diff --git a/tests/examples/awful/mouse/coords.lua b/tests/examples/awful/mouse/coords.lua
index c6cf46fe2..3a42faa32 100644
--- a/tests/examples/awful/mouse/coords.lua
+++ b/tests/examples/awful/mouse/coords.lua
@@ -11,3 +11,5 @@ mouse.coords {
 }
 
 mouse.push_history() --DOC_HIDE
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/awful/placement/align.lua b/tests/examples/awful/placement/align.lua
index 24570cee8..6aa158a07 100644
--- a/tests/examples/awful/placement/align.lua
+++ b/tests/examples/awful/placement/align.lua
@@ -23,3 +23,5 @@ c = client.gen_fake {x = screen[3].geometry.x+10, y = screen[3].geometry.y+10, w
 placement.align(c, {position = "center_horizontal", honor_workarea=true})
 
 return {hide_lines=true}
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/awful/placement/bottom.lua b/tests/examples/awful/placement/bottom.lua
index cc56c10a8..b997028cd 100644
--- a/tests/examples/awful/placement/bottom.lua
+++ b/tests/examples/awful/placement/bottom.lua
@@ -14,3 +14,5 @@ awful.placement.bottom(client.focus)
 assert(c.x == screen[1].geometry.width/2-40/2-c.border_width--DOC_HIDE
        and c.y==screen[1].geometry.height-30-2*c.border_width--DOC_HIDE
        and c.width==40 and c.height==30)--DOC_HIDE
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/awful/placement/bottom_left.lua b/tests/examples/awful/placement/bottom_left.lua
index a06abe28b..7ca40b3b1 100644
--- a/tests/examples/awful/placement/bottom_left.lua
+++ b/tests/examples/awful/placement/bottom_left.lua
@@ -17,3 +17,5 @@ assert( --DOC_HIDE
        and c.width == 40--DOC_HIDE
        and c.height == 30--DOC_HIDE
        ) --DOC_HIDE
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/awful/placement/bottom_right.lua b/tests/examples/awful/placement/bottom_right.lua
index 2abb44900..1503a9292 100644
--- a/tests/examples/awful/placement/bottom_right.lua
+++ b/tests/examples/awful/placement/bottom_right.lua
@@ -14,3 +14,5 @@ awful.placement.bottom_right(client.focus)
 assert(c.x == screen[1].geometry.width-40-2*c.border_width) --DOC_HIDE
 assert(c.y==screen[1].geometry.height-30-2*c.border_width) --DOC_HIDE
 assert(c.width==40 and c.height==30)--DOC_HIDE
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/awful/placement/center_horizontal.lua b/tests/examples/awful/placement/center_horizontal.lua
index 931b947c1..5ee87c67e 100644
--- a/tests/examples/awful/placement/center_horizontal.lua
+++ b/tests/examples/awful/placement/center_horizontal.lua
@@ -13,3 +13,5 @@ awful.placement.center_horizontal(client.focus)
 assert(c.x == screen[1].geometry.width/2-40/2-c.border_width)--DOC_HIDE
 assert(c.y==35)--DOC_HIDE
 assert(c.width==40 and c.height==30)--DOC_HIDE
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/awful/placement/center_vertical.lua b/tests/examples/awful/placement/center_vertical.lua
index cf3fd646d..dea446ad0 100644
--- a/tests/examples/awful/placement/center_vertical.lua
+++ b/tests/examples/awful/placement/center_vertical.lua
@@ -9,3 +9,5 @@ local awful = {placement = require("awful.placement")} --DOC_HIDE
 --[[local c = ]]client.gen_fake {x = 45, y = 35, width=40, height=30} --DOC_HIDE
 
 awful.placement.center_vertical(client.focus)
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/awful/placement/centered.lua b/tests/examples/awful/placement/centered.lua
index d6b1e3aec..796494db8 100644
--- a/tests/examples/awful/placement/centered.lua
+++ b/tests/examples/awful/placement/centered.lua
@@ -14,3 +14,5 @@ awful.placement.centered(client.focus)
 assert(c.x == screen[1].geometry.width/2-40/2-c.border_width) --DOC_HIDE
 assert(c.y==screen[1].geometry.height/2-30/2-c.border_width) --DOC_HIDE
 assert(c.width==40 and c.height==30)--DOC_HIDE
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/awful/placement/closest_mouse.lua b/tests/examples/awful/placement/closest_mouse.lua
index 9c37ac296..f62324505 100644
--- a/tests/examples/awful/placement/closest_mouse.lua
+++ b/tests/examples/awful/placement/closest_mouse.lua
@@ -60,3 +60,5 @@ local _, corner = awful.placement.closest_corner(
     {include_sides = true, bounding_rect = {x=0, y=0, width=200, height=200}}
 )
 print("Closest corner:", corner)
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/awful/placement/compose.lua b/tests/examples/awful/placement/compose.lua
index 1e547e8c0..2ac834272 100644
--- a/tests/examples/awful/placement/compose.lua
+++ b/tests/examples/awful/placement/compose.lua
@@ -9,3 +9,5 @@ f(client.focus)
 local sg = screen[1].geometry--DOC_HIDE
 assert(c.x == sg.x and c.y==sg.height/2-30/2-c.border_width--DOC_HIDE
        and c.width==40 and c.height==30)--DOC_HIDE
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/awful/placement/compose2.lua b/tests/examples/awful/placement/compose2.lua
index 4a49f6634..7fb40fa17 100644
--- a/tests/examples/awful/placement/compose2.lua
+++ b/tests/examples/awful/placement/compose2.lua
@@ -16,3 +16,5 @@ assert(c.x == wa.x and geo.x == wa.x)--DOC_HIDE
 assert(c.y == wa.y) --DOC_HIDE
 assert(c.width  == wa.width/2 - 2*c.border_width)--DOC_HIDE
 assert(c.height == wa.height  - 2*c.border_width)--DOC_HIDE
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/awful/placement/left.lua b/tests/examples/awful/placement/left.lua
index f16ba7b53..9d680e103 100644
--- a/tests/examples/awful/placement/left.lua
+++ b/tests/examples/awful/placement/left.lua
@@ -13,3 +13,5 @@ awful.placement.left(client.focus)
 
