-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 (Please Cc me in replies, as I am not subscribed here.)
A user reported some annoying/puzzling behavior when running GNU Screen under bash under eterm: Every prompt would be preceded by the current working directory path, preceded by an extra slash. For example, instead of the usual: prompt$ echo Hello Hello prompt$ The user would get: //home/user prompt$ echo Hello Hello //home/user prompt$ After some investigation, I found that bash tries to detect when it's running under an Emacs terminal (looks for the string "term" within the env var EMACS, within main), and when that's the case, will issue the SUB control, followed by a slash and then the CWD (and a final newline). Screen doesn't know what to do with the SUB (0x1A) character. If it passed it straight through and then interpreted following characters as usual, it's understanding of what should be placed in the image buffer and where the cursor's current position is, would be mistaken. OTOH, if it interpreted SUB the way eterm does, it would fail to be portable to other terminals. So I believe screen's current behavior (ignoring SUB) to be correct. Still, it's not fun for users to see bash's underwear hanging out like that. An easy workaround is to unset EMACS (or at least reset it so it doesn't contain the word "term"); but I wonder whether the check could be made a little more robust: perhaps if, in addition to checking the value of EMACS (which screen won't know to change), it also verifies that TERM=eterm (which screen would normally change to "screen" or somesuch)? (This issue affects the latest available Bash release, version 3.2.) - -- Thanks, Micah J. Cowan Programmer, musician, typesetting enthusiast, gamer, and GNU Wget Project Maintainer. http://micah.cowan.name/ -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.7 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFIc/YJ7M8hyUobTrERAponAJ0SQ0QVpSymACSHlU0WC/RsLp1o4gCgkqkr c0hNcI2aaEUZgVPuusby27Q= =i2n6 -----END PGP SIGNATURE-----
