All mails with «Content-Type: text/plain; charset=UTF-8; format=flowed» are displayed with character encoding ISO-8859-1, whereas mails with «Content-Type: text/plain; charset=ISO-8859-15; format=flowed» are displayed as UTF-8. «Content-Type: text/plain; charset="iso-8859-1"» seems to be displayed correctly. In all cases, it is possible to override the initially selected encoding by choosing the correct encoding from the menu. But since even the titles in the Message list are shown in the wrong encoding, and one has to select the correct encoding from the menu for ober 80% of all mails, Thunderbird has become a very bad experience on Gentoo Linux. Reproducible: Always # locale LANG=en_US.UTF-8 LC_CTYPE="en_US.UTF-8" LC_NUMERIC="en_US.UTF-8" LC_TIME="en_US.UTF-8" LC_COLLATE="en_US.UTF-8" LC_MONETARY="en_US.UTF-8" LC_MESSAGES="en_US.UTF-8" LC_PAPER="en_US.UTF-8" LC_NAME="en_US.UTF-8" LC_ADDRESS="en_US.UTF-8" LC_TELEPHONE="en_US.UTF-8" LC_MEASUREMENT="en_US.UTF-8" LC_IDENTIFICATION="en_US.UTF-8" LC_ALL= # emerge --info Portage 2.1.6.11 (default/linux/x86/2008.0, gcc-4.1.2, glibc-2.8_p20080602-r1, 2.6.27-gentoo-r7 i686) ================================================================= System uname: Linux-2.6.27-gentoo-r7-i686-Intel-R-_Core-TM-2_Duo_CPU_T7100_@_1.80GHz-with-glibc2.0 Timestamp of tree: Wed, 06 May 2009 22:15:02 +0000 app-shells/bash: 3.2_p39 dev-java/java-config: 1.3.7-r1, 2.1.7 dev-lang/python: 2.4.4-r13, 2.5.4-r2 dev-python/pycrypto: 2.0.1-r6 dev-util/cmake: 2.4.8 sys-apps/baselayout: 1.12.11.1 sys-apps/sandbox: 1.6-r2 sys-devel/autoconf: 2.13, 2.63 sys-devel/automake: 1.5, 1.7.9-r1, 1.8.5-r3, 1.9.6-r2, 1.10.2 sys-devel/binutils: 2.18-r3 sys-devel/gcc-config: 1.4.0-r4 sys-devel/libtool: 1.5.26 virtual/os-headers: 2.6.27-r2 ACCEPT_KEYWORDS="x86" CBUILD="i686-pc-linux-gnu" CFLAGS="-O3 -march=pentium-m -pipe" CHOST="i686-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/kde/3.5/env /usr/kde/3.5/share/config /usr/kde/3.5/shutdown /usr/share/config" CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/env.d /etc/env.d/java/ /etc/fonts/fonts.conf /etc/gconf /etc/php/apache2-php5/ext-active/ /etc/php/cgi-php5/ext-active/ /etc/php/cli-php5/ext-active/ /etc/revdep-rebuild /etc/sandbox.d /etc/terminfo /etc/texmf/language.dat.d /etc/texmf/language.def.d /etc/texmf/updmap.d /etc/texmf/web2c /etc/udev/rules.d" CXXFLAGS="-O3 -march=pentium-m -pipe" DISTDIR="/usr/portage/distfiles" FEATURES="distlocks fixpackages parallel-fetch protect-owned sandbox sfperms strict unmerge-orphans userfetch" GENTOO_MIRRORS="ftp://mirror.switch.ch/mirror/gentoo/ ftp://gd.tuwien.ac.at/opsys/linux/gentoo/ " LANG="en_US.UTF-8" LDFLAGS="-Wl,-O1" MAKEOPTS="-j3" PKGDIR="/usr/portage/packages" PORTAGE_CONFIGROOT="/" PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --compress --force --whole-file --delete --stats --timeout=180 --exclude=/distfiles --exclude=/local --exclude=/packages" PORTAGE_TMPDIR="/var/tmp" PORTDIR="/usr/portage" SYNC="rsync://rsync.europe.gentoo.org/gentoo-portage" USE="X X509 accessibility acl alsa amr apache2 arts authdaemond authfile ban branding bzip2 cairo calendar cdb cdr cgi cjk cli concurrentmodphp cracklib crypt ctype cups curl curlwrappers dbus deflate dga directfb discard-path diskio dmx doc dri dvd elf emacs encode exif fam fbcon filter fimp firebird firefox fontconfig foomaticdb force-cgi-redirect fortran ftp gadu gcj gd gdbm gif gimp gpg gphoto2 gpm graphics groupwise gstreamer hal hardened hash hfs history hpn iconv idn imagemagick imap imlib inifile ipv6 ipw3945 irc isdnlog jack jadetex java jingle jpeg kde kde4 kdeprefix kdm kerberos kpathsea lame laptop latex lcms ldap ldap-sasl lm_sensors loop-aes midi mmap mmx mng mp2 mp3 mp3tunes mpeg mpeg2 mudflap mysql mysqli ncurses nls nptl nptlonly nsplugin odbc ogg openexr opengl openmp openssl opensslcrypt oss pam pcre pdf perl png posix ppds pppd pstricks python qt-static qt3 qt4 quicktime radius raw readline reflection rpm rrdcgi rrdtool samba sametime sasl sdk sdl sensord session slp smp sms snmp soap sockets softquota spf spl sqlite sse ssl ssse3 stats svg svga svgz swat sysfs sysvipc tcl tcpd tetex texteffect theora tiff tk truetype unicode usb utempter v4l vcd vhosts vorbis wavpack win32codecs wma wmf x86 xcomposite xhtml xine xinerama xml xmldoclet xmlreader xmlrpc xmlwriter xmp xorg xpm xscreensaver xsl xulrunner xv xvid xvmc yahoo yellownet zip zlib" ALSA_CARDS="ali5451 als4000 atiixp atiixp-modem bt87x ca0106 cmipci emu10k1 emu10k1x ens1370 ens1371 es1938 es1968 fm801 hda-intel intel8x0 intel8x0m maestro3 trident usb-audio via82xx via82xx-modem ymfpci" ALSA_PCM_PLUGINS="adpcm alaw asym copy dmix dshare dsnoop empty extplug file hooks iec958 ioplug ladspa lfloat linear meter mmap_emul mulaw multi null plug rate route share shm softvol" APACHE2_MODULES="actions alias auth_basic authn_alias authn_anon authn_dbm authn_default authn_file authz_dbm authz_default authz_groupfile authz_host authz_owner authz_user autoindex cache dav dav_fs dav_lock deflate dir disk_cache env expires ext_filter file_cache filter headers include info log_config logio mem_cache mime mime_magic negotiation rewrite setenvif speling status unique_id userdir usertrack vhost_alias" ELIBC="glibc" INPUT_DEVICES="evdev" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" USERLAND="GNU" VIDEO_CARDS="radeonhd vesa fbdev" Unset: CPPFLAGS, CTARGET, EMERGE_DEFAULT_OPTS, FFLAGS, INSTALL_MASK, LC_ALL, LINGUAS, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS, PORTDIR_OVERLAY
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