components/vim/vim72-patches/7.2.245
changeset 198 172fc01ce997
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197:fd801ec0737c 198:172fc01ce997
       
     1 To: [email protected]
       
     2 Subject: Patch 7.2.245
       
     3 Fcc: outbox
       
     4 From: Bram Moolenaar <[email protected]>
       
     5 Mime-Version: 1.0
       
     6 Content-Type: text/plain; charset=UTF-8
       
     7 Content-Transfer-Encoding: 8bit
       
     8 ------------
       
     9 
       
    10 Patch 7.2.245
       
    11 Problem:    When 'enc' is "utf-16" and 'fenc' is "utf-8" writing a file does
       
    12 	    conversion while none should be done. (Yukihiro Nakadaira) When
       
    13 	    'fenc' is empty the file is written as utf-8 instead of utf-16.
       
    14 Solution:   Do proper comparison of encodings, taking into account that all
       
    15 	    Unicode values for 'enc' use utf-8 internally.
       
    16 Files:	    src/fileio.c
       
    17 
       
    18 
       
    19 *** ../vim-7.2.244/src/fileio.c	2009-07-29 18:05:57.000000000 +0200
       
    20 --- src/fileio.c	2009-07-29 17:04:06.000000000 +0200
       
    21 ***************
       
    22 *** 134,140 ****
       
    23   #ifdef FEAT_MBYTE
       
    24   static linenr_T readfile_linenr __ARGS((linenr_T linecnt, char_u *p, char_u *endp));
       
    25   static int ucs2bytes __ARGS((unsigned c, char_u **pp, int flags));
       
    26 ! static int same_encoding __ARGS((char_u *a, char_u *b));
       
    27   static int get_fio_flags __ARGS((char_u *ptr));
       
    28   static char_u *check_for_bom __ARGS((char_u *p, long size, int *lenp, int flags));
       
    29   static int make_bom __ARGS((char_u *buf, char_u *name));
       
    30 --- 134,140 ----
       
    31   #ifdef FEAT_MBYTE
       
    32   static linenr_T readfile_linenr __ARGS((linenr_T linecnt, char_u *p, char_u *endp));
       
    33   static int ucs2bytes __ARGS((unsigned c, char_u **pp, int flags));
       
    34 ! static int need_conversion __ARGS((char_u *fenc));
       
    35   static int get_fio_flags __ARGS((char_u *ptr));
       
    36   static char_u *check_for_bom __ARGS((char_u *p, long size, int *lenp, int flags));
       
    37   static int make_bom __ARGS((char_u *buf, char_u *name));
       
    38 ***************
       
    39 *** 1043,1055 ****
       
    40       }
       
    41   
       
    42       /*
       
    43 !      * Conversion is required when the encoding of the file is different
       
    44 !      * from 'encoding' or 'encoding' is UTF-16, UCS-2 or UCS-4 (requires
       
    45 !      * conversion to UTF-8).
       
    46        */
       
    47       fio_flags = 0;
       
    48 !     converted = (*fenc != NUL && !same_encoding(p_enc, fenc));
       
    49 !     if (converted || enc_unicode != 0)
       
    50       {
       
    51   
       
    52   	/* "ucs-bom" means we need to check the first bytes of the file
       
    53 --- 1043,1054 ----
       
    54       }
       
    55   
       
    56       /*
       
    57 !      * Conversion may be required when the encoding of the file is different
       
    58 !      * from 'encoding' or 'encoding' is UTF-16, UCS-2 or UCS-4.
       
    59        */
       
    60       fio_flags = 0;
       
    61 !     converted = need_conversion(fenc);
       
    62 !     if (converted)
       
    63       {
       
    64   
       
    65   	/* "ucs-bom" means we need to check the first bytes of the file
       
    66 ***************
       
    67 *** 3969,3978 ****
       
    68   	fenc = buf->b_p_fenc;
       
    69   
       
    70       /*
       
    71 !      * The file needs to be converted when 'fileencoding' is set and
       
    72 !      * 'fileencoding' differs from 'encoding'.
       
