diff --git a/rc/filetype/crystal.kak b/rc/filetype/crystal.kak
index 20ef637b..611158e8 100644
--- a/rc/filetype/crystal.kak
+++ b/rc/filetype/crystal.kak
@@ -5,205 +5,205 @@
 # ‾‾‾‾‾‾‾‾‾
 
 hook global BufCreate '.*\.cr' %{
-  set-option buffer filetype crystal
+    set-option buffer filetype crystal
 }
 
 # Initialization
 # ‾‾‾‾‾‾‾‾‾‾‾‾‾‾
 
 hook global WinSetOption filetype=crystal %{
-  require-module crystal
+    require-module crystal
 
-  add-highlighter window/crystal ref crystal
-  evaluate-commands set-option window static_words %opt{crystal_keywords} %opt{crystal_attributes} %opt{crystal_objects}
+    add-highlighter window/crystal ref crystal
+    evaluate-commands set-option window static_words %opt{crystal_keywords} %opt{crystal_attributes} %opt{crystal_objects}
 
-  hook window InsertChar '\n' -group crystal-indent crystal-new-line-inserted
+    hook window InsertChar '\n' -group crystal-indent crystal-new-line-inserted
 
-  hook -always -once window WinSetOption filetype=.* %{
-    remove-highlighter window/crystal
-    remove-hooks window crystal-.+
-  }
+    hook -always -once window WinSetOption filetype=.* %{
+        remove-highlighter window/crystal
+        remove-hooks window crystal-.+
+    }
 }
 
