **{ 0x00600, 0x00603, 0, NULL, NULL },
> > > -** ** **{ 0x009e2, 0x009e3, 0, NULL, NULL },
> > > -** ** **{ 0x00cc6, 0x00cc6, 0, NULL, NULL },
> > > -** ** **{ 0x0a80b, 0x0a80b, 0, NULL, NULL },
> > > -** ** **{ 0x01712, 0x01714, 0, NULL, NULL },
> > > -** ** **{ 0x00b3c, 0x00b3c, 0, NULL, NULL },
> > > -** ** **{ 0x01b00, 0x01b03, 0, NULL, NULL },
> > > -** ** **{ 0x007eb, 0x007f3, 0, NULL, NULL },
> > > -** ** **{ 0xe0001, 0xe0001, 0, NULL, NULL },
> > > -** ** **{ 0x1d185, 0x1d18b, 0, NULL, NULL },
> > > -** ** **{ 0x0feff, 0x0feff, 0, NULL, NULL },
> > > -** ** **{ 0x01b36, 0x01b3a, 0, NULL, NULL },
> > > -** ** **{ 0x01920, 0x01922, 0, NULL, NULL },
> > > -** ** **{ 0x00670, 0x00670, 0, NULL, NULL },
> > > -** ** **{ 0x00f90, 0x00f97, 0, NULL, NULL },
> > > -** ** **{ 0x01927, 0x01928, 0, NULL, NULL },
> > > -** ** **{ 0x0200b, 0x0200f, 0, NULL, NULL },
> > > -** ** **{ 0x0ff00, 0x0ff60, 2, NULL, NULL },
> > > -** ** **{ 0x0f900, 0x0faff, 2, NULL, NULL },
> > > -** ** **{ 0x0fb1e, 0x0fb1e, 0, NULL, NULL },
> > > -** ** **{ 0x00cbc, 0x00cbc, 0, NULL, NULL },
> > > -** ** **{ 0x00eb1, 0x00eb1, 0, NULL, NULL },
> > > -** ** **{ 0x10a38, 0x10a3a, 0, NULL, NULL },
> > > -** ** **{ 0x007a6, 0x007b0, 0, NULL, NULL },
> > > -** ** **{ 0x00f80, 0x00f84, 0, NULL, NULL },
> > > -** ** **{ 0x005c4, 0x005c5, 0, NULL, NULL },
> > > -** ** **{ 0x0ac00, 0x0d7a3, 2, NULL, NULL },
> > > -** ** **{ 0x017c9, 0x017d3, 0, NULL, NULL },
> > > -** ** **{ 0x00d4d, 0x00d4d, 0, NULL, NULL },
> > > -** ** **{ 0x1d167, 0x1d169, 0, NULL, NULL },
> > > -** ** **{ 0x01036, 0x01037, 0, NULL, NULL },
> > > -** ** **{ 0xe0020, 0xe007f, 0, NULL, NULL },
> > > -** ** **{ 0x00f35, 0x00f35, 0, NULL, NULL },
> > > -** ** **{ 0x017b4, 0x017b5, 0, NULL, NULL },
> > > -** ** **{ 0x0206a, 0x0206f, 0, NULL, NULL },
> > > -** ** **{ 0x00c46, 0x00c48, 0, NULL, NULL },
> > > -** ** **{ 0x01939, 0x0193b, 0, NULL, NULL },
> > > -** ** **{ 0x01dc0, 0x01dca, 0, NULL, NULL },
> > > -** ** **{ 0x10a0c, 0x10a0f, 0, NULL, NULL },
> > > -** ** **{ 0x0102d, 0x01030, 0, NULL, NULL },
> > > -** ** **{ 0x017c6, 0x017c6, 0, NULL, NULL },
> > > -** ** **{ 0x00ec8, 0x00ecd, 0, NULL, NULL },
> > > -** ** **{ 0x00b41, 0x00b43, 0, NULL, NULL },
> > > -** ** **{ 0x017b7, 0x017bd, 0, NULL, NULL },
> > > -** ** **{ 0x1d173, 0x1d182, 0, NULL, NULL },
> > > -** ** **{ 0x00a47, 0x00a48, 0, NULL, NULL },
> > > -** ** **{ 0x0232a, 0x0232a, 2, NULL, NULL },
> > > -** ** **{ 0x01b3c, 0x01b3c, 0, NULL, NULL },
> > > -** ** **{ 0x10a01, 0x10a03, 0, NULL, NULL },
> > > -** ** **{ 0x00ae2, 0x00ae3, 0, NULL, NULL },
> > > -** ** **{ 0x00483, 0x00486, 0, NULL, NULL },
> > > -** ** **{ 0x0135f, 0x0135f, 0, NULL, NULL },
