source: patches/diffutils-2.8.7-i18n-1.patch@ 0a81d23

clfs-1.2 clfs-2.1 clfs-3.0.0-systemd clfs-3.0.0-sysvinit systemd sysvinit
Last change on this file since 0a81d23 was 92584937, checked in by Jim Gifford <clfs@…>, 16 years ago

Added Internationalization Patch to Diffutils
  • Property mode set to 100644
File size: 17.9 KB
RevLine 
[92584937]1Submitted By: Jim Gifford <jim at cross-lfs dot org>
2Date: 2009-01-08
3Initial Package Version: 2.8.7
4Upstream Status: Unkown
5Origin: Mandriva
6Description: i18n Updates
7
8diff -Naur diffutils-2.8.7.orig/src/diff.c diffutils-2.8.7/src/diff.c
9--- diffutils-2.8.7.orig/src/diff.c 2004-04-12 00:44:35.000000000 -0700
10+++ diffutils-2.8.7/src/diff.c 2009-01-08 13:26:42.000000000 -0800
11@@ -273,6 +273,13 @@
12 re_set_syntax (RE_SYNTAX_GREP | RE_NO_POSIX_BACKTRACKING);
13 excluded = new_exclude ();
14
15+#ifdef HANDLE_MULTIBYTE
16+ if (MB_CUR_MAX > 1)
17+ lines_differ = lines_differ_multibyte;
18+ else
19+#endif
20+ lines_differ = lines_differ_singlebyte;
21+
22 /* Decode the options. */
23
24 while ((c = getopt_long (argc, argv, shortopts, longopts, 0)) != -1)
25diff -Naur diffutils-2.8.7.orig/src/diff.h diffutils-2.8.7/src/diff.h
26--- diffutils-2.8.7.orig/src/diff.h 2004-04-12 00:44:35.000000000 -0700
27+++ diffutils-2.8.7/src/diff.h 2009-01-08 13:26:42.000000000 -0800
28@@ -25,6 +25,19 @@
29 #include <stdio.h>
30 #include <unlocked-io.h>
31
32+/* For platform which support the ISO C amendement 1 functionality we
33+ support user defined character classes. */
34+#if defined HAVE_WCTYPE_H && defined HAVE_WCHAR_H
35+/* Solaris 2.5 has a bug: <wchar.h> must be included before <wctype.h>. */
36+# include <wchar.h>
37+# include <wctype.h>
38+/* # if defined (HAVE_MBRTOWC) */
39+# define HANDLE_MULTIBYTE 1
40+/* # endif */
41+#endif
42+
43+#define TAB_WIDTH 8
44+
45 /* What kind of changes a hunk contains. */
46 enum changes
47 {
48@@ -352,7 +365,13 @@
49 extern char const pr_program[];
50 char *concat (char const *, char const *, char const *);
51 char *dir_file_pathname (char const *, char const *);
52-bool lines_differ (char const *, char const *);
53+
54+bool (*lines_differ) (char const *, char const *);
55+bool lines_differ_singlebyte (char const *, char const *);
56+#ifdef HANDLE_MULTIBYTE
57+bool lines_differ_multibyte (char const *, char const *);
58+#endif
59+
60 lin translate_line_number (struct file_data const *, lin);
61 struct change *find_change (struct change *);
62 struct change *find_reverse_change (struct change *);
63diff -Naur diffutils-2.8.7.orig/src/io.c diffutils-2.8.7/src/io.c
64--- diffutils-2.8.7.orig/src/io.c 2004-04-12 00:44:35.000000000 -0700
65+++ diffutils-2.8.7/src/io.c 2009-01-08 13:26:42.000000000 -0800
66@@ -25,6 +25,7 @@
67 #include <file-type.h>
68 #include <setmode.h>
69 #include <xalloc.h>
70+#include <assert.h>
71
72 /* Rotate an unsigned value to the left. */
73 #define ROL(v, n) ((v) << (n) | (v) >> (sizeof (v) * CHAR_BIT - (n)))
74@@ -212,6 +213,28 @@
75
76
77 /* Split the file into lines, simultaneously computing the equivalence