 provide-module crystal %§
-  declare-option -hidden str-list crystal_keywords 'abstract' 'alias' 'annotation' 'as' 'asm' 'begin' 'break' 'case' 'class' 'def' 'do' 'else' 'elsif' 'end' 'ensure' 'enum' 'extend' 'false' 'for' 'fun' 'if' 'include' 'instance_sizeof' 'is_a?' 'lib' 'macro' 'module' 'next' 'nil' 'nil?' 'of' 'offsetof' 'out' 'pointerof' 'private' 'protected' 'require' 'rescue' 'responds_to?' 'return' 'select' 'self' 'sizeof' 'struct' 'super' 'then' 'true' 'type' 'typeof' 'uninitialized' 'union' 'unless' 'until' 'verbatim' 'when' 'while' 'with' 'yield'
-  # https://crystal-lang.org/reference/syntax_and_semantics/methods_and_instance_variables.html#getters-and-setters
-  declare-option -hidden str-list crystal_attributes 'getter' 'setter' 'property'
-  declare-option -hidden str-list crystal_operators '+' '-' '*' '/' '//' '%' '|' '&' '^' '~' '**' '<<' '<' '<=' '==' '!=' '=~' '!~' '>>' '>' '>=' '<=>' '===' '[]' '[]=' '[]?' '[' '&+' '&-' '&*' '&**'
-  declare-option -hidden str-list crystal_objects 'Adler32' 'ArgumentError' 'Array' 'Atomic' 'Base64' 'Benchmark' 'BigDecimal' 'BigFloat' 'BigInt' 'BigRational' 'BitArray' 'Bool' 'Box' 'Bytes' 'Channel' 'Char' 'Class' 'Colorize' 'Comparable' 'Complex' 'Concurrent' 'ConcurrentExecutionException' 'CRC32' 'Crypto' 'Crystal' 'CSV' 'Debug' 'Deprecated' 'Deque' 'Digest' 'Dir' 'DivisionByZeroError' 'DL' 'ECR' 'Enum' 'Enumerable' 'ENV' 'Errno' 'Exception' 'Fiber' 'File' 'FileUtils' 'Flags' 'Flate' 'Float' 'Float32' 'Float64' 'GC' 'Gzip' 'Hash' 'HTML' 'HTTP' 'Indexable' 'IndexError' 'INI' 'Int' 'Int128' 'Int16' 'Int32' 'Int64' 'Int8' 'InvalidBigDecimalException' 'InvalidByteSequenceError' 'IO' 'IPSocket' 'Iterable' 'Iterator' 'JSON' 'KeyError' 'Levenshtein' 'Link' 'LLVM' 'Logger' 'Markdown' 'Math' 'MIME' 'Mutex' 'NamedTuple' 'Nil' 'NilAssertionError' 'NotImplementedError' 'Number' 'OAuth' 'OAuth2' 'Object' 'OpenSSL' 'OptionParser' 'OverflowError' 'PartialComparable' 'Path' 'Pointer' 'PrettyPrint' 'Proc' 'Process' 'Random' 'Range' 'Readline' 'Reference' 'Reflect' 'Regex' 'SemanticVersion' 'Set' 'Signal' 'Slice' 'Socket' 'Spec' 'StaticArray' 'String' 'StringPool' 'StringScanner' 'Struct' 'Symbol' 'System' 'TCPServer' 'TCPSocket' 'Termios' 'Time' 'Tuple' 'TypeCastError' 'UDPSocket' 'UInt128' 'UInt16' 'UInt32' 'UInt64' 'UInt8' 'Unicode' 'Union' 'UNIXServer' 'UNIXSocket' 'URI' 'UUID' 'VaList' 'Value' 'WeakRef' 'XML' 'YAML' 'Zip' 'Zlib'
+    declare-option -hidden str-list crystal_keywords 'abstract' 'alias' 'annotation' 'as' 'asm' 'begin' 'break' 'case' 'class' 'def' 'do' 'else' 'elsif' 'end' 'ensure' 'enum' 'extend' 'false' 'for' 'fun' 'if' 'include' 'instance_sizeof' 'is_a?' 'lib' 'macro' 'module' 'next' 'nil' 'nil?' 'of' 'offsetof' 'out' 'pointerof' 'private' 'protected' 'require' 'rescue' 'responds_to?' 'return' 'select' 'self' 'sizeof' 'struct' 'super' 'then' 'true' 'type' 'typeof' 'uninitialized' 'union' 'unless' 'until' 'verbatim' 'when' 'while' 'with' 'yield'
+    # https://crystal-lang.org/reference/syntax_and_semantics/methods_and_instance_variables.html#getters-and-setters
+    declare-option -hidden str-list crystal_attributes 'getter' 'setter' 'property'
+    declare-option -hidden str-list crystal_operators '+' '-' '*' '/' '//' '%' '|' '&' '^' '~' '**' '<<' '<' '<=' '==' '!=' '=~' '!~' '>>' '>' '>=' '<=>' '===' '[]' '[]=' '[]?' '[' '&+' '&-' '&*' '&**'
+    declare-option -hidden str-list crystal_objects 'Adler32' 'ArgumentError' 'Array' 'Atomic' 'Base64' 'Benchmark' 'BigDecimal' 'BigFloat' 'BigInt' 'BigRational' 'BitArray' 'Bool' 'Box' 'Bytes' 'Channel' 'Char' 'Class' 'Colorize' 'Comparable' 'Complex' 'Concurrent' 'ConcurrentExecutionException' 'CRC32' 'Crypto' 'Crystal' 'CSV' 'Debug' 'Deprecated' 'Deque' 'Digest' 'Dir' 'DivisionByZeroError' 'DL' 'ECR' 'Enum' 'Enumerable' 'ENV' 'Errno' 'Exception' 'Fiber' 'File' 'FileUtils' 'Flags' 'Flate' 'Float' 'Float32' 'Float64' 'GC' 'Gzip' 'Hash' 'HTML' 'HTTP' 'Indexable' 'IndexError' 'INI' 'Int' 'Int128' 'Int16' 'Int32' 'Int64' 'Int8' 'InvalidBigDecimalException' 'InvalidByteSequenceError' 'IO' 'IPSocket' 'Iterable' 'Iterator' 'JSON' 'KeyError' 'Levenshtein' 'Link' 'LLVM' 'Logger' 'Markdown' 'Math' 'MIME' 'Mutex' 'NamedTuple' 'Nil' 'NilAssertionError' 'NotImplementedError' 'Number' 'OAuth' 'OAuth2' 'Object' 'OpenSSL' 'OptionParser' 'OverflowError' 'PartialComparable' 'Path' 'Pointer' 'PrettyPrint' 'Proc' 'Process' 'Random' 'Range' 'Readline' 'Reference' 'Reflect' 'Regex' 'SemanticVersion' 'Set' 'Signal' 'Slice' 'Socket' 'Spec' 'StaticArray' 'String' 'StringPool' 'StringScanner' 'Struct' 'Symbol' 'System' 'TCPServer' 'TCPSocket' 'Termios' 'Time' 'Tuple' 'TypeCastError' 'UDPSocket' 'UInt128' 'UInt16' 'UInt32' 'UInt64' 'UInt8' 'Unicode' 'Union' 'UNIXServer' 'UNIXSocket' 'URI' 'UUID' 'VaList' 'Value' 'WeakRef' 'XML' 'YAML' 'Zip' 'Zlib'
 