> > > -** ** **{ 0x01a17, 0x01a18, 0, NULL, NULL },
> > > -** ** **{ 0x006e7, 0x006e8, 0, NULL, NULL },
> > > -#ifndef __APPLE__
> > > -** ** **{ 0x03099, 0x0309a, 0, NULL, NULL },
> > > -#endif
> > > -** ** **{ 0x00b4d, 0x00b4d, 0, NULL, NULL },
> > > -** ** **{ 0x00ce2, 0x00ce3, 0, NULL, NULL },
> > > -** ** **{ 0x00bcd, 0x00bcd, 0, NULL, NULL },
> > > -** ** **{ 0x00610, 0x00615, 0, NULL, NULL },
> > > -** ** **{ 0x00f99, 0x00fbc, 0, NULL, NULL },
> > > -** ** **{ 0x009c1, 0x009c4, 0, NULL, NULL },
> > > -** ** **{ 0x00730, 0x0074a, 0, NULL, NULL },
> > > -** ** **{ 0x00300, 0x0036f, 0, NULL, NULL },
> > > -** ** **{ 0x03030, 0x0303e, 2, NULL, NULL },
> > > -** ** **{ 0x01b34, 0x01b34, 0, NULL, NULL },
> > > -** ** **{ 0x1d1aa, 0x1d1ad, 0, NULL, NULL },
> > > -** ** **{ 0x00dca, 0x00dca, 0, NULL, NULL },
> > > -** ** **{ 0x006d6, 0x006e4, 0, NULL, NULL },
> > > -** ** **{ 0x00f86, 0x00f87, 0, NULL, NULL },
> > > -** ** **{ 0x00b3f, 0x00b3f, 0, NULL, NULL },
> > > -** ** **{ 0x0fe30, 0x0fe6f, 2, NULL, NULL },
> > > -** ** **{ 0x01039, 0x01039, 0, NULL, NULL },
> > > -** ** **{ 0x0094d, 0x0094d, 0, NULL, NULL },
> > > -** ** **{ 0x00c55, 0x00c56, 0, NULL, NULL },
> > > -** ** **{ 0x00488, 0x00489, 0, NULL, NULL },
> > > -** ** **{ 0x00e47, 0x00e4e, 0, NULL, NULL },
> > > -** ** **{ 0x00a81, 0x00a82, 0, NULL, NULL },
> > > -** ** **{ 0x00ac1, 0x00ac5, 0, NULL, NULL },
> > > -** ** **{ 0x0202a, 0x0202e, 0, NULL, NULL },
> > > -** ** **{ 0x00dd6, 0x00dd6, 0, NULL, NULL },
> > > -** ** **{ 0x018a9, 0x018a9, 0, NULL, NULL },
> > > -** ** **{ 0x0064b, 0x0065e, 0, NULL, NULL },
> > > -** ** **{ 0x00abc, 0x00abc, 0, NULL, NULL },
> > > -** ** **{ 0x00b82, 0x00b82, 0, NULL, NULL },
> > > -** ** **{ 0x00f39, 0x00f39, 0, NULL, NULL },
> > > -** ** **{ 0x020d0, 0x020ef, 0, NULL, NULL },
> > > -** ** **{ 0x01dfe, 0x01dff, 0, NULL, NULL },
> > > -** ** **{ 0x30000, 0x3fffd, 2, NULL, NULL },
> > > -** ** **{ 0x00711, 0x00711, 0, NULL, NULL },
> > > -** ** **{ 0x0fe00, 0x0fe0f, 0, NULL, NULL },
> > > -** ** **{ 0x0180b, 0x0180d, 0, NULL, NULL },
> > > -** ** **{ 0x10a3f, 0x10a3f, 0, NULL, NULL },
> > > -** ** **{ 0x00981, 0x00981, 0, NULL, NULL },
> > > -** ** **{ 0x0a825, 0x0a826, 0, NULL, NULL },
> > > -** ** **{ 0x00941, 0x00948, 0, NULL, NULL },
> > > -** ** **{ 0x01b6b, 0x01b73, 0, NULL, NULL },
> > > -** ** **{ 0x00e31, 0x00e31, 0, NULL, NULL },
> > > -** ** **{ 0x0fe10, 0x0fe19, 2, NULL, NULL },
> > > -** ** **{ 0x00a01, 0x00a02, 0, NULL, NULL },
> > > -** ** **{ 0x00a4b, 0x00a4d, 0, NULL, NULL },
> > > -** ** **{ 0x00f18, 0x00f19, 0, NULL, NULL },
> > > -** ** **{ 0x00fc6, 0x00fc6, 0, NULL, NULL },