 assert(c.x == 0 and c.y==screen[1].geometry.height/2-30/2-c.border_width--DOC_HIDE
        and c.width==40 and c.height==30)--DOC_HIDE
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/awful/placement/maximize.lua b/tests/examples/awful/placement/maximize.lua
index aecb52274..f7063e524 100644
--- a/tests/examples/awful/placement/maximize.lua
+++ b/tests/examples/awful/placement/maximize.lua
@@ -16,3 +16,5 @@ local c1 = client.gen_fake {--DOC_HIDE
                c1.height+2*c1.border_width == screen[1].geometry.height) --DOC_HIDE
     end --DOC_HIDE
 end --DOC_HIDE
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/awful/placement/maximize_horizontally.lua b/tests/examples/awful/placement/maximize_horizontally.lua
index dd06ab3a6..d77bb8bf1 100644
--- a/tests/examples/awful/placement/maximize_horizontally.lua
+++ b/tests/examples/awful/placement/maximize_horizontally.lua
@@ -13,3 +13,5 @@ placement.maximize_horizontally(c)
 assert(c.width + 2*c.border_width == screen[1].geometry.width) --DOC_HIDE
 assert(c.y == 35) --DOC_HIDE
 assert(c.height == 30) --DOC_HIDE
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/awful/placement/maximize_vertically.lua b/tests/examples/awful/placement/maximize_vertically.lua
index 8ecdfec21..18fa914e3 100644
--- a/tests/examples/awful/placement/maximize_vertically.lua
+++ b/tests/examples/awful/placement/maximize_vertically.lua
@@ -13,3 +13,5 @@ placement.maximize_vertically(c)
 assert(c.height+2*c.border_width == screen[1].geometry.height)--DOC_HIDE
 assert(c.x == 45) --DOC_HIDE
 assert(c.width == 40) --DOC_HIDE
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/awful/placement/next_to_mouse.lua b/tests/examples/awful/placement/next_to_mouse.lua
index 45c76ddce..c5e940542 100644
--- a/tests/examples/awful/placement/next_to_mouse.lua
+++ b/tests/examples/awful/placement/next_to_mouse.lua
@@ -6,3 +6,5 @@ mouse.coords {x= 50, y=50} --DOC_HIDE
 mouse.push_history() --DOC_HIDE
 
 awful.placement.next_to_mouse(client.focus)
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/awful/placement/no_offscreen.lua b/tests/examples/awful/placement/no_offscreen.lua
index 1f65cdb42..b596ab26e 100644
--- a/tests/examples/awful/placement/no_offscreen.lua
+++ b/tests/examples/awful/placement/no_offscreen.lua
@@ -7,3 +7,5 @@ print("Before:", "x="..c.x..", y="..c.y..", width="..c.width..", height="..c.hei
 awful.placement.no_offscreen(c)--, {honor_workarea=true, margins=40})
 
 print("After:", "x="..c.x..", y="..c.y..", width="..c.width..", height="..c.height) --DOC_HIDE
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/awful/placement/no_overlap.lua b/tests/examples/awful/placement/no_overlap.lua
index 14d09a376..9faf08b69 100644
--- a/tests/examples/awful/placement/no_overlap.lua
+++ b/tests/examples/awful/placement/no_overlap.lua
@@ -24,3 +24,5 @@ awful.placement.no_overlap(client.focus) --FIXME --DOC_HIDE
 
 --TODO maximized + no_overlap --DOC_HIDE
 --TODO add 9 clients with no_overlap on all of them --DOC_HIDE
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/awful/placement/resize_to_mouse.lua b/tests/examples/awful/placement/resize_to_mouse.lua
index a7f1a1a29..db561fd02 100644
--- a/tests/examples/awful/placement/resize_to_mouse.lua
+++ b/tests/examples/awful/placement/resize_to_mouse.lua
@@ -72,3 +72,5 @@ for _, v in ipairs(all_coords_in) do
     assert(test_touch_mouse(client.get()[s]), v[1])
     s = s + 1
 end
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/awful/placement/right.lua b/tests/examples/awful/placement/right.lua
index 4e16cea6c..0aa7ad480 100644
--- a/tests/examples/awful/placement/right.lua
+++ b/tests/examples/awful/placement/right.lua
@@ -14,3 +14,5 @@ awful.placement.right(client.focus)
 assert(c.x == screen[1].geometry.width-40-2*c.border_width) --DOC_HIDE
 assert( c.y==screen[1].geometry.height/2-30/2-c.border_width)--DOC_HIDE
 assert( c.width==40 and c.height==30)--DOC_HIDE
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/awful/placement/stretch.lua b/tests/examples/awful/placement/stretch.lua
index fca27952d..c80e0bd14 100644
--- a/tests/examples/awful/placement/stretch.lua
+++ b/tests/examples/awful/placement/stretch.lua
@@ -14,3 +14,5 @@ local c1 = client.gen_fake {--DOC_HIDE
 
