Re: mhfixmsg character set conversion

[Steven Winikoff]

>How are you running strace?  

I could have sworn I included my strace command and its output in a message
to this list a couple of days ago, but I can't find any trace of that now.
I hate premature senility. :-(

Anyway, I'd done this:

   $ strace -fe execve,open,openat -f -q -s 500 mhfixmsg -decodetext 8bit \
        -decodetypes text -textcharset UTF-8 -reformat -fixcte -fixboundary \
        -noreplacetextplain -fixtype application/octet-stream -verbose \
        -file $msg

The output was as appended.  I tried this with my patched 1.7.1 mhfixmsg
and also with the new one I just built, with similar results.


>    strace -fe execve time sleep 1

This fails for me with

   strace: Can't stat 'time': No such file or directory

Hmm.  Apparently the time command isn't installed by default on Manjaro.
Well, that's fixable:

   $ pacman -S time
   $ strace -fe execve time sleep 1
   execve("/sbin/time", ["time", "sleep", "1"], 0x7ffd0e094b00 /* 104 vars */) 
= 0
   strace: Process 857617 attached
   [pid 857617] execve("/home/smw/bin/sleep", ["sleep", "1"], 0x7ffc6a17d168 /* 
104 vars */) = -1 ENOENT (No such file or directory)
   [pid 857617] execve("/local/paths/sleep", ["sleep", "1"], 0x7ffc6a17d168 /* 
104 vars */) = -1 ENOENT (No such file or directory)
   [pid 857617] execve("/usr/local/sbin/sleep", ["sleep", "1"], 0x7ffc6a17d168 
/* 104 vars */) = -1 ENOENT (No such file or directory)
   [pid 857617] execve("/sbin/sleep", ["sleep", "1"], 0x7ffc6a17d168 /* 104 
vars */) = 0
   [pid 857617] +++ exited with 0 +++
   --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=857617, 
si_uid=1000, si_status=0, si_utime=0, si_stime=0} ---
   0.00user 0.00system 0:01.00elapsed 0%CPU (0avgtext+0avgdata 1952maxresident)k
   0inputs+0outputs (0major+84minor)pagefaults 0swaps
   +++ exited with 0 +++

Manjaro has an interesting layout for binaries:

   $ ls -ld /sbin /bin /usr/bin
   lrwxrwxrwx 1 root root      7 Dec 18 10:21 /bin -> usr/bin
   lrwxrwxrwx 1 root root      7 Dec 18 10:21 /sbin -> usr/bin
   drwxr-xr-x 6 root root 184320 Feb 12 08:26 /usr/bin

...which explains why the time command was found in /sbin in the strace
output.