> > > -** ** **{ 0x02e80, 0x03029, 2, NULL, NULL },
> > > -** ** **{ 0x00b56, 0x00b56, 0, NULL, NULL },
> > > -** ** **{ 0x009bc, 0x009bc, 0, NULL, NULL },
> > > -** ** **{ 0x005c7, 0x005c7, 0, NULL, NULL },
> > > -** ** **{ 0x02060, 0x02063, 0, NULL, NULL },
> > > -** ** **{ 0x00c3e, 0x00c40, 0, NULL, NULL },
> > > -** ** **{ 0x10a05, 0x10a06, 0, NULL, NULL },
> > > -};
> > > -
> > > -struct utf8_width_entry** ** ** *utf8_width_root = NULL;
> > > -
> > > -int** utf8_overlap(struct utf8_width_entry *, struct
> utf8_width_entry
> > *);
> > >** u_int** ** ** ** utf8_combine(const struct utf8_data *);
> > >** u_int** ** ** ** utf8_width(const struct utf8_data *);
> > >
> > > @@ -257,48 +83,6 @@ utf8_append(struct utf8_data *utf8data,
> u_char ch)
> > >** ** ** **return (0);
> > >** }
> > >
> > > -/* Check if two width tree entries overlap. */
> > > -int
> > > -utf8_overlap(struct utf8_width_entry *item1, struct
> utf8_width_entry
> > *item2)
> > > -{
> > > -** ** **if (item1->first >= item2->first && item1->first <=
> > item2->last)
> > > -** ** ** ** ** ** **return (1);
> > > -** ** **if (item1->last >= item2->first && item1->last <=
> > item2->last)
> > > -** ** ** ** ** ** **return (1);
> > > -** ** **if (item2->first >= item1->first && item2->first <=
> > item1->last)
> > > -** ** ** ** ** ** **return (1);
> > > -** ** **if (item2->last >= item1->first && item2->last <=
> > item1->last)
> > > -** ** ** ** ** ** **return (1);
> > > -** ** **return (0);
> > > -}
> > > -
> > > -/* Build UTF-8 width tree. */
> > > -void
> > > -utf8_build(void)
> > > -{
> > > -** ** **struct utf8_width_entry **ptr, *item, *node;
> > > -** ** **u_int** ** ** ** ** ** ** ** ** ** **i, j;
> > > -
> > > -** ** **for (i = 0; i < nitems(utf8_width_table); i++) {
> > > -** ** ** ** ** ** **item = &utf8_width_table[i];
> > > -
> > > -** ** ** ** ** ** **for (j = 0; j < nitems(utf8_width_table);
> j++) {
> > > -** ** ** ** ** ** ** ** ** ** **if (i != j && utf8_overlap(item,
> > &utf8_width_table[j]))
> > > -** ** ** ** ** ** ** ** ** ** ** ** ** ** **log_fatalx("utf8
> overlap:
> > %u %u", i, j);
> > > -** ** ** ** ** ** **}
> > > -
> > > -** ** ** ** ** ** **ptr = &utf8_width_root;
> > > -** ** ** ** ** ** **while (*ptr != NULL) {
> > > -** ** ** ** ** ** ** ** ** ** **node = *ptr;
> > > -** ** ** ** ** ** ** ** ** ** **if (item->last < node->first)
> > > -** ** ** ** ** ** ** ** ** ** ** ** ** ** **ptr = &node->left;
> > > -** ** ** ** ** ** ** ** ** ** **else if (item->first >
> node->last)
> > > -** ** ** ** ** ** ** ** ** ** ** ** ** ** **ptr = &node->right;
> > > -** ** ** ** ** ** **}
> > > -** ** ** ** ** ** ***ptr = item;
> > > -** ** **}
> > > -}
> > > -
