How to backtrack after jamba lambda expression with uncrustify formatter?

Question

I use atom with atom-beautify and uncrustify to format my java files. I want the indentation of the lambda expression to only be indented one level after the open brace, () -> { . I tried indent_continue property, but it goes crazy when I set it to zero. (using 4 spaces for indentation)

when indent_continue = 0 , this happens:

 public class Test { public static void runTest(Runnable code) { code.run(); } public static void main(String[] args) { runTest(() -> { System.out.println("hello"); // <-- look at this line }); // <-- this one too } } 

when indent_continue = 4 , these are double indents:

 public class Test { public static void runTest(Runnable code) { code.run(); } public static void main(String[] args) { runTest(() -> { System.out.println("hello"); // <-- look at this line }); // <-- this one too } } 

Desired Result:

 public class Test { public static void runTest(Runnable code) { code.run(); } public static void main(String[] args) { runTest(() -> { System.out.println("hello"); // <-- look at this line }); // <-- this one too } } 

Current uncrustify.cfg

 # -------------------------------------------------------------------------------------------------# # Boilerplate: https://github.com/bengardner/uncrustify/blob/master/etc/defaults.cfg # # -------------------------------------------------------------------------------------------------# ## General ## ------------------------------------------------------------------------------------------------- # The type of line endings newlines = lf # auto/lf/crlf/cr # - 80 limit is completely deprecated # - 100 is the new soft limit # - 120 is hard limit code_width = 120 # empty_lines_max = nl_max - 1 nl_max = 4 ## UNICODE ## ------------------------------------------------------------------------------------------------- ## Ideally ASCII, UTF-8 otherwise # If the file contains bytes with values between 128 and 255, but is not UTF-8, then output as UTF-8 utf8_byte = false # Force the output encoding to UTF-8 utf8_force = true ## Tabs ## ------------------------------------------------------------------------------------------------- ## Always use 4 spaces input_tab_size = 4 output_tab_size = 4 indent_with_tabs = 0 # Comments that are not a brace level are indented with tabs on a tabstop. # Requires indent_with_tabs = 2. If false, will use spaces. indent_cmt_with_tabs = false # Whether to use tabs for aligning align_with_tabs = false # Whether to keep non-indenting tabs align_keep_tabs = false # Whether to bump out to the next tab when aligning align_on_tabstop = false ## Indenting ## ------------------------------------------------------------------------------------------------- # The number of columns to indent per level. # Usually 2, 3, 4, or 8. indent_columns = 4 # The continuation indent. If non-zero, this overrides the indent of '(' and '=' continuation indents. # For FreeBSD, this is set to 4. Negative value is absolute and not increased for each ( level indent_continue = 0 ## Spacing ## ------------------------------------------------------------------------------------------------- # Whether to balance spaces inside nested parens sp_balance_nested_parens = false ## Parentheses ## ------------------------------------------------------------------------------------------------- # Controls the indent of a close paren after a newline. # 0: Indent to body level # 1: Align under the open paren # 2: Indent to the brace level indent_paren_close = 2 ## Preprocessor ## ------------------------------------------------------------------------------------------------- # Control indent of preprocessors inside #if blocks at brace level 0 pp_indent = remove # ignore/add/remove/force # indent by 1 space pp_space = add pp_space_count = 1 # indent pp at code level pp_indent_at_level = true pp_define_at_level = true # Control whether to indent the code between #if, #else and #endif when not at file-level pp_if_indent_code = false # # Align macro functions and variables together # align_pp_define_together = false # The minimum space between label and value of a preprocessor define align_pp_define_gap = 0 # The span