     placement.stretch(c1, {direction=pos})
 end
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/awful/placement/stretch_down.lua b/tests/examples/awful/placement/stretch_down.lua
index 76a56f7db..5f2b510e4 100644
--- a/tests/examples/awful/placement/stretch_down.lua
+++ b/tests/examples/awful/placement/stretch_down.lua
@@ -16,3 +16,5 @@ assert(c.y==35) --DOC_HIDE
 assert(c.width == 40) --DOC_HIDE
 assert(c.y+c.height+2*c.border_width == --DOC_HIDE
        screen[1].geometry.y + screen[1].geometry.height) --DOC_HIDE
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/awful/placement/stretch_left.lua b/tests/examples/awful/placement/stretch_left.lua
index 06a8731d7..5de1bee69 100644
--- a/tests/examples/awful/placement/stretch_left.lua
+++ b/tests/examples/awful/placement/stretch_left.lua
@@ -12,3 +12,5 @@ local c = client.gen_fake {x = 45, y = 35, width=40, height=30} --DOC_HIDE
 placement.stretch_left(client.focus)
 
 assert(c.x == 0 and c.y == 35 and c.height == 30) --DOC_HIDE
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/awful/placement/stretch_right.lua b/tests/examples/awful/placement/stretch_right.lua
index 47dcce807..e8046d47f 100644
--- a/tests/examples/awful/placement/stretch_right.lua
+++ b/tests/examples/awful/placement/stretch_right.lua
@@ -13,3 +13,5 @@ placement.stretch_right(client.focus)
 
 local right = screen[1].geometry.x + screen[1].geometry.width --DOC_HIDE
 assert(c.height == 30 and c.x == 45 and c.x+c.width+2*c.border_width == right) --DOC_HIDE
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/awful/placement/stretch_up.lua b/tests/examples/awful/placement/stretch_up.lua
index 6f8101c22..455909ae9 100644
--- a/tests/examples/awful/placement/stretch_up.lua
+++ b/tests/examples/awful/placement/stretch_up.lua
@@ -15,3 +15,5 @@ assert(c.y==0) --DOC_HIDE
 assert(c.x==45) --DOC_HIDE
 assert(c.width == 40) --DOC_HIDE
 assert(c.height-2*c.border_width == 35+30) --DOC_HIDE
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/awful/placement/top.lua b/tests/examples/awful/placement/top.lua
index b3375fbcb..30e8535d8 100644
--- a/tests/examples/awful/placement/top.lua
+++ b/tests/examples/awful/placement/top.lua
@@ -15,3 +15,5 @@ assert(c.x == screen[1].geometry.width/2-40/2-c.border_width)
 assert(c.y==0) --DOC_HIDE
 assert( c.width==40) --DOC_HIDE
 assert(c.height==30)--DOC_HIDE
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/awful/placement/top_left.lua b/tests/examples/awful/placement/top_left.lua
index f70b85f60..aa56268ab 100644
--- a/tests/examples/awful/placement/top_left.lua
+++ b/tests/examples/awful/placement/top_left.lua
@@ -12,3 +12,5 @@ local c = client.gen_fake {x = 45, y = 35, width=40, height=30} --DOC_HIDE
 awful.placement.top_left(client.focus)
 
 assert(c.x == 0 and c.y==0 and c.width==40 and c.height==30)--DOC_HIDE
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/awful/placement/top_right.lua b/tests/examples/awful/placement/top_right.lua
index 2ef1634c7..a8599a307 100644
--- a/tests/examples/awful/placement/top_right.lua
+++ b/tests/examples/awful/placement/top_right.lua
@@ -13,3 +13,5 @@ awful.placement.top_right(client.focus)
 
 assert(c.x == screen[1].geometry.width-40-2*c.border_width and c.y==0 --DOC_HIDE
        and c.width==40 and c.height==30)--DOC_HIDE
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/awful/placement/under_mouse.lua b/tests/examples/awful/placement/under_mouse.lua
index adcb2b805..9b910f119 100644
--- a/tests/examples/awful/placement/under_mouse.lua
+++ b/tests/examples/awful/placement/under_mouse.lua
@@ -9,3 +9,5 @@ awful.placement.under_mouse(client.focus)
 
