add doc. shenwei356#462

tetukas · May 17, 2024 · f56b39c · f56b39c
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diff --git a/doc/docs/usage.md b/doc/docs/usage.md
@@ -2552,6 +2552,8 @@ If you want to cut a sequence into multiple segments.
 Attention:
   1. For the two-pass mode (-2/--two-pass), The flag -U/--update-faidx is recommended to
      ensure the .fai file matches the FASTA file.
+  2. For splitting by sequence IDs in Windows/MacOS, where the file systems might be case-insensitive,
+     output files might be overwritten if they are only different in cases, like Abc and ABC.
 
 The definition of region is 1-based and with some custom design.
 

diff --git a/seqkit/cmd/split.go b/seqkit/cmd/split.go
@@ -63,6 +63,8 @@ If you want to cut a sequence into multiple segments.
 Attention:
   1. For the two-pass mode (-2/--two-pass), The flag -U/--update-faidx is recommended to
      ensure the .fai file matches the FASTA file.
+  2. For splitting by sequence IDs in Windows/MacOS, where the file systems might be case-insensitive,
+     output files might be overwritten if they are only different in cases, like Abc and ABC.
 
 The definition of region is 1-based and with some custom design.