78 class for each line. */
79+#ifdef HANDLE_MULTIBYTE
80+# define MBC2WC(P, END, MBLENGTH, WC, STATE, CONVFAIL) \
81+do \
82+{ \
83+ mbstate_t state_bak = STATE; \
84+ \
85+ CONVFAIL = 0; \
86+ MBLENGTH = mbrtowc (&WC, P, END - (char const *)P, &STATE); \
87+ \
88+ switch (MBLENGTH) \
89+ { \
90+ case (size_t)-2: \
91+ case (size_t)-1: \
92+ STATE = state_bak; \
93+ ++CONVFAIL; \
94+ /* Fall through. */ \
95+ case 0: \
96+ MBLENGTH = 1; \
97+ } \
98+} \
99+while (0)
100+#endif
101
102 static void
103 find_and_hash_each_line (struct file_data *current)
104@@ -238,12 +261,280 @@
105 bool same_length_diff_contents_compare_anyway =
106 diff_length_compare_anyway | ignore_case;
107
108+#ifdef HANDLE_MULTIBYTE
109+ wchar_t wc;
110+ size_t mblength;
111+ mbstate_t state;
112+ int convfail;
113+
114+ memset (&state, '\0', sizeof (mbstate_t));
115+#endif
116+
117 while (p < suffix_begin)
118 {
119 char const *ip = p;
120
121 h = 0;
122+#ifdef HANDLE_MULTIBYTE
123+ if (MB_CUR_MAX > 1)
124+ {
125+ wchar_t lo_wc;
126+ char mbc[MB_LEN_MAX];
127+ mbstate_t state_wc;
128+
129+ /* Hash this line until we find a newline. */
130+ switch (ignore_white_space)
131+ {
132+ case IGNORE_ALL_SPACE:
133+ while (1)
134+ {
135+ if (*p == '\n')
136+ {
137+ ++p;
138+ break;
139+ }
140+
141+ MBC2WC (p, suffix_begin, mblength, wc, state, convfail);
142+
143+ if (convfail)
144+ mbc[0] = *p++;
145+ else if (!iswspace (wc))
146+ {
147+ bool flag = 0;
148+
149+ if (ignore_case)
150+ {
151+ lo_wc = towlower (wc);
152+ if (lo_wc != wc)
153+ {
154+ flag = 1;
155+
156+ p += mblength;
157+ memset (&state_wc, '\0', sizeof(mbstate_t));
158+ mblength = wcrtomb (mbc, lo_wc, &state_wc);
159+
160+ assert (mblength != (size_t)-1 &&
161+ mblength != (size_t)-2);
162+
163+ mblength = (mblength < 1) ? 1 : mblength;
164+ }
165+ }
166+
167+ if (!flag)
168+ {
169+ for (i = 0; i < mblength; i++)
170+ mbc[i] = *p++;
171+ }
172+ }
173+ else
174+ {
175+ p += mblength;
176+ continue;
177+ }
178+
179+ for (i = 0; i < mblength; i++)
180+ h = HASH (h, mbc[i]);
181+ }
182+ break;
183+
184+ case IGNORE_SPACE_CHANGE:
185+ while (1)
186+ {
187+ if (*p == '\n')
188+ {
189+ ++p;
190+ break;
191+ }
192
193+ MBC2WC (p, suffix_begin, mblength, wc, state, convfail);
194+
195+ if (!convfail && iswspace (wc))
196+ {
197+ while (1)
198+ {
199+ if (*p == '\n')
200+ {
201+ ++p;
202+ goto hashing_done;
203+ }
204+
205+ p += mblength;
206+ MBC2WC (p, suffix_begin, mblength, wc, state, convfail);
207+ if (convfail || (!convfail && !iswspace (wc)))
208+ break;
209+ }
210+ h = HASH (h, ' ');
211+ }
212+
213+ /* WC is now the first non-space. */
214+ if (convfail)
215+ mbc[0] = *p++;
216+ else
217+ {
218+ bool flag = 0;
219+
220+ if (ignore_case)
221+ {
222+ lo_wc = towlower (wc);
223+ if (lo_wc != wc)
224+ {
225+ flag = 1;
226+
227+ p += mblength;
228+ memset (&state_wc, '\0', sizeof(mbstate_t));
229+ mblength = wcrtomb (mbc, lo_wc, &state_wc);
230+
231+ assert (mblength != (size_t)-1 &&
232+ mblength != (size_t)-2);
233+
234+ mblength = (mblength < 1) ? 1 : mblength;
235+ }
236+ }
