Update runtime files.
diff --git a/runtime/syntax/cmod.vim b/runtime/syntax/cmod.vim
new file mode 100644
index 0000000..ea37682
--- /dev/null
+++ b/runtime/syntax/cmod.vim
@@ -0,0 +1,144 @@
+" Vim syntax file
+" Language: Cmod
+" Current Maintainer: Stephen R. van den Berg <srb@cuci.nl>
+" Last Change: 2018 Jan 23
+" Version: 2.9
+" Remark: Is used to edit Cmod files for Pike development.
+" Remark: Includes a highlighter for any embedded Autodoc format.
+
+" quit when a syntax file was already loaded
+if exists("b:current_syntax")
+ finish
+endif
+
+let s:cpo_save = &cpo
+set cpo&vim
+
+" Read the C syntax to start with
+runtime! syntax/c.vim
+unlet b:current_syntax
+
+if !exists("c_autodoc")
+ " For embedded Autodoc documentation
+ syn include @cmodAutodoc <sfile>:p:h/autodoc.vim
+ unlet b:current_syntax
+endif
+
+" Supports rotating amongst several same-level preprocessor conditionals
+packadd! matchit
+let b:match_words = "({:}\\@1<=),^\s*#\s*\%(if\%(n\?def\)\|else\|el\%(se\)\?if\|endif\)\>"
+
+" Cmod extensions
+syn keyword cmodStatement __INIT INIT EXIT GC_RECURSE GC_CHECK
+syn keyword cmodStatement EXTRA OPTIMIZE RETURN
+syn keyword cmodStatement ADD_EFUN ADD_EFUN2 ADD_FUNCTION
+syn keyword cmodStatement MK_STRING MK_STRING_SVALUE CONSTANT_STRLEN
+
+syn keyword cmodStatement SET_SVAL pop_n_elems pop_stack
+syn keyword cmodStatement SIMPLE_ARG_TYPE_ERROR Pike_sp Pike_fp MKPCHARP
+syn keyword cmodStatement SET_SVAL_TYPE REF_MAKE_CONST_STRING INC_PCHARP
+syn keyword cmodStatement PTR_FROM_INT INHERIT_FROM_PTR
+syn keyword cmodStatement DECLARE_CYCLIC BEGIN_CYCLIC END_CYCLIC
+syn keyword cmodStatement UPDATE_LOCATION UNSAFE_IS_ZERO SAFE_IS_ZERO
+syn keyword cmodStatement MKPCHARP_STR APPLY_MASTER current_storage
+syn keyword cmodStatement PIKE_MAP_VARIABLE size_shift
+syn keyword cmodStatement THREADS_ALLOW THREADS_DISALLOW
+
+syn keyword cmodStatement add_integer_constant ref_push_object
+syn keyword cmodStatement push_string apply_svalue free_svalue
+syn keyword cmodStatement get_inherit_storage get_storage
+syn keyword cmodStatement make_shared_binary_string push_int64
+syn keyword cmodStatement begin_shared_string end_shared_string
+syn keyword cmodStatement add_ref fast_clone_object clone_object
+syn keyword cmodStatement push_undefined push_int ref_push_string
+syn keyword cmodStatement free_string push_ulongest free_object
+syn keyword cmodStatement convert_stack_top_to_bignum push_array
+syn keyword cmodStatement push_object reduce_stack_top_bignum
+syn keyword cmodStatement push_static_text apply_current
+syn keyword cmodStatement assign_svalue free_program destruct_object
+syn keyword cmodStatement start_new_program low_inherit stack_swap
+syn keyword cmodStatement generic_error_program end_program
+syn keyword cmodStatement free_array apply_external copy_mapping
+syn keyword cmodStatement push_constant_text ref_push_mapping
+syn keyword cmodStatement mapping_insert mapping_string_insert_string
+syn keyword cmodStatement f_aggregate_mapping f_aggregate apply
+syn keyword cmodStatement push_mapping push_svalue low_mapping_lookup
+syn keyword cmodStatement assign_svalues_no_free f_add
+syn keyword cmodStatement push_empty_string stack_dup assign_lvalue
+syn keyword cmodStatement low_mapping_string_lookup allocate_mapping