 assert(client.focus.x + client.focus.width /2 - mouse.coords().x <= 1) --DOC_HIDE
 assert(client.focus.y + client.focus.height/2 - mouse.coords().y <= 1) --DOC_HIDE
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/awful/template.lua b/tests/examples/awful/template.lua
index 5f810e2c9..9e45fa484 100644
--- a/tests/examples/awful/template.lua
+++ b/tests/examples/awful/template.lua
@@ -136,3 +136,5 @@ for _, h in ipairs(mouse.old_histories) do
 end
 
 img:finish()
+
+-- vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/gears/shape/arc.lua b/tests/examples/gears/shape/arc.lua
index 088fb8d15..3aaddd648 100644
--- a/tests/examples/gears/shape/arc.lua
+++ b/tests/examples/gears/shape/arc.lua
@@ -8,3 +8,5 @@ show(cr) --DOC_HIDE
 
 shape.arc(cr,70,70, nil, 0, 2*math.pi)
 show(cr) --DOC_HIDE
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/gears/shape/arrow.lua b/tests/examples/gears/shape/arrow.lua
index 981608da5..3e1a2d248 100644
--- a/tests/examples/gears/shape/arrow.lua
+++ b/tests/examples/gears/shape/arrow.lua
@@ -8,3 +8,5 @@ show(cr) --DOC_HIDE
 
 shape.transform(shape.arrow) : rotate_at(35,35,math.pi/2)(cr,70,70)
 show(cr) --DOC_HIDE
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/gears/shape/circle.lua b/tests/examples/gears/shape/circle.lua
index 0cb1b9fcd..d01ae82ac 100644
--- a/tests/examples/gears/shape/circle.lua
+++ b/tests/examples/gears/shape/circle.lua
@@ -8,3 +8,5 @@ show(cr) --DOC_HIDE
 
 shape.transform(shape.circle) : scale(0.5, 1)(cr,70,70)
 show(cr) --DOC_HIDE
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/gears/shape/cross.lua b/tests/examples/gears/shape/cross.lua
index 08c692e66..1dc9024b4 100644
--- a/tests/examples/gears/shape/cross.lua
+++ b/tests/examples/gears/shape/cross.lua
@@ -8,3 +8,5 @@ show(cr) --DOC_HIDE
 
 shape.transform(shape.cross) : scale(0.5, 1)(cr,70,70)
 show(cr) --DOC_HIDE
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/gears/shape/hexagon.lua b/tests/examples/gears/shape/hexagon.lua
index d08beacb4..8d5155eb3 100644
--- a/tests/examples/gears/shape/hexagon.lua
+++ b/tests/examples/gears/shape/hexagon.lua
@@ -8,3 +8,5 @@ show(cr) --DOC_HIDE
 
 shape.transform(shape.hexagon) : rotate_at(35,35,math.pi/2)(cr,70,40)
 show(cr) --DOC_HIDE
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/gears/shape/infobubble.lua b/tests/examples/gears/shape/infobubble.lua
index 5612eb64a..ad3d30dda 100644
--- a/tests/examples/gears/shape/infobubble.lua
+++ b/tests/examples/gears/shape/infobubble.lua
@@ -10,3 +10,5 @@ show(cr) --DOC_HIDE
 shape.transform(shape.infobubble)
 : rotate_at(35,35,3*math.pi/2) (cr,70,70, nil, nil, 40)
 show(cr) --DOC_HIDE
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/gears/shape/isosceles_triangle.lua b/tests/examples/gears/shape/isosceles_triangle.lua
index e20c5b8cf..59fe72127 100644
--- a/tests/examples/gears/shape/isosceles_triangle.lua
+++ b/tests/examples/gears/shape/isosceles_triangle.lua
@@ -8,3 +8,5 @@ show(cr) --DOC_HIDE
 
 shape.transform(shape.isosceles_triangle) : rotate_at(35, 35, math.pi/2)(cr,70,70)
 show(cr) --DOC_HIDE
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/gears/shape/losange.lua b/tests/examples/gears/shape/losange.lua
index 61b115c6a..babf8a36e 100644
--- a/tests/examples/gears/shape/losange.lua
+++ b/tests/examples/gears/shape/losange.lua
@@ -8,3 +8,5 @@ show(cr) --DOC_HIDE
 
 shape.transform(shape.losange) : scale(0.5, 1)(cr,70,70)
 show(cr) --DOC_HIDE
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/gears/shape/octogon.lua b/tests/examples/gears/shape/octogon.lua
index 083cc7d89..fbf75b233 100644
--- a/tests/examples/gears/shape/octogon.lua
+++ b/tests/examples/gears/shape/octogon.lua
@@ -8,3 +8,5 @@ show(cr) --DOC_HIDE
 
 shape.transform(shape.octogon) : translate(0, 25) (cr,70,20)
 show(cr) --DOC_HIDE
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/gears/shape/parallelogram.lua b/tests/examples/gears/shape/parallelogram.lua
index 1ba1c22fe..81ce53728 100644
--- a/tests/examples/gears/shape/parallelogram.lua
+++ b/tests/examples/gears/shape/parallelogram.lua
@@ -8,3 +8,5 @@ show(cr) --DOC_HIDE
 