237+
238+ if (!flag)
239+ {
240+ for (i = 0; i < mblength; i++)
241+ mbc[i] = *p++;
242+ }
243+ }
244+
245+ for (i = 0; i < mblength; i++)
246+ h = HASH (h, mbc[i]);
247+ }
248+ break;
249+
250+ case IGNORE_TAB_EXPANSION:
251+ {
252+ size_t column = 0;
253+
254+ while (1)
255+ {
256+ if (*p == '\n')
257+ {
258+ ++p;
259+ break;
260+ }
261+
262+ MBC2WC (p, suffix_begin, mblength, wc, state, convfail);
263+
264+ if (convfail)
265+ {
266+ h = HASH (h, *p++);
267+ ++column;
268+ }
269+ else
270+ {
271+ bool flag;
272+
273+ switch (wc)
274+ {
275+ case L'\b':
276+ column -= 0 < column;
277+ h = HASH (h, '\b');
278+ ++p;
279+ break;
280+
281+ case L'\t':
282+ {
283+ int repetitions;
284+
285+ repetitions = TAB_WIDTH - column % TAB_WIDTH;
286+ column += repetitions;
287+ do
288+ h = HASH (h, ' ');
289+ while (--repetitions != 0);
290+ ++p;
291+ }
292+ break;
293+
294+ case L'\r':
295+ column = 0;
296+ h = HASH (h, '\r');
297+ ++p;
298+ break;
299+
300+ default:
301+ flag = 0;
302+ column += wcwidth (wc);
303+ if (ignore_case)
304+ {
305+ lo_wc = towlower (wc);
306+ if (lo_wc != wc)
307+ {
308+ flag = 1;
309+ p += mblength;
310+ memset (&state_wc, '\0', sizeof(mbstate_t));
311+ mblength = wcrtomb (mbc, lo_wc, &state_wc);
312+
313+ assert (mblength != (size_t)-1 &&
314+ mblength != (size_t)-2);
315+
316+ mblength = (mblength < 1) ? 1 : mblength;
317+ }
318+ }
319+
320+ if (!flag)
321+ {
322+ for (i = 0; i < mblength; i++)
323+ mbc[i] = *p++;
324+ }
325+
326+ for (i = 0; i < mblength; i++)
327+ h = HASH (h, mbc[i]);
328+ }
329+ }
330+ }
331+ }
332+ break;
333+
334+ default:
335+ while (1)
336+ {
337+ if (*p == '\n')
338+ {
339+ ++p;
340+ break;
341+ }
342+
343+ MBC2WC (p, suffix_begin, mblength, wc, state, convfail);
344+
345+ if (convfail)
346+ mbc[0] = *p++;
347+ else
348+ {
349+ int flag = 0;
350+
351+ if (ignore_case)
352+ {
353+ lo_wc = towlower (wc);
354+ if (lo_wc != wc)
355+ {
356+ flag = 1;
357+ p += mblength;
358+ memset (&state_wc, '\0', sizeof(mbstate_t));
359+ mblength = wcrtomb (mbc, lo_wc, &state_wc);
360+
361+ assert (mblength != (size_t)-1 &&
362+ mblength != (size_t)-2);
363+
364+ mblength = (mblength < 1) ? 1 : mblength;
365+ }
366+ }
367+
368+ if (!flag)
369+ {
370+ for (i = 0; i < mblength; i++)
371+ mbc[i] = *p++;
372+ }
373+ }
374+
375+ for (i = 0; i < mblength; i++)
376+ h = HASH (h, mbc[i]);
377+ }
378+ }
379+ }
380+ else
381+#endif
382 /* Hash this line until we find a newline. */
383 if (ignore_case)
384 switch (ignore_white_space)
385diff -Naur diffutils-2.8.7.orig/src/side.c diffutils-2.8.7/src/side.c
386--- diffutils-2.8.7.orig/src/side.c 2004-04-12 00:44:35.000000000 -0700
387+++ diffutils-2.8.7/src/side.c 2009-01-08 13:26:42.000000000 -0800
388@@ -73,11 +73,72 @@
389 register size_t out_position = 0;
390 register char const *text_pointer = line[0];
391 register char const *text_limit = line[1];
392+#if defined HAVE_WCHAR_H && defined HAVE_WCTYPE_H
393+ unsigned char mbc[MB_LEN_MAX];
394+ wchar_t wc;
395+ mbstate_t state, state_bak;
396+ size_t mbc_pos, mblength;
397+ int mbc_loading_flag = 0;