+syn keyword cmodStatement copy_shared_string make_shared_binary_string0
+syn keyword cmodStatement f_call_function f_index f_utf8_to_string
+syn keyword cmodStatement finish_string_builder init_string_builder
+syn keyword cmodStatement reset_string_builder free_string_builder
+syn keyword cmodStatement string_builder_putchar get_all_args
+syn keyword cmodStatement add_shared_strings check_all_args
+syn keyword cmodStatement do_inherit add_string_constant
+syn keyword cmodStatement add_program_constant set_init_callback
+syn keyword cmodStatement simple_mapping_string_lookup
+syn keyword cmodStatement f_sprintf push_text string_has_null
+syn keyword cmodStatement end_and_resize_shared_string
+
+syn keyword cmodStatement args sp
+
+syn keyword cmodStatement free
+
+syn keyword cmodConstant ID_PROTECTED ID_FINAL PIKE_DEBUG
+syn keyword cmodConstant NUMBER_NUMBER
+syn keyword cmodConstant PIKE_T_INT PIKE_T_STRING PIKE_T_ARRAY
+syn keyword cmodConstant PIKE_T_MULTISET PIKE_T_OBJECT PIKE_T_MAPPING
+syn keyword cmodConstant NUMBER_UNDEFINED PIKE_T_PROGRAM PIKE_T_FUNCTION
+syn keyword cmodConstant T_OBJECT T_STRING T_ARRAY T_MAPPING
+
+syn keyword cmodException SET_ONERROR UNSET_ONERROR ONERROR
+syn keyword cmodException CALL_AND_UNSET_ONERROR
+
+syn keyword cmodDebug Pike_fatal Pike_error check_stack
+
+syn keyword cmodAccess public protected private INHERIT
+syn keyword cmodAccess CTYPE CVAR PIKEVAR PIKEFUN
+
+syn keyword cmodModifier efun export flags optflags optfunc
+syn keyword cmodModifier type rawtype errname name c_name prototype
+syn keyword cmodModifier program_flags gc_trivial PMOD_EXPORT
+syn keyword cmodModifier ATTRIBUTE noclone noinline
+syn keyword cmodModifier tOr tFuncV tInt tMix tVoid tStr tMap tPrg
+syn keyword cmodModifier tSetvar tArr tMult tMultiset
+syn keyword cmodModifier tArray tMapping tString tSetvar tVar
+
+syn keyword cmodType bool mapping string multiset array mixed
+syn keyword cmodType object function program auto svalue
+syn keyword cmodType bignum longest zero pike_string
+syn keyword cmodType this this_program THIS INT_TYPE INT64 INT32
+syn keyword cmodType p_wchar2 PCHARP p_wchar1 p_wchar0 MP_INT
+
+syn keyword cmodOperator _destruct create __hash _sizeof _indices _values
+syn keyword cmodOperator _is_type _sprintf _equal _m_delete _get_iterator
+syn keyword cmodOperator _search _types _serialize _deserialize
+syn keyword cmodOperator _size_object _random _sqrt TYPEOF SUBTYPEOF
+syn keyword cmodOperator LIKELY UNLIKELY
+
+syn keyword cmodStructure DECLARATIONS PIKECLASS DECLARE_STORAGE
+
+if !exists("c_autodoc")
+ syn match cmodAutodocReal display contained "\%(//\|[/ \t\v]\*\|^\*\)\@2<=!.*" contains=@cmodAutodoc containedin=cComment,cCommentL
+ syn cluster cCommentGroup add=cmodAutodocReal
+ syn cluster cPreProcGroup add=cmodAutodocReal
+endif
+
+" Default highlighting
+hi def link cmodAccess Statement
+hi def link cmodOperator Operator
+hi def link cmodStatement Statement
+hi def link cmodConstant Constant
+hi def link cmodModifier Type
+hi def link cmodType Type
+hi def link cmodStorageClass StorageClass
+hi def link cmodStructure Structure
+hi def link cmodException Exception
+hi def link cmodDebug Debug
+
+let b:current_syntax = "cmod"
+
+let &cpo = s:cpo_save
+unlet s:cpo_save
+" vim: ts=8