for aligning on '#define' bodies (0=don't align) align_pp_define_span = 2 # Add or remove space around preprocessor '##' concatenation operator. Default=Add sp_pp_concat = add # ignore/add/remove/force # Add or remove space after preprocessor '#' stringify operator. Also affects the '#@' charizing operator. sp_pp_stringify = ignore # ignore/add/remove/force # Add or remove space before preprocessor '#' stringify operator as in '#define x(y) L#y'. #sp_before_pp_stringify = ignore # ignore/add/remove/force # Template # -------------------------------------------------------------------------------------------------- # Add or remove space in 'template <' vs 'template<'. # If set to ignore, sp_before_angle is used. sp_template_angle = add # ignore/add/remove/force # Add or remove space before '<>' sp_before_angle = remove # ignore/add/remove/force # Add or remove space inside '<' and '>' sp_inside_angle = remove # ignore/add/remove/force # Add or remove space after '<>' sp_after_angle = add # ignore/add/remove/force # Add or remove space between '<>' and '(' as found in 'new List<byte>();' sp_angle_paren = remove # ignore/add/remove/force # Add or remove space between '<>' and a word as in 'List<byte> m;' sp_angle_word = add # ignore/add/remove/force # Add or remove space between '>' and '>' in '>>' (template stuff C++/C# only). Default=Add sp_angle_shift = add # ignore/add/remove/force indent_align_string = false # Whether braces are indented to the body level indent_braces = false # Disabled indenting function braces if indent_braces is true indent_braces_no_func = false # Disabled indenting class braces if indent_braces is true indent_braces_no_class = false # Disabled indenting struct braces if indent_braces is true indent_braces_no_struct = false # Indent based on the size of the brace parent, ie 'if' => 3 spaces, 'for' => 4 spaces, etc. indent_brace_parent = false indent_namespace = false indent_extern = false indent_class = true indent_class_colon = false indent_else_if = false indent_var_def_cont = true indent_func_call_param = false indent_func_def_param = false indent_func_proto_param = false indent_func_class_param = false indent_func_ctor_var_param = false indent_func_param_double = true indent_template_param = false indent_relative_single_line_comments = false indent_col1_comment = true indent_access_spec_body = false indent_paren_nl = false indent_comma_paren = false indent_bool_paren = false indent_first_bool_expr = false indent_square_nl = false indent_preserve_sql = false indent_align_assign = true align_number_left = true align_func_params = true align_same_func_call_params = false align_var_def_colon = false align_var_def_attribute = true align_var_def_inline = true align_right_cmt_mix = false align_on_operator = false align_mix_var_proto = false align_single_line_func = false align_single_line_brace = false align_nl_cont = false align_left_shift = true align_oc_decl_colon = false nl_collapse_empty_body = true nl_assign_leave_one_liners = true nl_class_leave_one_liners = true nl_enum_leave_one_liners = true nl_getset_leave_one_liners = true nl_func_leave_one_liners = true nl_if_leave_one_liners = true nl_multi_line_cond = true nl_multi_line_define = true nl_before_case = false nl_after_case = false nl_after_return = true nl_after_semicolon = true nl_after_brace_open = false nl_after_brace_open_cmt = false nl_after_vbrace_open = false nl_after_vbrace_open_empty = false nl_after_brace_close = false nl_after_vbrace_close = false nl_define_macro = false nl_squeeze_ifdef = false nl_ds_struct_enum_cmt = false nl_ds_struct_enum_close_brace = false nl_create_if_one_liner = false nl_create_for_one_liner = false nl_create_while_one_liner = false ls_for_split_full = true ls_func_split_full = false nl_after_multiline_comment = true eat_blanks_after_open_brace = true eat_blanks_before_close_brace = true mod_full_brace_if_chain = true mod_pawn_semicolon = false mod_full_paren_if_bool = false mod_remove_extra_semicolon = false mod_sort_import = false mod_sort_using = false mod_sort_include = false mod_move_case_break = false mod_remove_empty_return = true cmt_indent_multi = true cmt_c_group = false cmt_c_nl_start = false cmt_c_nl_end = false