-  # Highlighters
-  # ‾‾‾‾‾‾‾‾‾‾‾‾
+    # Highlighters
+    # ‾‾‾‾‾‾‾‾‾‾‾‾
 
-  add-highlighter shared/crystal regions
-  add-highlighter shared/crystal/code default-region group
+    add-highlighter shared/crystal regions
+    add-highlighter shared/crystal/code default-region group
 
-  # Comments
-  # https://crystal-lang.org/reference/syntax_and_semantics/comments.html
-  # Avoid string literals with interpolation
-  add-highlighter shared/crystal/comment region '#(?!\{)' '$' fill comment
+    # Comments
+    # https://crystal-lang.org/reference/syntax_and_semantics/comments.html
+    # Avoid string literals with interpolation
+    add-highlighter shared/crystal/comment region '#(?!\{)' '$' fill comment
 
-  # String
-  # https://crystal-lang.org/reference/syntax_and_semantics/literals/string.html
-  add-highlighter shared/crystal/string region '"' '(?<!\\)"' regions
-
-  # Percent string literals
-  # https://crystal-lang.org/reference/syntax_and_semantics/literals/string.html#percent-string-literals
-  add-highlighter shared/crystal/parenthesis-string region -recurse '\(' '%Q?\(' '\)' regions
-  add-highlighter shared/crystal/bracket-string region -recurse '\[' '%Q?\[' '\]' regions
-  add-highlighter shared/crystal/brace-string region -recurse '\{' '%Q?\{' '\}' regions
-  add-highlighter shared/crystal/angle-string region -recurse '<' '%Q?<' '>' regions
-  add-highlighter shared/crystal/pipe-string region '%Q?\|' '\|' regions
-  # Raw
-  # https://crystal-lang.org/reference/syntax_and_semantics/literals/string.html#percent-string-literals
-  # https://crystal-lang.org/reference/syntax_and_semantics/literals/string.html#percent-string-array-literal
-  # https://crystal-lang.org/reference/syntax_and_semantics/literals/symbol.html#percent-symbol-array-literal
-  add-highlighter shared/crystal/raw-parenthesis-string region -recurse '\(' '%[qwi]\(' '\)' fill string
-  add-highlighter shared/crystal/raw-bracket-string region -recurse '\[' '%[qwi]\[' '\]' fill string
-  add-highlighter shared/crystal/raw-brace-string region -recurse '\{' '%[qwi]\{' '\}' fill string
-  add-highlighter shared/crystal/raw-angle-string region -recurse '<' '%[qwi]<' '>' fill string
-  add-highlighter shared/crystal/raw-pipe-string region '%[qwi]\|' '\|' fill string
-
-  # Here document
-  # https://crystal-lang.org/reference/syntax_and_semantics/literals/string.html#heredoc
-  add-highlighter shared/crystal/heredoc region -match-capture '<<-(\w+)' '^\h*(\w+)$' regions
-  # Raw
-  add-highlighter shared/crystal/raw-heredoc region -match-capture "<<-'(\w+)'" '^\h*(\w+)$' regions
-  add-highlighter shared/crystal/raw-heredoc/fill default-region fill string
-  add-highlighter shared/crystal/raw-heredoc/interpolation region -recurse '\{' '#\{' '\}' fill meta
-
-  # Symbol
-  # https://crystal-lang.org/reference/syntax_and_semantics/literals/symbol.html
-  add-highlighter shared/crystal/quoted-symbol region ':"' '(?<!\\)"' fill value
-
-  # Regular expressions
-  # https://crystal-lang.org/reference/syntax_and_semantics/literals/regex.html
-  # https://crystal-lang.org/reference/syntax_and_semantics/literals/regex.html#modifiers
-  add-highlighter shared/crystal/regex region '/' '(?<!\\)/[imx]*' regions
-  # Avoid unterminated regular expression
-  add-highlighter shared/crystal/division region ' / ' '.\K' group
-
-  # Percent regex literals
-  # https://crystal-lang.org/reference/syntax_and_semantics/literals/regex.html#percent-regex-literals
-  add-highlighter shared/crystal/parenthesis-regex region -recurse '\(' '%r?\(' '\)[imx]*' regions
-  add-highlighter shared/crystal/bracket-regex region -recurse '\[' '%r?\[' '\][imx]*' regions
-  add-highlighter shared/crystal/brace-regex region -recurse '\{' '%r?\{' '\}[imx]*' regions
-  add-highlighter shared/crystal/angle-regex region -recurse '<' '%r?<' '>[imx]*' regions
-  add-highlighter shared/crystal/pipe-regex region '%r?\|' '\|[imx]*' regions
-
-  # Command
-  # https://crystal-lang.org/reference/syntax_and_semantics/literals/command.html
-  add-highlighter shared/crystal/command region '`' '(?<!\\)`' regions
-
-  # Percent command literals
-  add-highlighter shared/crystal/parenthesis-command region -recurse '\(' '%x?\(' '\)' regions