398+ int wc_width;
399+
400+ memset (&state, '\0', sizeof (mbstate_t));
401+#endif
402
403 while (text_pointer < text_limit)
404 {
405 register unsigned char c = *text_pointer++;
406
407+#if defined HAVE_WCHAR_H && defined HAVE_WCTYPE_H
408+ if (MB_CUR_MAX > 1 && mbc_loading_flag)
409+ {
410+ mbc_loading_flag = 0;
411+ state_bak = state;
412+ mbc[mbc_pos++] = c;
413+
414+process_mbc:
415+ mblength = mbrtowc (&wc, mbc, mbc_pos, &state);
416+
417+ switch (mblength)
418+ {
419+ case (size_t)-2: /* Incomplete multibyte character. */
420+ mbc_loading_flag = 1;
421+ state = state_bak;
422+ break;
423+
424+ case (size_t)-1: /* Invalid as a multibyte character. */
425+ if (in_position++ < out_bound)
426+ {
427+ out_position = in_position;
428+ putc (mbc[0], out);
429+ }
430+ memmove (mbc, mbc + 1, --mbc_pos);
431+ if (mbc_pos > 0)
432+ {
433+ mbc[mbc_pos] = '\0';
434+ goto process_mbc;
435+ }
436+ break;
437+
438+ default:
439+ wc_width = wcwidth (wc);
440+ if (wc_width < 1) /* Unprintable multibyte character. */
441+ {
442+ if (in_position <= out_bound)
443+ fprintf (out, "%lc", (wint_t)wc);
444+ }
445+ else /* Printable multibyte character. */
446+ {
447+ in_position += wc_width;
448+ if (in_position <= out_bound)
449+ {
450+ out_position = in_position;
451+ fprintf (out, "%lc", (wint_t)wc);
452+ }
453+ }
454+ }
455+ continue;
456+ }
457+#endif
458 switch (c)
459 {
460 case '\t':
461@@ -135,8 +196,39 @@
462 break;
463
464 default:
465- if (! isprint (c))
466- goto control_char;
467+#if defined HAVE_WCHAR_H && defined HAVE_WCTYPE_H
468+ if (MB_CUR_MAX > 1)
469+ {
470+ memset (mbc, '\0', MB_LEN_MAX);
471+ mbc_pos = 0;
472+ mbc[mbc_pos++] = c;
473+ state_bak = state;
474+
475+ mblength = mbrtowc (&wc, mbc, mbc_pos, &state);
476+
477+ /* The value of mblength is always less than 2 here. */
478+ switch (mblength)
479+ {
480+ case (size_t)-2: /* Incomplete multibyte character. */
481+ state = state_bak;
482+ mbc_loading_flag = 1;
483+ continue;
484+
485+ case (size_t)-1: /* Invalid as a multibyte character. */
486+ state = state_bak;
487+ break;
488+
489+ default:
490+ if (! iswprint (wc))
491+ goto control_char;
492+ }
493+ }
494+ else
495+#endif
496+ {
497+ if (! isprint (c))
498+ goto control_char;
499+ }
500 /* falls through */
501 case ' ':
502 if (in_position++ < out_bound)
503diff -Naur diffutils-2.8.7.orig/src/util.c diffutils-2.8.7/src/util.c
504--- diffutils-2.8.7.orig/src/util.c 2004-04-12 00:44:35.000000000 -0700
505+++ diffutils-2.8.7/src/util.c 2009-01-08 13:26:42.000000000 -0800
506@@ -319,7 +319,7 @@
507 Return nonzero if the lines differ. */
508
509 bool
510-lines_differ (char const *s1, char const *s2)
511+lines_differ_singlebyte (char const *s1, char const *s2)
512 {
513 register char const *t1 = s1;
514 register char const *t2 = s2;
515@@ -458,6 +458,293 @@
516 return start;
517 }
518
519+#ifdef HANDLE_MULTIBYTE
520+# define MBC2WC(T, END, MBLENGTH, WC, STATE, CONVFAIL) \
521+do \
522+{ \
523+ mbstate_t bak = STATE; \
524+ \
525+ CONVFAIL = 0; \
526+ MBLENGTH = mbrtowc (&WC, T, END - T, &STATE); \
