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pascal@21761
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1 --- busybox-1.31/editors/diff.c
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2 +++ busybox-1.31/editors/diff.c
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3 @@ -109,6 +109,7 @@
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4 //usage: "\n -B Ignore changes whose lines are all blank"
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5 //usage: "\n -d Try hard to find a smaller set of changes"
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6 //usage: "\n -i Ignore case differences"
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7 +//usage: "\n -l Ignore symbolic links"
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8 //usage: "\n -L Use LABEL instead of the filename in the unified header"
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9 //usage: "\n -N Treat absent files as empty"
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10 //usage: "\n -q Output only whether files differ"
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11 @@ -140,6 +141,7 @@
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12 FLAG_b,
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13 FLAG_d,
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14 FLAG_i,
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15 + FLAG_l,
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16 FLAG_L, /* never used, handled by getopt32 */
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17 FLAG_N,
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18 FLAG_q,
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19 @@ -754,6 +756,14 @@
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20 j = fread(buf1, 1, sz, fp[1]);
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21 if (i != j) {
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22 differ = true;
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23 + /* Ensure we detect binary file even if a file is empty or very
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24 + short. */
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25 + for (k = 0; k < i; k++)
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26 + if (!buf0[k])
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27 + binary = true;
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28 + for (k = 0; k < j; k++)
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29 + if (!buf1[k])
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30 + binary = true;
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31 i = MIN(i, j);
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32 }
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33 if (i == 0)
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34 @@ -867,7 +877,9 @@
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35 * Using list.len to specify its length,
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36 * add_to_dirlist will remove it. */
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37 list[i].len = strlen(p[i]);
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38 - recursive_action(p[i], ACTION_RECURSE | ACTION_FOLLOWLINKS,
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39 + recursive_action(p[i],
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40 + (option_mask32 & FLAG(l)) ? ACTION_RECURSE :
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41 + ACTION_RECURSE | ACTION_FOLLOWLINKS,
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42 add_to_dirlist, skip_dir, &list[i], 0);
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43 /* Sort dl alphabetically.
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44 * GNU diff does this ignoring any number of trailing dots.
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45 @@ -982,7 +994,7 @@
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46 INIT_G();
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47
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48 /* exactly 2 params; collect multiple -L <label>; -U N */
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49 - GETOPT32(argv, "^" "abdiL:*NqrsS:tTU:+wupBE" "\0" "=2"
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50 + GETOPT32(argv, "^" "abdilL:*NqrsS:tTU:+wupBE" "\0" "=2"
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51 LONGOPTS,
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52 &L_arg, &s_start, &opt_U_context);
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53 argv += optind;
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