-  add-highlighter shared/crystal/bracket-command region -recurse '\[' '%x?\[' '\]' regions
-  add-highlighter shared/crystal/brace-command region -recurse '\{' '%x?\{' '\}' regions
-  add-highlighter shared/crystal/angle-command region -recurse '<' '%x?<' '>' regions
-  add-highlighter shared/crystal/pipe-command region '%x?\|' '\|' regions
-
-  evaluate-commands %sh[
-    # Keywords
-    eval "set -- $kak_quoted_opt_crystal_keywords"
-    regex="\\b(?:\\Q$1\\E"
-    shift
-    for keyword do
-      regex="$regex|\\Q$keyword\\E"
-    done
-    regex="$regex)\\b"
-    printf 'add-highlighter shared/crystal/code/keywords regex %s 0:keyword\n' "$regex"
-
-    # Attributes
-    eval "set -- $kak_quoted_opt_crystal_attributes"
-    regex="\\b(?:\\Q$1\\E"
-    shift
-    for attribute do
-      regex="$regex|\\Q$attribute\\E"
-    done
-    regex="$regex)\\b"
-    printf 'add-highlighter shared/crystal/code/attributes regex %s 0:attribute\n' "$regex"
-
-    # Symbols
-    eval "set -- $kak_quoted_opt_crystal_operators"
-    # Avoid to match modules
-    regex="(?<!:):(?:\\w+[?!]?"
-    for operator do
-      regex="$regex|\\Q$operator\\E"
-    done
-    regex="$regex)"
-    printf 'add-highlighter shared/crystal/code/symbols regex %%(%s) 0:value\n' "$regex"
-
-    # Objects
-    eval "set -- $kak_quoted_opt_crystal_objects"
-    regex="\\b(?:\\Q$1\\E"
-    shift
-    for object do
-      regex="$regex|\\Q$object\\E"
-    done
-    regex="$regex)\\b"
-    printf 'add-highlighter shared/crystal/code/objects regex %s 0:builtin\n' "$regex"
-
-    # Interpolation
     # String
-    # https://crystal-lang.org/reference/syntax_and_semantics/literals/string.html#interpolation
-    for id in string parenthesis-string bracket-string brace-string angle-string pipe-string heredoc; do
-      printf "
-        add-highlighter shared/crystal/$id/fill default-region fill string
-        add-highlighter shared/crystal/$id/interpolation region -recurse '\\{' '#\\{' '\\}' ref crystal
-      "
-    done
+    # https://crystal-lang.org/reference/syntax_and_semantics/literals/string.html
+    add-highlighter shared/crystal/string region '"' '(?<!\\)"' regions
+
+    # Percent string literals
+    # https://crystal-lang.org/reference/syntax_and_semantics/literals/string.html#percent-string-literals
+    add-highlighter shared/crystal/parenthesis-string region -recurse '\(' '%Q?\(' '\)' regions
+    add-highlighter shared/crystal/bracket-string region -recurse '\[' '%Q?\[' '\]' regions
+    add-highlighter shared/crystal/brace-string region -recurse '\{' '%Q?\{' '\}' regions
+    add-highlighter shared/crystal/angle-string region -recurse '<' '%Q?<' '>' regions
+    add-highlighter shared/crystal/pipe-string region '%Q?\|' '\|' regions
+    # Raw
+    # https://crystal-lang.org/reference/syntax_and_semantics/literals/string.html#percent-string-literals
+    # https://crystal-lang.org/reference/syntax_and_semantics/literals/string.html#percent-string-array-literal
+    # https://crystal-lang.org/reference/syntax_and_semantics/literals/symbol.html#percent-symbol-array-literal
+    add-highlighter shared/crystal/raw-parenthesis-string region -recurse '\(' '%[qwi]\(' '\)' fill string
+    add-highlighter shared/crystal/raw-bracket-string region -recurse '\[' '%[qwi]\[' '\]' fill string
+    add-highlighter shared/crystal/raw-brace-string region -recurse '\{' '%[qwi]\{' '\}' fill string
+    add-highlighter shared/crystal/raw-angle-string region -recurse '<' '%[qwi]<' '>' fill string
+    add-highlighter shared/crystal/raw-pipe-string region '%[qwi]\|' '\|' fill string
+
+    # Here document
+    # https://crystal-lang.org/reference/syntax_and_semantics/literals/string.html#heredoc
+    add-highlighter shared/crystal/heredoc region -match-capture '<<-(\w+)' '^\h*(\w+)$' regions
+    # Raw
+    add-highlighter shared/crystal/raw-heredoc region -match-capture "<<-'(\w+)'" '^\h*(\w+)$' regions
+    add-highlighter shared/crystal/raw-heredoc/fill default-region fill string
+    add-highlighter shared/crystal/raw-heredoc/interpolation region -recurse '\{' '#\{' '\}' fill meta
+
+    # Symbol
+    # https://crystal-lang.org/reference/syntax_and_semantics/literals/symbol.html
+    add-highlighter shared/crystal/quoted-symbol region ':"' '(?<!\\)"' fill value
 
