--reflow_property_chains does not work

[baryluk]

user@debian:~$ DC=ldmd2 dub run dfmt -- --reflow_property_chains=conditional_newline /dev/null #
Building package dfmt in /home/user/.dub/packages/dfmt-0.15.1/dfmt/
Performing "debug" build using /usr/bin/ldmd2 for x86_64.
libdparse 0.23.2: target for configuration "library" is up to date.
dfmt 0.15.1: target for configuration "application" is up to date.
To force a rebuild of up-to-date targets, run again with --force.
Running .dub/packages/dfmt-0.15.1/dfmt/bin/dfmt --reflow_property_chains=conditional_newline /dev/null
Invalid argument
Program exited with code 1

but it should according to --help

user@debian:~$ dub run --vquiet dfmt -- -h
dfmt v0.15.1-debug
https://github.com/dlang-community/dfmt

Options:
    --help, -h          Print this help message
    --inplace, -i       Edit files in place
    --config, -c    Path to directory to load .editorconfig file from.
    --version           Print the version number and then exit

Formatting Options:
    --align_switch_statements
    --brace_style               (allman|otbs|stroustrup|knr)
    --end_of_line               (lf|cr|crlf)
    --indent_size
    --indent_style, -t          (tab|space)
    --keep_line_breaks
    --soft_max_line_length
    --max_line_length
    --outdent_attributes
    --space_after_cast
    --space_before_function_parameters
    --selective_import_space
    --single_template_constraint_indent
    --split_operator_at_line_end
    --compact_labeled_statements
    --template_constraint_style
    --space_before_aa_colon
    --single_indent
    --reflow_property_chains
        (conditional_newline_indent|conditional_newline|always_newline|always_newline_indent)

[baryluk]

Actually many more are broken:

user@debian:~$ dub run --vquiet dfmt -- --brace_style=otbs --indent_size=2 --split_operator_at_line_end  example.d 
Invalid argument
user@debian:~$ dub run --vquiet dfmt -- --brace_style=otbs --indent_size=2 --single_template_constraint_indent  example.d
Invalid argument
user@debian:~$ dub run --vquiet dfmt -- --brace_style=otbs --indent_size=2 --selective_import_space  example.d 
Invalid argument
user@debian:~$ dub run --vquiet dfmt -- --brace_style=otbs --indent_size=2 --single_indent  example.d 
Invalid argument
user@debian:~$ 

Some do work (like --indent_size, --indent_size, --brace_style - I tested these, maybe some other also do work)

[belka-ew]

You have to specify values for flags, like --split_operator_at_line_end=true or --split_operator_at_line_end=false.

[baryluk]

@belka-ew Ok. I do like explicit (i.e. my custom D flag parser, also requires explicit =true, =false for boolean flags by default), but --help output should reflect this better.