> > >** /* Combine UTF-8 into 32-bit Unicode. */
> > >** u_int
> > >** utf8_combine(const struct utf8_data *utf8data)
> > > @@ -342,25 +126,14 @@ utf8_split2(u_int uc, u_char *ptr)
> > >** ** ** **return (1);
> > >** }
> > >
> > > -/* Lookup width of UTF-8 data in tree. */
> > >** u_int
> > >** utf8_width(const struct utf8_data *utf8data)
> > >** {
> > > -** ** **struct utf8_width_entry *item;
> > > -** ** **u_int** ** ** ** ** ** ** ** ** ** value;
> > > -
> > > -** ** **value = utf8_combine(utf8data);
> > > -
> > > -** ** **item = utf8_width_root;
> > > -** ** **while (item != NULL) {
> > > -** ** ** ** ** ** **if (value < item->first)
> > > -** ** ** ** ** ** ** ** ** ** **item = item->left;
> > > -** ** ** ** ** ** **else if (value > item->last)
> > > -** ** ** ** ** ** ** ** ** ** **item = item->right;
> > > -** ** ** ** ** ** **else
> > > -** ** ** ** ** ** ** ** ** ** **return (item->width);
> > > -** ** **}
> > > -** ** **return (1);
> > > +** ** **int width;
> > > +
> > > +** ** **width = wcwidth(utf8_combine(utf8data));
> > > +
> > > +** ** **return (width <= -1 ? 1 : width);
> > >** }
> > >
> > >** /*
> > > --
> > > 2.4.1
> > >
> >
> > >
> >
> ------------------------------------------------------------------------------
> > > One dashboard for servers and applications across
> > Physical-Virtual-Cloud
> > > Widest out-of-the-box monitoring support with 50+ applications
> > > Performance metrics, stats and reports that give you Actionable
> > Insights
> > > Deep dive visibility with transaction tracing using APM Insight.
> > > [6]http://ad.doubleclick.net/ddm/clk/290420510;117567292;y
> >
> > > _______________________________________________
> > > tmux-users mailing list
> > > [7]tmux-users@lists.sourceforge.net
> > > [8]https://lists.sourceforge.net/lists/listinfo/tmux-users
> >
> > References
> >
> > Visible links
> > 1. mailto:eagle...@gmail.com
> > 2. mailto:nicholas.marri...@gmail.com
> > 3. mailto:eagle...@gmail.com
> > 4. mailto:eagle...@gmail.com
> > 5. mailto:eagle...@gmail.com
> > 6. http://ad.doubleclick.net/ddm/clk/290420510;117567292;y
> > 7. mailto:tmux-users@lists.sourceforge.net
> > 8. https://lists.sourceforge.net/lists/listinfo/tmux-users
>
------------------------------------------------------------------------------
One dashboard for servers and applications across Physical-Virtual-Cloud
Widest out-of-the-box monitoring support with 50+ applications
Performance metrics, stats and reports that give you Actionable Insights
Deep dive visibility with transaction tracing using APM Insight.
http://ad.doubleclick.net/ddm/clk/290420510;117567292;y
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