[hackers] [blind] There is no reason to add support for pipes in blind-rewrite-head || Mattias Andrée

[git]

commit bbd8ee77641288bb9051c99bc90d294ec1baa7cb
Author:     Mattias Andrée <maand...@kth.se>
AuthorDate: Sat Jun 3 17:42:59 2017 +0200
Commit:     Mattias Andrée <maand...@kth.se>
CommitDate: Sat Jun 3 17:46:20 2017 +0200

    There is no reason to add support for pipes in blind-rewrite-head
    
    Signed-off-by: Mattias Andrée <maand...@kth.se>

diff --git a/TODO b/TODO
index 1ffabe3..1d59c23 100644
--- a/TODO
+++ b/TODO
@@ -58,8 +58,6 @@ Add [-j jobs] to blind-from-video and blind-to-video.
 
 Add -f (framewise) to blind-repeat
 
-blind-rewrite-head: add support pipes
-
 Generate a header file with the appropriate values for USING_BINARY32, 
USING_BINARY64.
 long double is slightly faster than long.
 long double (xyza q) could be added as another format.
diff --git a/man/blind-rewrite-head.1 b/man/blind-rewrite-head.1
index b1e6efd..2429649 100644
--- a/man/blind-rewrite-head.1
+++ b/man/blind-rewrite-head.1
@@ -57,10 +57,22 @@ This of course means that
 cannot be used as there is not way to know
 the geometry or format of the video if it does
 not have a head.
+.SH RETIONALE
+.B blind-rewrite-head
+only support regular files because combining
+.BR blind-read-head (1),
+.BR blind-write-head (1),
+and
+.BR cat (1)
+is sufficient for doing the same operation on pipes,
+but not on regular files that are too large to store
+two copies of on disc.
 .SH SEE ALSO
 .BR blind (7),
 .BR blind-from-video (1),
-.BR blind-split (1)
+.BR blind-split (1),
+.BR blind-read-head (1),
+.BR blind-write-head (1)
 .SH AUTHORS
 Mattias Andrée
 .RI < maand...@kth.se >