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str2wcs: encode invalid Unicode characters in the private use area

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Rust does not like invalid code points, so let's ease the transition by
treating them like byte sequences that do not map to any code point.
See https://github.com/fish-shell/fish-shell/pull/9688#discussion_r1155089596
This commit is contained in:
Johannes Altmanninger 2023-04-01 12:23:28 +02:00
parent 746019e4ad
commit 3b15e995e7
1 changed files with 2 additions and 0 deletions
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src/common.cpp
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@ -338,6 +338,8 @@ static wcstring str2wcs_internal(const char *in, const size_t in_len) {
// Determine whether to encode this character with our crazy scheme.
if (wc >= ENCODE_DIRECT_BASE && wc < ENCODE_DIRECT_BASE + 256) {
use_encode_direct = true;
} else if ((wc >= 0xD800 && wc <= 0xDFFF) || static_cast<uint32_t>(wc) >= 0x110000) {
use_encode_direct = true;
} else if (wc == INTERNAL_SEPARATOR) {
use_encode_direct = true;
} else if (ret == static_cast<size_t>(-2)) {