diff --git a/runtime/syntax/i3config.vim b/runtime/syntax/i3config.vim
new file mode 100644
index 0000000..a8b6637
--- /dev/null
+++ b/runtime/syntax/i3config.vim
@@ -0,0 +1,256 @@
+" Vim syntax file
+" Language: i3 config file
+" Maintainer: Mohamed Boughaba <mohamed dot bgb at gmail dot com>
+" Version: 0.4
+" Last Change: 2021 Dec 14
+
+" References:
+" http://i3wm.org/docs/userguide.html#configuring
+" http://vimdoc.sourceforge.net/htmldoc/syntax.html
+"
+"
+" Quit when a syntax file was already loaded
+if exists("b:current_syntax")
+  finish
+endif
+
+scriptencoding utf-8
+
+" Error
+syn match i3ConfigError /.*/
+
+" Todo
+syn keyword i3ConfigTodo TODO FIXME XXX contained
+
+" Comment
+" Comments are started with a # and can only be used at the beginning of a line
+syn match i3ConfigComment /^\s*#.*$/ contains=i3ConfigTodo
+
+" Font
+" A FreeType font description is composed by:
+" a font family, a style, a weight, a variant, a stretch and a size.
+syn match i3ConfigFontSeparator /,/ contained
+syn match i3ConfigFontSeparator /:/ contained
+syn keyword i3ConfigFontKeyword font contained
+syn match i3ConfigFontNamespace /\w\+:/ contained contains=i3ConfigFontSeparator
+syn match i3ConfigFontContent /-\?\w\+\(-\+\|\s\+\|,\)/ contained contains=i3ConfigFontNamespace,i3ConfigFontSeparator,i3ConfigFontKeyword
+syn match i3ConfigFontSize /\s\=\d\+\(px\)\?\s\?$/ contained
+syn match i3ConfigFont /^\s*font\s\+.*$/ contains=i3ConfigFontContent,i3ConfigFontSeparator,i3ConfigFontSize,i3ConfigFontNamespace
+syn match i3ConfigFont /^\s*font\s\+.*\(\\\_.*\)\?$/ contains=i3ConfigFontContent,i3ConfigFontSeparator,i3ConfigFontSize,i3ConfigFontNamespace
+syn match i3ConfigFont /^\s*font\s\+.*\(\\\_.*\)\?[^\\]\+$/ contains=i3ConfigFontContent,i3ConfigFontSeparator,i3ConfigFontSize,i3ConfigFontNamespace
+syn match i3ConfigFont /^\s*font\s\+\(\(.*\\\_.*\)\|\(.*[^\\]\+$\)\)/ contains=i3ConfigFontContent,i3ConfigFontSeparator,i3ConfigFontSize,i3ConfigFontNamespace
+
+" variables
+syn match i3ConfigString /\(['"]\)\(.\{-}\)\1/ contained
+syn match i3ConfigColor /#\w\{6}/ contained
+syn match i3ConfigVariableModifier /+/ contained
+syn match i3ConfigVariableAndModifier /+\w\+/ contained contains=i3ConfigVariableModifier
+syn match i3ConfigVariable /\$\w\+\(\(-\w\+\)\+\)\?\(\s\|+\)\?/ contains=i3ConfigVariableModifier,i3ConfigVariableAndModifier
+syn keyword i3ConfigInitializeKeyword set contained
+syn match i3ConfigInitialize /^\s*set\s\+.*$/ contains=i3ConfigVariable,i3ConfigInitializeKeyword,i3ConfigColor,i3ConfigString
+
+" Gaps
+syn keyword i3ConfigGapStyleKeyword inner outer horizontal vertical top right bottom left current all set plus minus toggle up down contained
+syn match i3ConfigGapStyle /^\s*\(gaps\)\s\+\(inner\|outer\|horizontal\|vertical\|left\|top\|right\|bottom\)\(\s\+\(current\|all\)\)\?\(\s\+\(set\|plus\|minus\|toggle\)\)\?\(\s\+\(-\?\d\+\|\$.*\)\)$/ contains=i3ConfigGapStyleKeyword,i3ConfigNumber,i3ConfigVariable
