Andreas Rammhold aed847f9eb Ensure we aren't selecting negative directories ... When the list of directories is empty trying to navigate in the directory list did previously lead to a crash. With this change we instead return early before trying to change the directory. Example backtrace: > panic: runtime error: index out of range [-1] > > goroutine 1 [running]: > git.sr.ht/~sircmpwn/aerc/widgets.(*DirectoryList).NextPrev(0xc000160680, 0xffffffffffffffff) > source/aerc/widgets/dirlist.go:285 +0xd4 > git.sr.ht/~sircmpwn/aerc/commands/account.NextPrevFolder.Execute(0xc000191040, 0xc00025c210, 0x1, 0x1, 0x0, 0xc00016f420) > source/aerc/commands/account/next-folder.go:44 +0xe0 > git.sr.ht/~sircmpwn/aerc/commands.(*Commands).ExecuteCommand(0xc0000101a8, 0xc000191040, 0xc00025c210, 0x1, 0x1, 0xc000020070, 0xb46d01) > source/aerc/commands/commands.go:66 +0xa7 > main.execCommand(0xc000191040, 0xc0001ca190, 0xc00025c210, 0x1, 0x1, 0xc00025c210, 0xc0003fb080) > source/aerc/aerc.go:60 +0xc7 > main.main.func3(0xc00025c210, 0x1, 0x1, 0x1, 0x1) > source/aerc/aerc.go:162 +0x57 > git.sr.ht/~sircmpwn/aerc/widgets.(*Aerc).BeginExCommand.func1(0xc000201db0, 0xb) > source/aerc/widgets/aerc.go:382 +0x83 > git.sr.ht/~sircmpwn/aerc/widgets.(*ExLine).Event(0xc0003be100, 0xb475a0, 0xc00023cba0, 0xc00023cba0) > source/aerc/widgets/exline.go:79 +0x131 > git.sr.ht/~sircmpwn/aerc/widgets.(*Aerc).Event(0xc000191040, 0xb475a0, 0xc00023cba0, 0x99ee01) > source/aerc/widgets/aerc.go:202 +0x4c1 > git.sr.ht/~sircmpwn/aerc/widgets.(*Aerc).simulate(0xc000191040, 0xc000036f00, 0xd, 0x10) > source/aerc/widgets/aerc.go:195 +0x8d > git.sr.ht/~sircmpwn/aerc/widgets.(*Aerc).Event(0xc000191040, 0xb475a0, 0xc00023c9c0, 0x9c5a60) > source/aerc/widgets/aerc.go:218 +0x3e8 > git.sr.ht/~sircmpwn/aerc/lib/ui.(*UI).Tick(0xc0001ca190, 0xa99d00) > source/aerc/lib/ui/ui.go:92 +0x190 > main.main() > source/aerc/aerc.go:192 +0x5f2		2020-02-07 10:40:37 -05:00
..
account-wizard.go	Add UI options to save/pipe messages with unsupported mimetypes	2019-11-17 13:19:13 -05:00
account.go	dirlist: adapt to dynamic UIconfig	2020-01-28 10:36:01 -05:00
aerc.go	create OriginalMail struct	2020-01-09 14:31:19 -05:00
common.go	widgets: add msgInfoFromUids helper	2019-12-21 09:27:47 -05:00
compose.go	Correct spelling	2020-01-16 07:21:01 +01:00
dirlist.go	Ensure we aren't selecting negative directories	2020-02-07 10:40:37 -05:00
exline.go	Show textinput completions in popovers	2019-12-21 09:23:21 -05:00
headerlayout.go	msgviewer: Add Labels as a virtual header	2019-12-27 10:20:30 -07:00
msglist.go	config: Strongly type context type	2020-01-24 12:25:59 -05:00
msgviewer.go	Contextual UI Configuration	2020-01-24 10:50:21 -05:00
providesmessage.go	add ProvidesMessages interface	2019-12-21 09:27:47 -05:00
selecter.go	Add UI options to save/pipe messages with unsupported mimetypes	2019-11-17 13:19:13 -05:00
spinner.go	Add modify-labels command	2019-09-12 16:17:24 -04:00
status.go	Show currently pressed keys in statusline	2019-07-17 17:12:52 -04:00
tabhost.go	Add UI options to save/pipe messages with unsupported mimetypes	2019-11-17 13:19:13 -05:00
terminal.go	Switch back to upstream pty library	2020-01-16 13:45:27 -05:00