 shape.transform(shape.parallelogram) : scale(0.5, 1)(cr,70,70)
 show(cr) --DOC_HIDE
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/gears/shape/partially_rounded_rect.lua b/tests/examples/gears/shape/partially_rounded_rect.lua
index 18734a2aa..0cf7a61aa 100644
--- a/tests/examples/gears/shape/partially_rounded_rect.lua
+++ b/tests/examples/gears/shape/partially_rounded_rect.lua
@@ -8,3 +8,5 @@ show(cr) --DOC_HIDE
 
 shape.partially_rounded_rect(cr, 70, 70, true, true, false, true, 30)
 show(cr) --DOC_HIDE
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/gears/shape/pie.lua b/tests/examples/gears/shape/pie.lua
index 60bead347..638ed056a 100644
--- a/tests/examples/gears/shape/pie.lua
+++ b/tests/examples/gears/shape/pie.lua
@@ -8,3 +8,5 @@ show(cr) --DOC_HIDE
 
 shape.pie(cr,70,70, 0, 2*math.pi, 10)
 show(cr) --DOC_HIDE
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/gears/shape/powerline.lua b/tests/examples/gears/shape/powerline.lua
index dcaa9508d..e43e5887c 100644
--- a/tests/examples/gears/shape/powerline.lua
+++ b/tests/examples/gears/shape/powerline.lua
@@ -8,3 +8,5 @@ show(cr) --DOC_HIDE
 
 shape.transform(shape.powerline) : translate(0, 25) (cr,70,20, -20)
 show(cr) --DOC_HIDE
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/gears/shape/radial_progress.lua b/tests/examples/gears/shape/radial_progress.lua
index 56ff74c26..ba6d8666f 100644
--- a/tests/examples/gears/shape/radial_progress.lua
+++ b/tests/examples/gears/shape/radial_progress.lua
@@ -8,3 +8,5 @@ show(cr, true) --DOC_HIDE
 
 shape.radial_progress(cr, 70, 20, .9)
 show(cr, true) --DOC_HIDE
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/gears/shape/rectangle.lua b/tests/examples/gears/shape/rectangle.lua
index 92be78d24..a03255f8e 100644
--- a/tests/examples/gears/shape/rectangle.lua
+++ b/tests/examples/gears/shape/rectangle.lua
@@ -8,3 +8,5 @@ show(cr) --DOC_HIDE
 
 shape.transform(shape.rectangle) : scale(0.5, 1)(cr,70,70)
 show(cr) --DOC_HIDE
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/gears/shape/rectangular_tag.lua b/tests/examples/gears/shape/rectangular_tag.lua
index b1444ffdd..cf7e45a41 100644
--- a/tests/examples/gears/shape/rectangular_tag.lua
+++ b/tests/examples/gears/shape/rectangular_tag.lua
@@ -11,3 +11,5 @@ show(cr) --DOC_HIDE
 
 shape.transform(shape.rectangular_tag) : translate(0, 30) (cr, 70, 10, -10)
 show(cr) --DOC_HIDE
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/gears/shape/rounded_bar.lua b/tests/examples/gears/shape/rounded_bar.lua
index 6c874865d..5f9299635 100644
--- a/tests/examples/gears/shape/rounded_bar.lua
+++ b/tests/examples/gears/shape/rounded_bar.lua
@@ -8,3 +8,5 @@ show(cr) --DOC_HIDE
 
 shape.rounded_bar(cr, 70, 20)
 show(cr) --DOC_HIDE
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/gears/shape/rounded_rect.lua b/tests/examples/gears/shape/rounded_rect.lua
index d8cfada8e..642ce08f0 100644
--- a/tests/examples/gears/shape/rounded_rect.lua
+++ b/tests/examples/gears/shape/rounded_rect.lua
@@ -8,3 +8,5 @@ show(cr) --DOC_HIDE
 
 shape.transform(shape.rounded_rect) : translate(0,25) (cr,70,20, 5)
 show(cr) --DOC_HIDE
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/shims/button.lua b/tests/examples/shims/button.lua
index be0e3ecdd..fb5e995af 100644
--- a/tests/examples/shims/button.lua
+++ b/tests/examples/shims/button.lua
@@ -2,3 +2,5 @@ return function() return {
     data = {},
     connect_signal = function() end
 } end
+
+-- vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/shims/drawin.lua b/tests/examples/shims/drawin.lua
index e96ebd6de..ed06e2e67 100644
--- a/tests/examples/shims/drawin.lua
+++ b/tests/examples/shims/drawin.lua
@@ -21,4 +21,3 @@ return setmetatable(drawin, {
                 })
 
 -- vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
-
diff --git a/tests/examples/shims/screen.lua b/tests/examples/shims/screen.lua
index 1e487e373..fef1af192 100644
--- a/tests/examples/shims/screen.lua
+++ b/tests/examples/shims/screen.lua
@@ -99,4 +99,3 @@ screen._add_screen {width=320, height=240}
 return screen
 
 -- vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
-
diff --git a/tests/examples/shims/tag.lua b/tests/examples/shims/tag.lua
index cb1b1f4ca..f445f485b 100644
--- a/tests/examples/shims/tag.lua
+++ b/tests/examples/shims/tag.lua
@@ -34,4 +34,3 @@ return setmetatable(tag, {
                 })
 