+syn keyword i3ConfigSmartGapKeyword on inverse_outer contained
+syn match i3ConfigSmartGap /^\s*smart_gaps\s\+\(on\|inverse_outer\)\s\?$/ contains=i3ConfigSmartGapKeyword
+syn keyword i3ConfigSmartBorderKeyword on no_gaps contained
+syn match i3ConfigSmartBorder /^\s*smart_borders\s\+\(on\|no_gaps\)\s\?$/ contains=i3ConfigSmartBorderKeyword
+
+" Keyboard bindings
+syn keyword i3ConfigAction toggle fullscreen restart key import kill shrink grow contained
+syn keyword i3ConfigAction focus move grow height width split layout resize restore reload mute unmute exit mode workspace container to contained
+syn match i3ConfigModifier /\w\++\w\+\(\(+\w\+\)\+\)\?/ contained contains=i3ConfigVariableModifier
+syn match i3ConfigNumber /\s\d\+/ contained
+syn match i3ConfigUnit /\sp\(pt\|x\)/ contained
+syn match i3ConfigUnitOr /\sor/ contained
+syn keyword i3ConfigBindKeyword bindsym bindcode exec gaps border contained
+syn match i3ConfigBindArgument /--\w\+\(\(-\w\+\)\+\)\?\s/ contained
+syn match i3ConfigBind /^\s*\(bindsym\|bindcode\)\s\+.*$/ contains=i3ConfigVariable,i3ConfigBindKeyword,i3ConfigVariableAndModifier,i3ConfigNumber,i3ConfigUnit,i3ConfigUnitOr,i3ConfigBindArgument,i3ConfigModifier,i3ConfigAction,i3ConfigString,i3ConfigGapStyleKeyword,i3ConfigBorderStyleKeyword
+
+" Floating
+syn keyword i3ConfigSizeSpecial x contained
+syn match i3ConfigNegativeSize /-/ contained
+syn match i3ConfigSize /-\?\d\+\s\?x\s\?-\?\d\+/ contained contains=i3ConfigSizeSpecial,i3ConfigNumber,i3ConfigNegativeSize
+syn match i3ConfigFloating /^\s*floating_modifier\s\+\$\w\+\d\?/ contains=i3ConfigVariable
+syn match i3ConfigFloating /^\s*floating_\(maximum\|minimum\)_size\s\+-\?\d\+\s\?x\s\?-\?\d\+/ contains=i3ConfigSize
+
+" Orientation
+syn keyword i3ConfigOrientationKeyword vertical horizontal auto contained
+syn match i3ConfigOrientation /^\s*default_orientation\s\+\(vertical\|horizontal\|auto\)\s\?$/ contains=i3ConfigOrientationKeyword
+
+" Layout
+syn keyword i3ConfigLayoutKeyword default stacking tabbed contained
+syn match i3ConfigLayout /^\s*workspace_layout\s\+\(default\|stacking\|tabbed\)\s\?$/ contains=i3ConfigLayoutKeyword
+
+" Border style
+syn keyword i3ConfigBorderStyleKeyword none normal pixel contained
+syn match i3ConfigBorderStyle /^\s*\(new_window\|new_float\|default_border\|default_floating_border\)\s\+\(none\|\(normal\|pixel\)\(\s\+\d\+\)\?\(\s\+\$\w\+\(\(-\w\+\)\+\)\?\(\s\|+\)\?\)\?\)\s\?$/ contains=i3ConfigBorderStyleKeyword,i3ConfigNumber,i3ConfigVariable
+
+" Hide borders and edges
+syn keyword i3ConfigEdgeKeyword none vertical horizontal both smart smart_no_gaps contained
+syn match i3ConfigEdge /^\s*hide_edge_borders\s\+\(none\|vertical\|horizontal\|both\|smart\|smart_no_gaps\)\s\?$/ contains=i3ConfigEdgeKeyword
+
+" Arbitrary commands for specific windows (for_window)
+syn keyword i3ConfigCommandKeyword for_window contained
+syn region i3ConfigWindowStringSpecial start=+"+  skip=+\\"+  end=+"+ contained contains=i3ConfigString
