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#include "env.h"
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#include "env.h"
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#include "helpers.h"
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#include "helpers.h"
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/* case-insensitive comparison of strings, returns non-zero on equality */
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/* case-insensitive comparison of strings, compares up to maxlen characters.
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 * returns non-zero on equality. */
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int imatch(const char *s1, const char *s2) {
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int imatchlim(const char *s1, const char *s2, unsigned short maxlen) {
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  for (;;) {
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  while (maxlen--) {
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    char c1, c2;
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    char c1, c2;
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    c1 = *s1;
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    c1 = *s1;
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    c2 = *s2;
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    c2 = *s2;
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    if ((c1 >= 'a') && (c1 <= 'z')) c1 -= ('a' - 'A');
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    if ((c1 >= 'a') && (c1 <= 'z')) c1 -= ('a' - 'A');
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    if ((c2 >= 'a') && (c2 <= 'z')) c2 -= ('a' - 'A');
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    if ((c2 >= 'a') && (c2 <= 'z')) c2 -= ('a' - 'A');
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    /* */
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    /* */
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    if (c1 != c2) return(0);
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    if (c1 != c2) return(0);
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    if (c1 == 0) return(1);
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    if (c1 == 0) break;
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    s1++;
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    s1++;
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    s2++;
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    s2++;
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  }
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  }
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  return(1);
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}
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}
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/* returns zero if s1 starts with s2 */
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/* returns zero if s1 starts with s2 */
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int strstartswith(const char *s1, const char *s2) {
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int strstartswith(const char *s1, const char *s2) {