 -- vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
-
diff --git a/tests/examples/text/gears/object/properties.lua b/tests/examples/text/gears/object/properties.lua
index 97690967c..3e8994a51 100644
--- a/tests/examples/text/gears/object/properties.lua
+++ b/tests/examples/text/gears/object/properties.lua
@@ -51,3 +51,5 @@ print(o.something)
 o.something = "a cow"
 
 print(o.something)
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/text/gears/object/signal.lua b/tests/examples/text/gears/object/signal.lua
index 2a67b3783..e21bdb315 100644
--- a/tests/examples/text/gears/object/signal.lua
+++ b/tests/examples/text/gears/object/signal.lua
@@ -22,3 +22,5 @@ o:disconnect_signal("my_signal", slot)
 
 -- This time, the `slot` wont be called as it is no longer connected.
 o:emit_signal "my_signal"
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/text/template.lua b/tests/examples/text/template.lua
index 948f3a14d..4368a41ce 100644
--- a/tests/examples/text/template.lua
+++ b/tests/examples/text/template.lua
@@ -3,3 +3,5 @@ require("_common_template")(...)
 
 -- Execute the test
 loadfile(file_path)()
+
+-- vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/wibox/container/arcchart/bg.lua b/tests/examples/wibox/container/arcchart/bg.lua
index 686c394ba..36d4c6241 100644
--- a/tests/examples/wibox/container/arcchart/bg.lua
+++ b/tests/examples/wibox/container/arcchart/bg.lua
@@ -36,3 +36,5 @@ for _, v in ipairs {"", "#00ff00", "#0000ff"} do
 end
 
 return nil, 60
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/wibox/container/arcchart/border_width.lua b/tests/examples/wibox/container/arcchart/border_width.lua
index c74a51195..10f2fd5be 100644
--- a/tests/examples/wibox/container/arcchart/border_width.lua
+++ b/tests/examples/wibox/container/arcchart/border_width.lua
@@ -46,3 +46,5 @@ for _, v in ipairs {0,1,3,6.5} do
 end
 
 return nil, 60
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/wibox/container/arcchart/paddings.lua b/tests/examples/wibox/container/arcchart/paddings.lua
index f427797ba..3c8bf4190 100644
--- a/tests/examples/wibox/container/arcchart/paddings.lua
+++ b/tests/examples/wibox/container/arcchart/paddings.lua
@@ -77,3 +77,5 @@ l:add(wibox.widget {
   })
 
 return nil, 60
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/wibox/container/arcchart/rounded_edge.lua b/tests/examples/wibox/container/arcchart/rounded_edge.lua
index fabeb0bc9..86f01ab04 100644
--- a/tests/examples/wibox/container/arcchart/rounded_edge.lua
+++ b/tests/examples/wibox/container/arcchart/rounded_edge.lua
@@ -79,3 +79,5 @@ parent:add(wibox.widget {
        })
 
 return 500, 60
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/wibox/container/arcchart/start_angle.lua b/tests/examples/wibox/container/arcchart/start_angle.lua
index baa8612ea..71fbfc3f5 100644
--- a/tests/examples/wibox/container/arcchart/start_angle.lua
+++ b/tests/examples/wibox/container/arcchart/start_angle.lua
@@ -33,3 +33,5 @@ for _, v in ipairs {0, math.pi/2, math.pi} do
 end
 
 return nil, 60
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/wibox/container/arcchart/thickness.lua b/tests/examples/wibox/container/arcchart/thickness.lua
index ab431de35..428096e57 100644
--- a/tests/examples/wibox/container/arcchart/thickness.lua
+++ b/tests/examples/wibox/container/arcchart/thickness.lua
@@ -37,3 +37,5 @@ for _, v in ipairs {1,3,7,10} do
 end
 
 return nil, 60
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/wibox/container/arcchart/value.lua b/tests/examples/wibox/container/arcchart/value.lua
index 048007976..ba5dfd427 100644
--- a/tests/examples/wibox/container/arcchart/value.lua
+++ b/tests/examples/wibox/container/arcchart/value.lua
@@ -26,3 +26,5 @@ for _, v in ipairs {0,1,7,99} do
 end
 