+syn region i3ConfigWindowCommandSpecial start="\[" end="\]" contained contains=i3ConfigWindowStringSpacial,i3ConfigString
+syn match i3ConfigArbitraryCommand /^\s*for_window\s\+.*$/ contains=i3ConfigWindowCommandSpecial,i3ConfigCommandKeyword,i3ConfigBorderStyleKeyword,i3ConfigLayoutKeyword,i3ConfigOrientationKeyword,Size,i3ConfigNumber
+
+" Disable focus open opening
+syn keyword i3ConfigNoFocusKeyword no_focus contained
+syn match i3ConfigDisableFocus /^\s*no_focus\s\+.*$/ contains=i3ConfigWindowCommandSpecial,i3ConfigNoFocusKeyword
+
+" Move client to specific workspace automatically
+syn keyword i3ConfigAssignKeyword assign contained
+syn match i3ConfigAssignSpecial /→/ contained
+syn match i3ConfigAssign /^\s*assign\s\+.*$/ contains=i3ConfigAssignKeyword,i3ConfigWindowCommandSpecial,i3ConfigAssignSpecial
+
+" X resources
+syn keyword i3ConfigResourceKeyword set_from_resource contained
+syn match i3ConfigResource /^\s*set_from_resource\s\+.*$/ contains=i3ConfigResourceKeyword,i3ConfigWindowCommandSpecial,i3ConfigColor,i3ConfigVariable
+
+" Auto start applications
+syn keyword i3ConfigExecKeyword exec exec_always contained
+syn match i3ConfigNoStartupId /--no-startup-id/ contained " We are not using i3ConfigBindArgument as only no-startup-id is supported here
+syn match i3ConfigExec /^\s*exec\(_always\)\?\s\+.*$/ contains=i3ConfigExecKeyword,i3ConfigNoStartupId,i3ConfigString
+
+" Automatically putting workspaces on specific screens
+syn keyword i3ConfigWorkspaceKeyword workspace contained
+syn keyword i3ConfigOutput output contained
+syn match i3ConfigWorkspace /^\s*workspace\s\+.*$/ contains=i3ConfigWorkspaceKeyword,i3ConfigNumber,i3ConfigString,i3ConfigOutput
+
+" Changing colors
+syn keyword i3ConfigClientColorKeyword client focused focused_inactive unfocused urgent placeholder background contained
+syn match i3ConfigClientColor /^\s*client.\w\+\s\+.*$/ contains=i3ConfigClientColorKeyword,i3ConfigColor,i3ConfigVariable
+
+syn keyword i3ConfigTitleAlignKeyword left center right contained
+syn match i3ConfigTitleAlign /^\s*title_align\s\+.*$/ contains=i3ConfigTitleAlignKeyword
+
+" Interprocess communication
+syn match i3ConfigInterprocessKeyword /ipc-socket/ contained
+syn match i3ConfigInterprocess /^\s*ipc-socket\s\+.*$/ contains=i3ConfigInterprocessKeyword
+
+" Mouse warping
+syn keyword i3ConfigMouseWarpingKeyword mouse_warping contained
+syn keyword i3ConfigMouseWarpingType output none contained
+syn match i3ConfigMouseWarping /^\s*mouse_warping\s\+\(output\|none\)\s\?$/ contains=i3ConfigMouseWarpingKeyword,i3ConfigMouseWarpingType
+
+" Focus follows mouse
+syn keyword i3ConfigFocusFollowsMouseKeyword focus_follows_mouse contained
+syn keyword i3ConfigFocusFollowsMouseType yes no contained
+syn match i3ConfigFocusFollowsMouse /^\s*focus_follows_mouse\s\+\(yes\|no\)\s\?$/ contains=i3ConfigFocusFollowsMouseKeyword,i3ConfigFocusFollowsMouseType
+
+" Popups during fullscreen mode
+syn keyword i3ConfigPopupOnFullscreenKeyword popup_during_fullscreen contained