527+ \
528+ switch (MBLENGTH) \
529+ { \
530+ case (size_t)-2: \
531+ case (size_t)-1: \
532+ STATE = bak; \
533+ ++CONVFAIL; \
534+ /* Fall through. */ \
535+ case 0: \
536+ MBLENGTH = 1; \
537+ } \
538+} \
539+while (0)
540+
541+bool
542+lines_differ_multibyte (char const *s1, char const *s2)
543+{
544+ unsigned char const *end1, *end2;
545+ unsigned char c1, c2;
546+ wchar_t wc1, wc2, wc1_bak, wc2_bak;
547+ size_t mblen1, mblen2;
548+ mbstate_t state1, state2, state1_bak, state2_bak;
549+ int convfail1, convfail2, convfail1_bak, convfail2_bak;
550+
551+ unsigned char const *t1 = (unsigned char const *) s1;
552+ unsigned char const *t2 = (unsigned char const *) s2;
553+ unsigned char const *t1_bak, *t2_bak;
554+ size_t column = 0;
555+
556+ if (ignore_white_space == IGNORE_NO_WHITE_SPACE && !ignore_case)
557+ {
558+ while (*t1 != '\n')
559+ if (*t1++ != * t2++)
560+ return 1;
561+ return 0;
562+ }
563+
564+ memset (&state1, '\0', sizeof (mbstate_t));
565+ memset (&state2, '\0', sizeof (mbstate_t));
566+
567+ end1 = s1 + strlen (s1);
568+ end2 = s2 + strlen (s2);
569+
570+ while (1)
571+ {
572+ c1 = *t1;
573+ c2 = *t2;
574+ MBC2WC (t1, end1, mblen1, wc1, state1, convfail1);
575+ MBC2WC (t2, end2, mblen2, wc2, state2, convfail2);
576+
577+ /* Test for exact char equality first, since it's a common case. */
578+ if (convfail1 ^ convfail2)
579+ break;
580+ else if (convfail1 && convfail2 && c1 != c2)
581+ break;
582+ else if (!convfail1 && !convfail2 && wc1 != wc2)
583+ {
584+ switch (ignore_white_space)
585+ {
586+ case IGNORE_ALL_SPACE:
587+ /* For -w, just skip past any white space. */
588+ while (1)
589+ {
590+ if (convfail1)
591+ break;
592+ else if (wc1 == L'\n' || !iswspace (wc1))
593+ break;
594+
595+ t1 += mblen1;
596+ c1 = *t1;
597+ MBC2WC (t1, end1, mblen1, wc1, state1, convfail1);
598+ }
599+
600+ while (1)
601+ {
602+ if (convfail2)
603+ break;
604+ else if (wc2 == L'\n' || !iswspace (wc2))
605+ break;
606+
607+ t2 += mblen2;
608+ c2 = *t2;
609+ MBC2WC (t2, end2, mblen2, wc2, state2, convfail2);
610+ }
611+ t1 += mblen1;
612+ t2 += mblen2;
613+ break;
614+
615+ case IGNORE_SPACE_CHANGE:
616+ /* For -b, advance past any sequence of white space in
617+ line 1 and consider it just one space, or nothing at
618+ all if it is at the end of the line. */
619+ if (wc1 != L'\n' && iswspace (wc1))
620+ {
621+ size_t mblen_bak;
622+ mbstate_t state_bak;
623+
624+ do
625+ {
626+ t1 += mblen1;
627+ mblen_bak = mblen1;
628+ state_bak = state1;
629+ MBC2WC (t1, end1, mblen1, wc1, state1, convfail1);
630+ }
631+ while (!convfail1 && (wc1 != L'\n' && iswspace (wc1)));
632+
633+ state1 = state_bak;
634+ mblen1 = mblen_bak;
635+ t1 -= mblen1;
636+ convfail1 = 0;
637+ wc1 = L' ';
638+ }
639+
640+ /* Likewise for line 2. */
641+ if (wc2 != L'\n' && iswspace (wc2))
642+ {
643+ size_t mblen_bak;
644+ mbstate_t state_bak;
645+
646+ do
647+ {
648+ t2 += mblen2;
649+ mblen_bak = mblen2;
650+ state_bak = state2;
651+ MBC2WC (t2, end2, mblen2, wc2, state2, convfail2);
652+ }
653+ while (!convfail2 && (wc2 != L'\n' && iswspace (wc2)));