     # Regular expressions
-    # https://crystal-lang.org/reference/syntax_and_semantics/literals/regex.html#interpolation
-    for id in regex parenthesis-regex bracket-regex brace-regex angle-regex pipe-regex; do
-      printf "
-        add-highlighter shared/crystal/$id/fill default-region fill meta
-        add-highlighter shared/crystal/$id/interpolation region -recurse '\\{' '#\\{' '\\}' ref crystal
-      "
-    done
+    # https://crystal-lang.org/reference/syntax_and_semantics/literals/regex.html
+    # https://crystal-lang.org/reference/syntax_and_semantics/literals/regex.html#modifiers
+    add-highlighter shared/crystal/regex region '/' '(?<!\\)/[imx]*' regions
+    # Avoid unterminated regular expression
+    add-highlighter shared/crystal/division region ' / ' '.\K' group
+
+    # Percent regex literals
+    # https://crystal-lang.org/reference/syntax_and_semantics/literals/regex.html#percent-regex-literals
+    add-highlighter shared/crystal/parenthesis-regex region -recurse '\(' '%r?\(' '\)[imx]*' regions
+    add-highlighter shared/crystal/bracket-regex region -recurse '\[' '%r?\[' '\][imx]*' regions
+    add-highlighter shared/crystal/brace-regex region -recurse '\{' '%r?\{' '\}[imx]*' regions
+    add-highlighter shared/crystal/angle-regex region -recurse '<' '%r?<' '>[imx]*' regions
+    add-highlighter shared/crystal/pipe-regex region '%r?\|' '\|[imx]*' regions
 