+syn keyword i3ConfigPopuponFullscreenType smart ignore leave_fullscreen contained
+syn match i3ConfigPopupOnFullscreen /^\s*popup_during_fullscreen\s\+\w\+\s\?$/ contains=i3ConfigPopupOnFullscreenKeyword,i3ConfigPopupOnFullscreenType
+
+" Focus wrapping
+syn keyword i3ConfigFocusWrappingKeyword force_focus_wrapping focus_wrapping contained
+syn keyword i3ConfigFocusWrappingType yes no contained
+syn match i3ConfigFocusWrapping /^\s*\(force_\)\?focus_wrapping\s\+\(yes\|no\)\s\?$/ contains=i3ConfigFocusWrappingType,i3ConfigFocusWrappingKeyword
+
+" Forcing Xinerama
+syn keyword i3ConfigForceXineramaKeyword force_xinerama contained
+syn match i3ConfigForceXinerama /^\s*force_xinerama\s\+\(yes\|no\)\s\?$/ contains=i3ConfigFocusWrappingType,i3ConfigForceXineramaKeyword
+
+" Automatic back-and-forth when switching to the current workspace
+syn keyword i3ConfigAutomaticSwitchKeyword workspace_auto_back_and_forth contained
+syn match i3ConfigAutomaticSwitch /^\s*workspace_auto_back_and_forth\s\+\(yes\|no\)\s\?$/ contains=i3ConfigFocusWrappingType,i3ConfigAutomaticSwitchKeyword
+
+" Delay urgency hint
+syn keyword i3ConfigTimeUnit ms contained
+syn keyword i3ConfigDelayUrgencyKeyword force_display_urgency_hint contained
+syn match i3ConfigDelayUrgency /^\s*force_display_urgency_hint\s\+\d\+\s\+ms\s\?$/ contains=i3ConfigFocusWrappingType,i3ConfigDelayUrgencyKeyword,i3ConfigNumber,i3ConfigTimeUnit
+
+" Focus on window activation
+syn keyword i3ConfigFocusOnActivationKeyword focus_on_window_activation contained
+syn keyword i3ConfigFocusOnActivationType smart urgent focus none contained
+syn match i3ConfigFocusOnActivation /^\s*focus_on_window_activation\s\+\(smart\|urgent\|focus\|none\)\s\?$/  contains=i3ConfigFocusOnActivationKeyword,i3ConfigFocusOnActivationType
+
+" Automatic back-and-forth when switching to the current workspace
+syn keyword i3ConfigDrawingMarksKeyword show_marks contained
+syn match i3ConfigDrawingMarks /^\s*show_marks\s\+\(yes\|no\)\s\?$/ contains=i3ConfigFocusWrappingType,i3ConfigDrawingMarksKeyword
+
+" Group mode/bar
+syn keyword i3ConfigBlockKeyword mode bar colors i3bar_command status_command position exec mode hidden_state modifier id position output background statusline tray_output tray_padding separator separator_symbol workspace_buttons strip_workspace_numbers binding_mode_indicator focused_workspace active_workspace inactive_workspace urgent_workspace binding_mode contained
+syn region i3ConfigBlock start=+.*s\?{$+ end=+^}$+ contains=i3ConfigBlockKeyword,i3ConfigString,i3ConfigBind,i3ConfigComment,i3ConfigFont,i3ConfigFocusWrappingType,i3ConfigColor,i3ConfigVariable transparent keepend extend
+
+" Line continuation
+syn region i3ConfigLineCont start=/^.*\\$/ end=/^.*$/ contains=i3ConfigBlockKeyword,i3ConfigString,i3ConfigBind,i3ConfigComment,i3ConfigFont,i3ConfigFocusWrappingType,i3ConfigColor,i3ConfigVariable transparent keepend extend
+
+" Define the highlighting.