     - Steven


8<-----------------------------   cut here   ---------------------------->8
execve("/local/paths/mhfixmsg", ["mhfixmsg", "-decodetext", "8bit", 
"-decodetypes", "text", "-textcharset", "UTF-8", "-reformat", "-fixcte", 
"-fixboundary", "-noreplacetextplain", "-fixtype", "application/octet-stream", 
"-verbose", "-file", "-", "-outfile", "decoded"], 0x7fff62f6f088 /* 104 vars 
*/) = 0
openat(AT_FDCWD, "/etc/ld.so.cache", O_RDONLY|O_CLOEXEC) = 3
openat(AT_FDCWD, "/usr/lib/libncursesw.so.6", O_RDONLY|O_CLOEXEC) = 3
openat(AT_FDCWD, "/usr/lib/libc.so.6", O_RDONLY|O_CLOEXEC) = 3
openat(AT_FDCWD, "/home/smw/.mh_profile", O_RDONLY) = 3
openat(AT_FDCWD, "/home/smw/Mail/context", O_RDONLY) = 3
openat(AT_FDCWD, "/usr/lib/locale/locale-archive", O_RDONLY|O_CLOEXEC) = 3
openat(AT_FDCWD, "/home/smw/Mail/mhn.defaults", O_RDONLY) = 3
openat(AT_FDCWD, "/tmp/nmh_testing/decoded", O_WRONLY|O_CREAT|O_TRUNC, 0666) = 3
openat(AT_FDCWD, "/home/smw/Mail/mhfixmsgsLWrjg", O_RDWR|O_CREAT|O_EXCL, 0600) 
= 4
openat(AT_FDCWD, "/home/smw/Mail/mhfixmsgsLWrjg", O_RDONLY) = 4
openat(AT_FDCWD, "/home/smw/Mail/mhfixmsgsLWrjg", O_RDONLY) = 5
openat(AT_FDCWD, "/home/smw/Mail/mhfixmsgsLWrjg", O_RDONLY) = 4
openat(AT_FDCWD, "/home/smw/Mail/mhfixmsg1wr43U", O_RDWR|O_CREAT|O_EXCL, 0600) 
= 5
openat(AT_FDCWD, "/home/smw/Mail/mhfixmsgkbIBCl", O_RDWR|O_CREAT|O_EXCL, 0600) 
= 6
openat(AT_FDCWD, "/home/smw/Mail/mhfixmsgkbIBCl", O_RDWR|O_CREAT|O_TRUNC, 0666) 
= 6
openat(AT_FDCWD, "/home/smw/Mail/mhfixmsgsLWrjg", O_RDONLY) = 7
openat(AT_FDCWD, "/home/smw/Mail/mhfixmsgkbIBCl", O_RDONLY) = 5
mhfixmsg: /home/smw/Mail/mhfixmsgsLWrjg part 2, decode text/plain; 
charset=iso-8859-1
openat(AT_FDCWD, "/home/smw/Mail/mhfixmsgaIkkkF", O_RDWR|O_CREAT|O_EXCL, 0600) 
= 5
openat(AT_FDCWD, "/home/smw/Mail/mhfixmsgnhCjdt", O_RDWR|O_CREAT|O_EXCL, 0600) 
= 6
openat(AT_FDCWD, "/home/smw/Mail/mhfixmsgnhCjdt", O_RDWR|O_CREAT|O_TRUNC, 0666) 
= 6
openat(AT_FDCWD, "/home/smw/Mail/mhfixmsgsLWrjg", O_RDONLY) = 7
openat(AT_FDCWD, "/home/smw/Mail/mhfixmsgnhCjdt", O_RDONLY) = 5
mhfixmsg: /home/smw/Mail/mhfixmsgsLWrjg part 1, decode text/html; 
charset=iso-8859-1
openat(AT_FDCWD, "/usr/lib/gconv/gconv-modules.cache", O_RDONLY) = -1 ENOENT 
(No such file or directory)
openat(AT_FDCWD, "/usr/lib/gconv/gconv-modules", O_RDONLY|O_CLOEXEC) = 5
openat(AT_FDCWD, "/usr/lib/gconv/ISO8859-1.so", O_RDONLY|O_CLOEXEC) = 5
openat(AT_FDCWD, "/home/smw/Mail/mhfixmsguEmroo", O_RDWR|O_CREAT|O_EXCL, 0600) 
= 5
openat(AT_FDCWD, "/home/smw/Mail/mhfixmsgkbIBCl", O_RDONLY) = 6
mhfixmsg: /home/smw/Mail/mhfixmsgsLWrjg part 2, convert UTF-8 to UTF-8
openat(AT_FDCWD, "/home/smw/Mail/mhfixmsguEmroo", O_RDONLY) = 5
openat(AT_FDCWD, "/home/smw/Mail/mhfixmsgnhCjdt", O_RDONLY) = 5
+++ exited with 0 +++
8<-----------------------------   cut here   ---------------------------->8
-- 
___________________________________________________________________________
Steven Winikoff      | "When things are not as they appear to be,
Montreal, QC, Canada |  it's because they're actually simpler
smw@smwonline.ca     |  than you think them to be."
http://smwonline.ca  |     - Robert Rankin, in The Hollow
                     |       Chocolate Bunnies of the Apocalypse