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From a report received (email@example.com):
The following command is designed to pipe through a remote command back to the local host and demonstrates an issue found while using mercurial. I have looked through your existing bug list but failed to spot anything similar. dir | PLINK.EXE -v -ssh -l duncan -i "C:\Program Files\PuTTY\hugo.ppk" remote_host cat > tmp fails on 0.59 and 2007-03-21:r7403. works on 0.58. localhost : Win XP home edition SP2 all updates applied remote: suse linux 10.2 : SSH-2.0-OpenSSH_4.4 dir | "c:\Program Files\Putty\PLINK.EXE" -v -ssh -l duncan -i "C:\Program Files\PuTTY\hugo.ppk" cyclops cat > tmp Looking up host "cyclops" Connecting to 192.168.0.101 port 22 Server version: SSH-2.0-OpenSSH_4.4 We claim version: SSH-2.0-PuTTY_Snapshot_2007_03_21:r7403 Using SSH protocol version 2 Doing Diffie-Hellman group exchange Doing Diffie-Hellman key exchange with hash SHA-256 Host key fingerprint is: ssh-rsa 1024 18:d1:50:e9:e4:79:83:f5:42:6a:eb:52:5e:9b:06:dc Initialised AES-256 SDCTR client->server encryption Initialised HMAC-SHA1 client->server MAC algorithm Initialised AES-256 SDCTR server->client encryption Initialised HMAC-SHA1 server->client MAC algorithm Reading private key file "C:\Program Files\PuTTY\hugo.ppk" Using username "duncan". Offered public key Offer of public key accepted Authenticating with public key "imported-openssh-key" Access granted Opened channel for session Started a shell/command Unable to read from standard inputThis particular instance of "Unable to read from standard input" should be fixed now:
> Does that fix the "Unable to read from standard input" bug? The answer, currently, is `I don't know'. It certainly fixes _a_ bug which gives rise to that error message: if you do something along the lines of echo -e 'wibble\nscrark' | plink foovax sort then you should now no longer get that error. However, I can't be sure that the same error when doing complicated things launched from a service is due to the same Windows error, so it might not fix all instances of the problem. This is why I also added more detailed error reporting to that error message, so that if any instances of the problem remain we'll have more information with which to investigate them.
It turns out there are more instances of this; see win-plink-stdin-handle-invalid.
Audit trail for this bug.