+hi def link i3ConfigError                           Error
+hi def link i3ConfigTodo                            Todo
+hi def link i3ConfigComment                         Comment
+hi def link i3ConfigFontContent                     Type
+hi def link i3ConfigFocusOnActivationType           Type
+hi def link i3ConfigPopupOnFullscreenType           Type
+hi def link i3ConfigOrientationKeyword              Type
+hi def link i3ConfigMouseWarpingType                Type
+hi def link i3ConfigFocusFollowsMouseType           Type
+hi def link i3ConfigGapStyleKeyword                 Type
+hi def link i3ConfigTitleAlignKeyword               Type
+hi def link i3ConfigSmartGapKeyword                 Type
+hi def link i3ConfigSmartBorderKeyword              Type
+hi def link i3ConfigLayoutKeyword                   Type
+hi def link i3ConfigBorderStyleKeyword              Type
+hi def link i3ConfigEdgeKeyword                     Type
+hi def link i3ConfigAction                          Type
+hi def link i3ConfigCommand                         Type
+hi def link i3ConfigOutput                          Type
+hi def link i3ConfigWindowCommandSpecial            Type
+hi def link i3ConfigFocusWrappingType               Type
+hi def link i3ConfigUnitOr                          Type
+hi def link i3ConfigFontSize                        Constant
+hi def link i3ConfigColor                           Constant
+hi def link i3ConfigNumber                          Constant
+hi def link i3ConfigUnit                            Constant
+hi def link i3ConfigVariableAndModifier             Constant
+hi def link i3ConfigTimeUnit                        Constant
+hi def link i3ConfigModifier                        Constant
+hi def link i3ConfigString                          Constant
+hi def link i3ConfigNegativeSize                    Constant
+hi def link i3ConfigFontSeparator                   Special
+hi def link i3ConfigVariableModifier                Special
+hi def link i3ConfigSizeSpecial                     Special
+hi def link i3ConfigWindowSpecial                   Special
+hi def link i3ConfigAssignSpecial                   Special
+hi def link i3ConfigFontNamespace                   PreProc
+hi def link i3ConfigBindArgument                    PreProc
+hi def link i3ConfigNoStartupId                     PreProc
+hi def link i3ConfigFontKeyword                     Identifier
+hi def link i3ConfigBindKeyword                     Identifier
+hi def link i3ConfigOrientation                     Identifier
+hi def link i3ConfigGapStyle                        Identifier
+hi def link i3ConfigTitleAlign                      Identifier
+hi def link i3ConfigSmartGap                        Identifier
+hi def link i3ConfigSmartBorder                     Identifier
+hi def link i3ConfigLayout                          Identifier
+hi def link i3ConfigBorderStyle                     Identifier
+hi def link i3ConfigEdge                            Identifier
+hi def link i3ConfigFloating                        Identifier
+hi def link i3ConfigCommandKeyword                  Identifier
+hi def link i3ConfigNoFocusKeyword                  Identifier
+hi def link i3ConfigInitializeKeyword               Identifier
+hi def link i3ConfigAssignKeyword                   Identifier
+hi def link i3ConfigResourceKeyword                 Identifier
+hi def link i3ConfigExecKeyword                     Identifier
+hi def link i3ConfigWorkspaceKeyword                Identifier
+hi def link i3ConfigClientColorKeyword              Identifier
+hi def link i3ConfigInterprocessKeyword             Identifier
+hi def link i3ConfigMouseWarpingKeyword             Identifier
+hi def link i3ConfigFocusFollowsMouseKeyword        Identifier
+hi def link i3ConfigPopupOnFullscreenKeyword        Identifier
+hi def link i3ConfigFocusWrappingKeyword            Identifier
+hi def link i3ConfigForceXineramaKeyword            Identifier
+hi def link i3ConfigAutomaticSwitchKeyword          Identifier
+hi def link i3ConfigDelayUrgencyKeyword             Identifier
+hi def link i3ConfigFocusOnActivationKeyword        Identifier
+hi def link i3ConfigDrawingMarksKeyword             Identifier
+hi def link i3ConfigBlockKeyword                    Identifier
+hi def link i3ConfigVariable                        Statement
+hi def link i3ConfigArbitraryCommand                Type
+
+let b:current_syntax = "i3config"