Error in parsing *.xrl

[vkatsuba]

Describe the bug
Currently formatter works not good with *.xrl files and provide crash.

To Reproduce

• Create *.xrl:

%%====================================================================
%% Definitions
%%====================================================================
Definitions.

String = '([^']*?)'

%%====================================================================
%% Rules
%%====================================================================
Rules.

%% =============================================================================
%% Erlang Code
%% =============================================================================
Erlang code.

strip_value(Value) ->
    io:format("~p", [Value]).

• Run rebar3_format:

$ rebar3 format
===> Error parsing files: {modified_ast,"src/some.xrl",
                                     "src/some.xrl"}
Stack: [{rebar3_ast_formatter,format,3,
                              [{file,"/some/_build/default/plugins/rebar3_format/src/rebar3_ast_formatter.erl"},
                               {line,40}]},
        {rebar3_format_prv,'-format_files/2-fun-0-',2,
                           [{file,"/some/_build/default/plugins/rebar3_format/src/rebar3_format_prv.erl"},
                            {line,125}]},
        {lists,'-filter/2-lc$^0/1-0-',2,[{file,"lists.erl"},{line,1290}]},
        {rebar3_format_prv,format_files,2,
                           [{file,"/some/_build/default/plugins/rebar3_format/src/rebar3_format_prv.erl"},
                            {line,123}]},
        {rebar3_format_prv,do,1,
                           [{file,"/some/_build/default/plugins/rebar3_format/src/rebar3_format_prv.erl"},
                            {line,43}]},
        {rebar_core,do,2,
                    [{file,"/home/runner/work/rebar3/rebar3/src/rebar_core.erl"},
                     {line,155}]},
        {rebar3,run_aux,2,
                [{file,"/home/runner/work/rebar3/rebar3/src/rebar3.erl"},
                 {line,182}]},
        {rebar3,main,1,
                [{file,"/home/runner/work/rebar3/rebar3/src/rebar3.erl"},
                 {line,66}]}]
=ERROR REPORT==== 21-Nov-2021::13:08:17.860648 ===
    modified_ast: src/mql_scanner.xrl
    removed: [{error,no}]
    added: [{tree,no,
                  {attr,no,[],none},
                  "* * 6 : unterminated atom starting with '\\n\\n%%============' * *"}]
===> Unknown Formatting Error: {modified_ast,"src/some.xrl",
                              "src/some.xrl"}

• Output of file:

%%====================================================================
%% Definitions
%%====================================================================
Definitions.

** 6: unterminated atom starting with '\n\n%%============' **

Expected behavior
The rebar3_format do parse *.xrl files as well.

[vkatsuba]

Hm.. looks like this is not implemented. See: #246.

[elbrujohalcon]

Exactly. I'll close this as a duplicate of #246.