macos: normalize unicode file names: store as NFC, read as NFDnfc_v2

This commit resolves https://github.com/rfjakob/gocryptfs/issues/850
by addressing Unicode normalization mismatches on macOS between NFC
(used by CLI tools) and NFD (used by GUI apps). The solution is inspired
by Cryptomator's approach ( https://github.com/cryptomator/cryptomator/issues/264 ).

Forward mode on MacOS now enforces NFC for storage but presents NFD
as recommended by https://developer.apple.com/library/archive/qa/qa1173/_index.html
and https://github.com/macfuse/macfuse/wiki/File-Names-(Unicode-Normalization-Forms) .

See https://github.com/rfjakob/gocryptfs/pull/949 for more info.

1 files changed, 1 insertions, 0 deletions

diff --git a/go.mod b/go.mod
index c608e6f..986f329 100644
--- a/go.mod
+++ b/go.mod
@@ -13,4 +13,5 @@ require (
 	golang.org/x/crypto v0.45.0
 	golang.org/x/sys v0.38.0
 	golang.org/x/term v0.37.0
+	golang.org/x/text v0.31.0
 )