 return nil, 60
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/wibox/container/background/bg.lua b/tests/examples/wibox/container/background/bg.lua
index 4bfef12ac..83cc20d2e 100644
--- a/tests/examples/wibox/container/background/bg.lua
+++ b/tests/examples/wibox/container/background/bg.lua
@@ -25,3 +25,5 @@ parent : setup {
     spacing = 10,
     layout  = wibox.layout.fixed.vertical
 }
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/wibox/container/background/clip.lua b/tests/examples/wibox/container/background/clip.lua
index 8184f8668..93fab52b6 100644
--- a/tests/examples/wibox/container/background/clip.lua
+++ b/tests/examples/wibox/container/background/clip.lua
@@ -30,3 +30,5 @@ parent : setup {
     spacing = 10,
     layout  = wibox.layout.fixed.vertical
 }
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/wibox/container/background/fg.lua b/tests/examples/wibox/container/background/fg.lua
index 30e958a41..15d58a49b 100644
--- a/tests/examples/wibox/container/background/fg.lua
+++ b/tests/examples/wibox/container/background/fg.lua
@@ -25,3 +25,5 @@ parent : setup {
     spacing = 10,
     layout  = wibox.layout.fixed.vertical
 }
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/wibox/container/background/shape.lua b/tests/examples/wibox/container/background/shape.lua
index 139bb1ca1..e912f965d 100644
--- a/tests/examples/wibox/container/background/shape.lua
+++ b/tests/examples/wibox/container/background/shape.lua
@@ -38,3 +38,5 @@ parent : setup {
     spacing = 10,
     layout  = wibox.layout.fixed.vertical
 }
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/wibox/container/defaults/arcchart.lua b/tests/examples/wibox/container/defaults/arcchart.lua
index 284900a64..be3f63762 100644
--- a/tests/examples/wibox/container/defaults/arcchart.lua
+++ b/tests/examples/wibox/container/defaults/arcchart.lua
@@ -43,3 +43,5 @@ return {
     },
     layout = wibox.container.margin
 }
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/wibox/container/defaults/background.lua b/tests/examples/wibox/container/defaults/background.lua
index 0ce041416..7296560b5 100644
--- a/tests/examples/wibox/container/defaults/background.lua
+++ b/tests/examples/wibox/container/defaults/background.lua
@@ -22,3 +22,5 @@ return {
     bg                 = beautiful.bg_highlight,
     widget             = wibox.container.background
 }
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/wibox/container/defaults/constraint.lua b/tests/examples/wibox/container/defaults/constraint.lua
index 1d4fcb88c..91383e57d 100644
--- a/tests/examples/wibox/container/defaults/constraint.lua
+++ b/tests/examples/wibox/container/defaults/constraint.lua
@@ -25,3 +25,5 @@ return {
     },
     layout = wibox.layout.fixed.vertical,
 }
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/wibox/container/defaults/margin.lua b/tests/examples/wibox/container/defaults/margin.lua
index 49505b07a..89cf5207f 100644
--- a/tests/examples/wibox/container/defaults/margin.lua
+++ b/tests/examples/wibox/container/defaults/margin.lua
@@ -52,3 +52,5 @@ return {
     expand = "none",
     layout = wibox.layout.align.vertical,
 }
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/wibox/container/defaults/mirror.lua b/tests/examples/wibox/container/defaults/mirror.lua
index e216c9b46..99cb78aca 100644
--- a/tests/examples/wibox/container/defaults/mirror.lua
+++ b/tests/examples/wibox/container/defaults/mirror.lua
@@ -17,3 +17,5 @@ return {
     reflection = {horizontal = true},
     widget     = wibox.container.mirror
 }
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/wibox/container/defaults/radialprogressbar.lua b/tests/examples/wibox/container/defaults/radialprogressbar.lua
index 5ae4190e7..602f0fac2 100644
--- a/tests/examples/wibox/container/defaults/radialprogressbar.lua
+++ b/tests/examples/wibox/container/defaults/radialprogressbar.lua
@@ -23,3 +23,5 @@ return {
     margins = 5,
     layout = wibox.container.margin
 }
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/wibox/container/defaults/rotate.lua b/tests/examples/wibox/container/defaults/rotate.lua
index 13cf1002d..61fc370cb 100644
--- a/tests/examples/wibox/container/defaults/rotate.lua
+++ b/tests/examples/wibox/container/defaults/rotate.lua
@@ -17,3 +17,5 @@ return {
     direction = "east",
     widget    = wibox.container.rotate
 }
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/wibox/container/defaults/template.lua b/tests/examples/wibox/container/defaults/template.lua
index e1fe7842c..6e7a45516 100644
--- a/tests/examples/wibox/container/defaults/template.lua
+++ b/tests/examples/wibox/container/defaults/template.lua
@@ -75,3 +75,4 @@ local f_w, f_h = container:fit({dpi=96}, 9999, 9999)
 local img = surface.widget_to_svg(container, image_path..".svg", f_w, f_h)
 img:finish()
 
+-- vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/wibox/container/radialprogressbar/border_color.lua b/tests/examples/wibox/container/radialprogressbar/border_color.lua
index 6885a7060..93b6ca902 100644
--- a/tests/examples/wibox/container/radialprogressbar/border_color.lua
+++ b/tests/examples/wibox/container/radialprogressbar/border_color.lua
@@ -24,3 +24,5 @@ local l = wibox.layout {
 }
 
 parent:add(l)
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/wibox/container/radialprogressbar/border_width.lua b/tests/examples/wibox/container/radialprogressbar/border_width.lua
index b13bddf7f..71222c772 100644
--- a/tests/examples/wibox/container/radialprogressbar/border_width.lua
+++ b/tests/examples/wibox/container/radialprogressbar/border_width.lua
@@ -27,3 +27,5 @@ local l = wibox.layout {
 }
 
 parent:add(l)
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/wibox/container/radialprogressbar/color.lua b/tests/examples/wibox/container/radialprogressbar/color.lua
index 7c097af5f..f7738f5ab 100644
--- a/tests/examples/wibox/container/radialprogressbar/color.lua
+++ b/tests/examples/wibox/container/radialprogressbar/color.lua
@@ -24,3 +24,5 @@ local l = wibox.layout {
 }
 