    73        */
       
    74 !     converted = (*fenc != NUL && !same_encoding(p_enc, fenc));
       
    75   
       
    76       /*
       
    77        * Check if UTF-8 to UCS-2/4 or Latin1 conversion needs to be done.  Or
       
    78 --- 3968,3976 ----
       
    79   	fenc = buf->b_p_fenc;
       
    80   
       
    81       /*
       
    82 !      * Check if the file needs to be converted.
       
    83        */
       
    84 !     converted = need_conversion(fenc);
       
    85   
       
    86       /*
       
    87        * Check if UTF-8 to UCS-2/4 or Latin1 conversion needs to be done.  Or
       
    88 ***************
       
    89 *** 5502,5521 ****
       
    90   }
       
    91   
       
    92   /*
       
    93 !  * Return TRUE if "a" and "b" are the same 'encoding'.
       
    94 !  * Ignores difference between "ansi" and "latin1", "ucs-4" and "ucs-4be", etc.
       
    95    */
       
    96       static int
       
    97 ! same_encoding(a, b)
       
    98 !     char_u	*a;
       
    99 !     char_u	*b;
       
   100   {
       
   101 !     int		f;
       
   102   
       
   103 !     if (STRCMP(a, b) == 0)
       
   104 ! 	return TRUE;
       
   105 !     f = get_fio_flags(a);
       
   106 !     return (f != 0 && get_fio_flags(b) == f);
       
   107   }
       
   108   
       
   109   /*
       
   110 --- 5500,5536 ----
       
   111   }
       
   112   
       
   113   /*
       
   114 !  * Return TRUE if file encoding "fenc" requires conversion from or to
       
   115 !  * 'encoding'.
       
   116    */
       
   117       static int
       
   118 ! need_conversion(fenc)
       
   119 !     char_u	*fenc;
       
   120   {
       
   121 !     int		same_encoding;
       
   122 !     int		enc_flags;
       
   123 !     int		fenc_flags;
       
   124   
       
   125 !     if (*fenc == NUL || STRCMP(p_enc, fenc) == 0)
       
   126 ! 	same_encoding = TRUE;
       
   127 !     else
       
   128 !     {
       
   129 ! 	/* Ignore difference between "ansi" and "latin1", "ucs-4" and
       
   130 ! 	 * "ucs-4be", etc. */
       
   131 ! 	enc_flags = get_fio_flags(p_enc);
       
   132 ! 	fenc_flags = get_fio_flags(fenc);
       
   133 ! 	same_encoding = (enc_flags != 0 && fenc_flags == enc_flags);
       
   134 !     }
       
   135 !     if (same_encoding)
       
   136 !     {
       
   137 ! 	/* Specified encoding matches with 'encoding'.  This requires
       
   138 ! 	 * conversion when 'encoding' is Unicode but not UTF-8. */
       
   139 ! 	return enc_unicode != 0;
       
   140 !     }
       
   141 ! 
       
   142 !     /* Encodings differ.  However, conversion is not needed when 'enc' is any
       
   143 !      * Unicode encoding and the file is UTF-8. */
       
   144 !     return !(enc_utf8 && fenc_flags == FIO_UTF8);
       
   145   }
       
   146   
       
   147   /*
       
   148 *** ../vim-7.2.244/src/version.c	2009-07-29 18:05:57.000000000 +0200
       
   149 --- src/version.c	2009-07-29 18:20:08.000000000 +0200
       
   150 ***************
       
   151 *** 678,679 ****
       
   152 --- 678,681 ----
       
   153   {   /* Add new patch number below this line */
       
   154 + /**/
       
   155 +     245,
       
   156   /**/
       
   157 
       
   158 -- 
       
   159 An actual excerpt from a classified section of a city newspaper:
       
   160 "Illiterate?  Write today for free help!"
       
   161 
       
   162  /// Bram Moolenaar -- [email protected] -- http://www.Moolenaar.net   \\\
       
   163 ///        sponsor Vim, vote for features -- http://www.Vim.org/sponsor/ \\\
       
   164 \\\        download, build and distribute -- http://www.A-A-P.org        ///
       
   165  \\\            help me help AIDS victims -- http://ICCF-Holland.org    ///