654+
655+ state2 = state_bak;
656+ mblen2 = mblen_bak;
657+ t2 -= mblen2;
658+ convfail2 = 0;
659+ wc2 = L' ';
660+ }
661+
662+ if (wc1 != wc2)
663+ {
664+ if (wc2 == L' ' && wc1 != L'\n' &&
665+ t1 > (unsigned char const *)s1 &&
666+ !convfail1_bak && iswspace (wc1_bak))
667+ {
668+ t1 = t1_bak;
669+ wc1 = wc1_bak;
670+ state1 = state1_bak;
671+ convfail1 = convfail1_bak;
672+ continue;
673+ }
674+ if (wc1 == L' ' && wc2 != L'\n'
675+ && t2 > (unsigned char const *)s2
676+ && !convfail2_bak && iswspace (wc2_bak))
677+ {
678+ t2 = t2_bak;
679+ wc2 = wc2_bak;
680+ state2 = state2_bak;
681+ convfail2 = convfail2_bak;
682+ continue;
683+ }
684+ }
685+
686+ t1_bak = t1; t2_bak = t2;
687+ wc1_bak = wc1; wc2_bak = wc2;
688+ state1_bak = state1; state2_bak = state2;
689+ convfail1_bak = convfail1; convfail2_bak = convfail2;
690+
691+ if (wc1 == L'\n')
692+ wc1 = L' ';
693+ else
694+ t1 += mblen1;
695+
696+ if (wc2 == L'\n')
697+ wc2 = L' ';
698+ else
699+ t2 += mblen2;
700+
701+ break;
702+
703+ case IGNORE_TAB_EXPANSION:
704+ if ((wc1 == L' ' && wc2 == L'\t')
705+ || (wc1 == L'\t' && wc2 == L' '))
706+ {
707+ size_t column2 = column;
708+
709+ while (1)
710+ {
711+ if (convfail1)
712+ {
713+ ++t1;
714+ break;
715+ }
716+ else if (wc1 == L' ')
717+ column++;
718+ else if (wc1 == L'\t')
719+ column += TAB_WIDTH - column % TAB_WIDTH;
720+ else
721+ {
722+ t1 += mblen1;
723+ break;
724+ }
725+
726+ t1 += mblen1;
727+ c1 = *t1;
728+ MBC2WC (t1, end1, mblen1, wc1, state1, convfail1);
729+ }
730+
731+ while (1)
732+ {
733+ if (convfail2)
734+ {
735+ ++t2;
736+ break;
737+ }
738+ else if (wc2 == L' ')
739+ column2++;
740+ else if (wc2 == L'\t')
741+ column2 += TAB_WIDTH - column2 % TAB_WIDTH;
742+ else
743+ {
744+ t2 += mblen2;
745+ break;
746+ }
747+
748+ t2 += mblen2;
749+ c2 = *t2;
750+ MBC2WC (t2, end2, mblen2, wc2, state2, convfail2);
751+ }
752+
753+ if (column != column2)
754+ return 1;
755+ }
756+ else
757+ {
758+ t1 += mblen1;
759+ t2 += mblen2;
760+ }
761+ break;
762+
763+ case IGNORE_NO_WHITE_SPACE:
764+ t1 += mblen1;
765+ t2 += mblen2;
766+ break;
767+ }
768+
769+ /* Lowercase all letters if -i is specified. */
770+ if (ignore_case)
771+ {
772+ if (!convfail1)
773+ wc1 = towlower (wc1);
774+ if (!convfail2)
775+ wc2 = towlower (wc2);
776+ }
777+
778+ if (convfail1 ^ convfail2)
779+ break;
780+ else if (convfail1 && convfail2 && c1 != c2)
781+ break;
782+ else if (!convfail1 && !convfail2 && wc1 != wc2)
783+ break;
784+ }
785+ else
786+ {
787+ t1_bak = t1; t2_bak = t2;
788+ wc1_bak = wc1; wc2_bak = wc2;
789+ state1_bak = state1; state2_bak = state2;
790+ convfail1_bak = convfail1; convfail2_bak = convfail2;
791+
792+ t1 += mblen1; t2 += mblen2;
793+ }
794+
795+ if (!convfail1 && wc1 == L'\n')
796+ return 0;
797+
798+ column += convfail1 ? 1 :
799+ (wc1 == L'\t') ? TAB_WIDTH - column % TAB_WIDTH : wcwidth (wc1);
800+ }
801+
802+ return 1;
803+}
804+#endif
805+
806 struct change *
807 find_reverse_change (struct change *start)
808 {
809
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