Less contains a hack to force files of size 0 to become non-seekable in order
to workaround a linux kernel bug.
When the file becomes non-seekable any further reads from the file are
appended rather than overwriting the original contents of the file.
diff --git ch.c ch.c
index 1a679767a42..d7c0aa34e90 100644
--- ch.c
+++ ch.c
@@ -643,19 +643,6 @@ ch_flush(void)
ch_block = 0; /* ch_fpos / LBUFSIZE; */
ch_offset = 0; /* ch_fpos % LBUFSIZE; */
-#if 1
- /*
- * This is a kludge to workaround a Linux kernel bug: files in
- * /proc have a size of 0 according to fstat() but have readable
- * data. They are sometimes, but not always, seekable.
- * Force them to be non-seekable here.
- */
- if (ch_fsize == 0) {
- ch_fsize = -1;
- ch_flags &= ~CH_CANSEEK;
- }
-#endif
-
if (lseek(ch_file, (off_t)0, SEEK_SET) == (off_t)-1) {
/*
* Warning only; even if the seek fails for some reason