     # Command
-    for id in command parenthesis-command bracket-command brace-command angle-command pipe-command; do
-      printf "
-        add-highlighter shared/crystal/$id/fill default-region fill meta
-        add-highlighter shared/crystal/$id/interpolation region -recurse '\\{' '#\\{' '\\}' ref crystal
-      "
-    done
-  ]
+    # https://crystal-lang.org/reference/syntax_and_semantics/literals/command.html
+    add-highlighter shared/crystal/command region '`' '(?<!\\)`' regions
 
-  # Commands
-  # ‾‾‾‾‾‾‾‾
+    # Percent command literals
+    add-highlighter shared/crystal/parenthesis-command region -recurse '\(' '%x?\(' '\)' regions
+    add-highlighter shared/crystal/bracket-command region -recurse '\[' '%x?\[' '\]' regions
+    add-highlighter shared/crystal/brace-command region -recurse '\{' '%x?\{' '\}' regions
+    add-highlighter shared/crystal/angle-command region -recurse '<' '%x?<' '>' regions
+    add-highlighter shared/crystal/pipe-command region '%x?\|' '\|' regions
 
-  define-command -hidden crystal-new-line-inserted %{
-    # Copy previous line indent
-    try %{
-      execute-keys -draft 'K<a-&>'
-    }
-    # Remove empty line indent
-    try %{
-      execute-keys -draft 'k<a-x>s^\h+$<ret>d'
-    }
-  }
+    evaluate-commands %sh[
+        # Keywords
+        eval "set -- $kak_quoted_opt_crystal_keywords"
+        regex="\\b(?:\\Q$1\\E"
+        shift
+        for keyword do
+            regex="$regex|\\Q$keyword\\E"
+        done
+        regex="$regex)\\b"
+        printf 'add-highlighter shared/crystal/code/keywords regex %s 0:keyword\n' "$regex"
 
-  define-command -hidden crystal-fetch-keywords %{
-    set-register dquote %sh{
-      curl --location https://github.com/crystal-lang/crystal/raw/master/src/compiler/crystal/syntax/lexer.cr |
-      kak -f '%1scheck_ident_or_keyword\(:(\w+\??), \w+\)<ret>y%<a-R>a<ret><esc><a-_>a<del><esc>|sort<ret>'
-    }
-  }
+        # Attributes
+        eval "set -- $kak_quoted_opt_crystal_attributes"
+        regex="\\b(?:\\Q$1\\E"
+        shift
+        for attribute do
+            regex="$regex|\\Q$attribute\\E"
+        done
+        regex="$regex)\\b"
+        printf 'add-highlighter shared/crystal/code/attributes regex %s 0:attribute\n' "$regex"
 
-  define-command -hidden crystal-fetch-operators %{
-    set-register dquote %sh{
-      curl --location https://github.com/crystal-lang/crystal/raw/master/src/compiler/crystal/syntax/parser.cr |
-      kak -f '/AtomicWithMethodCheck =<ret>x1s:"([^"]+)"<ret>y%<a-R>i''<esc>a''<ret><esc><a-_>a<del><esc>'
-    }
-  }
+        # Symbols
+        eval "set -- $kak_quoted_opt_crystal_operators"
+        # Avoid to match modules
+        regex="(?<!:):(?:\\w+[?!]?"
+        for operator do
+            regex="$regex|\\Q$operator\\E"
+        done
+        regex="$regex)"
+        printf 'add-highlighter shared/crystal/code/symbols regex %%(%s) 0:value\n' "$regex"
 
