tmux.conf: detect running as tmate and disable non-supported features #152
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tmux versions >=2.3 support the -q option for source-file to suppress errors for nonexistent files. Even Debian/oldoldstable has tmux v2.3-4, so this works nice everwhere, *except* for when invoking tmate, which is a fork based on an old version of tmux, which then complains about: | /etc/tmux.conf:75: usage: source-file path | /etc/tmux.conf:36: usage: source-file path Try to detect tmate from within the environment, and then enable the configuration only when *not* running from within tmate. This commit relies on @mika's commit grml/grml-etc-core@71101e0 (the commit message was shamelessly copied, thx!), but two things changed: * Use "! (env | grep -q TMUX=/tmp/tmate)" instead of "env | grep -q TMUX=/tmp/tmate && false" which always results in false: $ true && false; echo $? 1 * Double escape the semicolon (;) (i.e. \\;). Because if bind-key is set up to call multiple commands, each command needs to be separated with \;. (Each command is terminated by a newline or a semicolon. Commands separated by semicolons together form a ‘command sequence’). And if bind-key is called within if-shell \; needs to be escaped one more time. (No escaping would have been needed when using braces ({}), but tmate does not seem to support braces.) See: COMMAND PARSING AND EXECUTION + PARSING SYNTAX in man page tmux(1). Replaces the PR: grml#151
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tmux versions >=2.3 support the -q option for source-file to suppress errors for nonexistent files. Even Debian/oldoldstable has tmux v2.3-4, so this works nice everwhere, except for when invoking tmate, which is a fork based on an old version of tmux, which then complains about:
| /etc/tmux.conf:75: usage: source-file path
| /etc/tmux.conf:36: usage: source-file path
Try to detect tmate from within the environment, and then enable the configuration only when not running from within tmate.
This commit relies on @mika's commit 71101e0 (the commit message was shamelessly copied, thx!), but two things changed:
Use
! (env | grep -q TMUX=/tmp/tmate)instead ofenv | grep -q TMUX=/tmp/tmate && falsewhich always results in false:$ true && false; echo $?
1
Double escape the semicolon (;) (i.e. \;).
Because if bind-key is set up to call multiple commands, each command needs to be separated with ;. (Each command is terminated by a newline or a semicolon. Commands separated by semicolons together form a ‘command sequence’). And if bind-key is called within if-shell ; needs to be escaped one more time. (No escaping would have been needed when using braces ({}), but tmate does not seem to support braces.)
See: COMMAND PARSING AND EXECUTION + PARSING SYNTAX in man page tmux(1).
Replaces the PR: #151