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b2/subex.c (compose): use stralloc_n instead of open-coding its functionality
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@ -92,7 +92,7 @@ static char *compose(const struct chunk *c,
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const char *s, const regmatch_t *match, const char *units)
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{
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char *res = stralloc("");
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int res_len = 0, len;
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int res_len = 0;
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const char *val;
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char *tmp, *tmp2;
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int n;
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@ -118,10 +118,8 @@ static char *compose(const struct chunk *c,
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}
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if (match[n].rm_so == -1)
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break;
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len = match[n].rm_eo-match[n].rm_so;
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tmp = alloc_size(len);
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memcpy(tmp, s+match[n].rm_so, len);
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tmp[len] = 0;
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tmp = stralloc_n(s+match[n].rm_so,
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match[n].rm_eo-match[n].rm_so);
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tmp2 = canonicalize(tmp, units ? units[n-1] : 0);
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append(&res, &res_len, tmp2);
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free(tmp);
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