-  define-command -hidden crystal-fetch-objects %{
-    set-register dquote %sh{
-      curl --location https://crystal-lang.org/api/ |
-      # Remove Top Level Namespace
-      kak -f '%1sdata-id="github.com/crystal-lang/crystal/(\w+)"<ret>)<a-space>y%<a-R>a<ret><esc><a-_>a<del><esc>'
+        # Objects
+        eval "set -- $kak_quoted_opt_crystal_objects"
+        regex="\\b(?:\\Q$1\\E"
+        shift
+        for object do
+            regex="$regex|\\Q$object\\E"
+        done
+        regex="$regex)\\b"
+        printf 'add-highlighter shared/crystal/code/objects regex %s 0:builtin\n' "$regex"
+
+        # Interpolation
+        # String
+        # https://crystal-lang.org/reference/syntax_and_semantics/literals/string.html#interpolation
+        for id in string parenthesis-string bracket-string brace-string angle-string pipe-string heredoc; do
+            printf "
+                add-highlighter shared/crystal/$id/fill default-region fill string
+                add-highlighter shared/crystal/$id/interpolation region -recurse '\\{' '#\\{' '\\}' ref crystal
+            "
+        done
+
+        # Regular expressions
+        # https://crystal-lang.org/reference/syntax_and_semantics/literals/regex.html#interpolation
+        for id in regex parenthesis-regex bracket-regex brace-regex angle-regex pipe-regex; do
+            printf "
+                add-highlighter shared/crystal/$id/fill default-region fill meta
+                add-highlighter shared/crystal/$id/interpolation region -recurse '\\{' '#\\{' '\\}' ref crystal
+            "
+        done
+
+        # Command
+        for id in command parenthesis-command bracket-command brace-command angle-command pipe-command; do
+            printf "
+                add-highlighter shared/crystal/$id/fill default-region fill meta
+                add-highlighter shared/crystal/$id/interpolation region -recurse '\\{' '#\\{' '\\}' ref crystal
+            "
+        done
+    ]
+
+    # Commands
+    # ‾‾‾‾‾‾‾‾
+
+    define-command -hidden crystal-new-line-inserted %{
+        # Copy previous line indent
+        try %{
+            execute-keys -draft 'K<a-&>'
+        }
+        # Remove empty line indent
+        try %{
+            execute-keys -draft 'k<a-x>s^\h+$<ret>d'
+        }
+    }
+
+    define-command -hidden crystal-fetch-keywords %{
+        set-register dquote %sh{
+            curl --location https://github.com/crystal-lang/crystal/raw/master/src/compiler/crystal/syntax/lexer.cr |
+            kak -f '%1scheck_ident_or_keyword\(:(\w+\??), \w+\)<ret>y%<a-R>a<ret><esc><a-_>a<del><esc>|sort<ret>'
+        }
+    }
+
+    define-command -hidden crystal-fetch-operators %{
+        set-register dquote %sh{
+            curl --location https://github.com/crystal-lang/crystal/raw/master/src/compiler/crystal/syntax/parser.cr |
+            kak -f '/AtomicWithMethodCheck =<ret>x1s:"([^"]+)"<ret>y%<a-R>i''<esc>a''<ret><esc><a-_>a<del><esc>'
+        }
+    }
+
+    define-command -hidden crystal-fetch-objects %{
+        set-register dquote %sh{
+            curl --location https://crystal-lang.org/api/ |
+            # Remove Top Level Namespace
+            kak -f '%1sdata-id="github.com/crystal-lang/crystal/(\w+)"<ret>)<a-space>y%<a-R>a<ret><esc><a-_>a<del><esc>'
+        }
     }
-  }
 §