https://speakerdeck.com/dealforest/debugger-false-tips で紹介した Command

.gdbinit

define pv
if $argc == 0
po [[[UIApplication sharedApplication] keyWindow] recursiveDescription]
end
if $argc == 1
po [$arg0 recursiveDescription]
end
end

define st
po [NSThread callStackSymbols]
end

.lldbinit

command regex pv 's/^[[:space:]]*$/po [[[UIApplication sharedApplication] keyWindow] recursiveDescription]/' 's/^(.+)$/po [%1 recursiveDescription]/'
command regex st 's/^[[:space:]]*$/po [NSThread callStackSymbols]/'