cmt_cpp_group = false cmt_cpp_nl_start = false cmt_cpp_nl_end = false cmt_cpp_to_c = false cmt_star_cont = true cmt_multi_check_last = true cmt_insert_before_preproc = false indent_sing_line_comments = 0 indent_switch_case = 4 indent_case_shift = 0 align_var_def_star_style = 0 align_var_def_amp_style = 1 align_assign_span = 1 align_assign_thresh = 8 align_enum_equ_span = 3 align_var_struct_span = 3 align_var_struct_gap = 1 align_struct_init_span = 2 align_right_cmt_span = 2 align_right_cmt_gap = 1 align_right_cmt_at_col = 2 nl_end_of_file_min = 1 nl_func_var_def_blk = 1 nl_after_func_body = 2 nl_after_func_body_one_liner = 2 nl_before_block_comment = 2 nl_after_struct = 1 mod_full_brace_nl = 1 mod_add_long_function_closebrace_comment = 32 mod_add_long_ifdef_endif_comment = 10 mod_add_long_ifdef_else_comment = 10 sp_arith = ignore sp_assign = force sp_assign_default = add sp_enum_assign = force sp_bool = force sp_compare = force sp_before_ptr_star = remove sp_before_unnamed_ptr_star = add sp_between_ptr_star = remove sp_after_ptr_star = add sp_after_ptr_star_func = force sp_before_ptr_star_func = force sp_after_type = force sp_before_sparen = force sp_inside_sparen = remove sp_after_sparen = add sp_sparen_brace = add sp_special_semi = remove sp_before_semi = remove sp_before_semi_for_empty = remove sp_after_semi = add sp_after_semi_for_empty = remove sp_after_comma = force sp_before_comma = remove sp_before_case_colon = remove sp_after_operator = add sp_after_operator_sym = add sp_after_cast = add sp_inside_paren_cast = remove sp_sizeof_paren = remove sp_inside_braces_enum = add sp_inside_braces_struct = add sp_inside_braces = add sp_inside_braces_empty = remove sp_func_proto_paren = remove sp_func_def_paren = remove sp_inside_fparens = remove sp_inside_fparen = remove sp_fparen_brace = add sp_func_call_paren = remove sp_func_call_paren_empty = remove sp_func_call_user_paren = remove sp_return_paren = add sp_attribute_paren = remove sp_defined_paren = remove sp_macro = add sp_macro_func = add sp_else_brace = add sp_brace_else = add sp_brace_typedef = add sp_not = remove sp_inv = remove sp_addr = remove sp_member = remove sp_deref = remove sp_sign = remove sp_incdec = remove sp_before_nl_cont = add sp_cond_colon = force sp_cond_question = force sp_cmt_cpp_start = add nl_start_of_file = remove nl_end_of_file = force nl_assign_brace = remove nl_assign_square = remove nl_enum_brace = remove nl_struct_brace = remove nl_union_brace = remove nl_if_brace = remove nl_brace_else = remove nl_elseif_brace = remove nl_else_brace = remove nl_else_if = remove nl_for_brace = remove nl_while_brace = remove nl_do_brace = remove nl_brace_while = remove nl_switch_brace = remove nl_case_colon_brace = remove nl_func_type_name = remove nl_func_proto_type_name = remove nl_func_paren = remove nl_func_def_paren = remove nl_func_decl_empty = remove nl_func_def_empty = remove nl_fdef_brace = remove nl_return_expr = remove pos_arith = lead pos_assign = trail pos_bool = trail pos_conditional = trail pos_comma = trail pos_class_comma = lead pos_class_colon = lead mod_full_brace_do = remove mod_full_brace_for = remove mod_full_brace_function = force mod_full_brace_while = remove mod_paren_on_return = ignore # Misc # -------------------------------------------------------------------------------------------------- # Allow interpreting '>=' and '>>=' as part of a template in 'void f(list<list<B>>=val);'. # If true (default), 'assert(x<0 && y>=3)' will be broken. # Improvements to template detection may make this option obsolete. tok_split_gte = false 

Version Information:

 Ubuntu 16.04.1 LTS Atom : 1.13.0 Electron: 1.3.13 Chrome : 52.0.2743.82 Node : 6.5.0 uncrustify: 0.59 atom-beautify: 0.29.17 

Answer 1

On my Ubuntu 16.10 and Atom 1.14.1 systems (other versions were the same), I solved this by updating the latest uncrustify version 0.64.

Since I did not try to recreate uncrustify from the source code, I pulled out the ubuntu docker image: 04.17, set it untwisted, and copied the compiled and ready-to-use binary from /usr/bin/uncrustify in the docker container instead of my main machine /usr/bin/uncrustify .
This works fine for me, and indentation is now as expected.