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An empty argument and all subsequent arguments are dropped #2234
Description
My urfave/cli version is
v3.6.0
Checklist
- Are you running the latest v3 release? ish. Issue still exists in v3.6.1
- Did you check the manual for your release?
- Did you perform a search about this problem?
Describe the bug
An empty arg and all subsequent arguments get dropped.
i.e. if I have a command line like the following, "" and everything following are dropped
$ command subcommand -f=something "" arg2 arg3
gets treated as
$ command subcommand -f=something
To reproduce
Any c.Run(ctx, []string{"command", "", "arg2"}) or similar will reproduce.
Observed behavior
commands with an empty argument misbehave or fail entirely.
Expected behavior
I would expect the arguments to include the empty argument and all following arguments.
Want to fix this yourself?
sure
Run go version and paste its output here
$ go version
go version go1.24.8 linux/amd64
Run go env and paste its output here
$ go env
AR='ar'
CC='x86_64-linux-gnu-gcc'
CGO_CFLAGS='-O2 -g'
CGO_CPPFLAGS=''
CGO_CXXFLAGS='-O2 -g'
CGO_ENABLED='1'
CGO_FFLAGS='-O2 -g'
CGO_LDFLAGS='-O2 -g'
CXX='x86_64-linux-gnu-g++'
GCCGO='gccgo'
GO111MODULE=''
GOAMD64='v1'
GOARCH='amd64'
GOAUTH='netrc'
GOBIN=''
GOCACHE=<redacted>
GOCACHEPROG=''
GODEBUG=''
GOENV=<redacted>
GOEXE=''
GOEXPERIMENT=''
GOFIPS140='off'
GOFLAGS=''
GOGCCFLAGS='-fPIC -m64 -pthread -Wl,--no-gc-sections -fmessage-length=0 -ffile-prefix-map=<redacted>/tmp/go-build569096055=/tmp/go-build -gno-record-gcc-switches'
GOHOSTARCH='amd64'
GOHOSTOS='linux'
GOINSECURE=''
GOMOD='/dev/null'
GOMODCACHE=<redacted>
GONOPROXY=''
GONOSUMDB=''
GOOS='linux'
GOPATH=<redacted>
GOPRIVATE=''
GOPROXY='https://proxy.golang.org,direct'
GOROOT='/usr/lib/go-1.24'
GOSUMDB='sum.golang.org'
GOTELEMETRY='local'
GOTELEMETRYDIR=<redacted>
GOTMPDIR=''
GOTOOLCHAIN='auto'
GOTOOLDIR='/usr/lib/go-1.24/pkg/tool/linux_amd64'
GOVCS=''
GOVERSION='go1.24.8'
GOWORK=''
PKG_CONFIG='pkg-config'
Activity
test: regression for #2234 empty positional arg after a flag
Merge pull request #2328 from c-tonneslan/empty-arg-with-flag-regression
thaJeztah commentedon Jun 11, 2026
Interesting the commit is in 30e57ad but the pull request (linked from the release notes) produces a 404? #2328 /
#2328
bbadour commentedon Jun 11, 2026
I suspect that is because it references a pull request on a different instance or branch or something: c-tonneslan
thaJeztah commentedon Jun 11, 2026
Yeah, I wonder if the account that opened the PR was banned; in that case I've seen GitHub also deleting pull requests (or make them invisible); look like the
@c-tonneslanproduces a 404; https://github.com/c-tonneslan