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tar: handle "tar fx TARFILE" etc
function old new delta tar_main 702 751 +49 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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@ -840,6 +840,33 @@ int tar_main(int argc UNUSED_PARAM, char **argv)
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IF_NOT_FEATURE_TAR_CREATE("t--x:x--t"); // mutually exclusive
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#if ENABLE_FEATURE_TAR_LONG_OPTIONS
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applet_long_options = tar_longopts;
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#endif
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#if ENABLE_DESKTOP
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if (argv[1][0] != '-') {
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/* Compat:
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* 1st argument without dash handles options with parameters
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* differently from dashed one: it takes *next argv[i]*
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* as paramenter even if there are more chars in 1st argument:
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* "tar fx TARFILE" - "x" is not taken as f's param
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* but is interpreted as -x option
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* "tar -xf TARFILE" - dashed equivalent of the above
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* "tar -fx ..." - "x" is taken as f's param
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* getopt32 wouldn't handle 1st command correctly.
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* Unfortunately, people do use such commands.
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* We massage argv[1] to work around it by moving 'f'
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* to the end of the string.
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* More contrived "tar fCx TARFILE DIR" still fails,
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* but such commands are much less likely to be used.
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*/
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char *f = strchr(argv[1], 'f');
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if (f) {
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while (f[1] != '\0') {
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*f = f[1];
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f++;
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}
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*f = 'f';
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}
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}
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#endif
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opt = getopt32(argv,
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"txC:f:Opvk"
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