 parent:add(l)
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/wibox/container/radialprogressbar/padding.lua b/tests/examples/wibox/container/radialprogressbar/padding.lua
index 9e46370fa..6af415e01 100644
--- a/tests/examples/wibox/container/radialprogressbar/padding.lua
+++ b/tests/examples/wibox/container/radialprogressbar/padding.lua
@@ -31,3 +31,5 @@ local l = wibox.layout {
 }
 
 parent:add(l)
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/wibox/container/radialprogressbar/value.lua b/tests/examples/wibox/container/radialprogressbar/value.lua
index a3e7c9447..24c20aeff 100644
--- a/tests/examples/wibox/container/radialprogressbar/value.lua
+++ b/tests/examples/wibox/container/radialprogressbar/value.lua
@@ -26,3 +26,5 @@ local l = wibox.layout {
 }
 
 parent:add(l)
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/wibox/container/rotate/angle.lua b/tests/examples/wibox/container/rotate/angle.lua
index 0e5db3789..92807497e 100644
--- a/tests/examples/wibox/container/rotate/angle.lua
+++ b/tests/examples/wibox/container/rotate/angle.lua
@@ -60,3 +60,5 @@ parent : setup {                            --DOC_HIDE
     spacing = 10,                           --DOC_HIDE
     layout  = wibox.layout.fixed.horizontal --DOC_HIDE
 }                                           --DOC_HIDE
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/wibox/layout/defaults/align.lua b/tests/examples/wibox/layout/defaults/align.lua
index 236b5cac5..ee0e73efa 100644
--- a/tests/examples/wibox/layout/defaults/align.lua
+++ b/tests/examples/wibox/layout/defaults/align.lua
@@ -8,3 +8,5 @@ wibox.widget {
     generic_widget( "third"  ),
     layout  = wibox.layout.align.horizontal
 }
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/wibox/layout/defaults/fixed.lua b/tests/examples/wibox/layout/defaults/fixed.lua
index 0b6f1f825..28c1fc8fe 100644
--- a/tests/examples/wibox/layout/defaults/fixed.lua
+++ b/tests/examples/wibox/layout/defaults/fixed.lua
@@ -8,3 +8,5 @@ wibox.widget {
     generic_widget( "third"  ),
     layout  = wibox.layout.fixed.horizontal
 }
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/wibox/layout/defaults/flex.lua b/tests/examples/wibox/layout/defaults/flex.lua
index 81d59cd53..14bbd4b4a 100644
--- a/tests/examples/wibox/layout/defaults/flex.lua
+++ b/tests/examples/wibox/layout/defaults/flex.lua
@@ -8,3 +8,5 @@ wibox.widget {
     generic_widget( "third"  ),
     layout  = wibox.layout.flex.horizontal
 }
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/wibox/layout/defaults/ratio.lua b/tests/examples/wibox/layout/defaults/ratio.lua
index 397d74905..466747000 100644
--- a/tests/examples/wibox/layout/defaults/ratio.lua
+++ b/tests/examples/wibox/layout/defaults/ratio.lua
@@ -11,3 +11,5 @@ local w = wibox.widget {
 w:ajust_ratio(2, 0.44, 0.33, 0.22)
 
 return w --DOC_HIDE
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/wibox/layout/defaults/stack.lua b/tests/examples/wibox/layout/defaults/stack.lua
index 828874825..5ccca04f4 100644
--- a/tests/examples/wibox/layout/defaults/stack.lua
+++ b/tests/examples/wibox/layout/defaults/stack.lua
@@ -8,3 +8,5 @@ wibox.widget {
     generic_widget( "third"  ),
     layout  = wibox.layout.stack
 }
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/wibox/layout/template.lua b/tests/examples/wibox/layout/template.lua
index bc162e77d..f399049cb 100644
--- a/tests/examples/wibox/layout/template.lua
+++ b/tests/examples/wibox/layout/template.lua
@@ -101,3 +101,5 @@ end
 -- Save to the output file
 local img = surface["widget_to_svg"](widget, image_path..".svg", w or 200, h or 30)
 img:finish()
+
+-- vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/wibox/logo/logo.lua b/tests/examples/wibox/logo/logo.lua
index 2a0688cc6..e9bf991a4 100644
--- a/tests/examples/wibox/logo/logo.lua
+++ b/tests/examples/wibox/logo/logo.lua
@@ -13,3 +13,5 @@ parent:add( --DOC_HIDE
            }
 
            ) --DOC_HIDE
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/wibox/logo/logo_and_name.lua b/tests/examples/wibox/logo/logo_and_name.lua
index fe1eb674a..2c2b13459 100644
--- a/tests/examples/wibox/logo/logo_and_name.lua
+++ b/tests/examples/wibox/logo/logo_and_name.lua
@@ -15,3 +15,5 @@ parent:add( --DOC_HIDE
            }
 
            ) --DOC_HIDE
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/wibox/template.lua b/tests/examples/wibox/template.lua
index 92402c1e9..656d22e51 100644
--- a/tests/examples/wibox/template.lua
+++ b/tests/examples/wibox/template.lua
@@ -27,3 +27,4 @@ f_w, f_h = f_w+10, f_h+10
 local img = surface["widget_to_"..image_type](container, image_path.."."..image_type, w or f_w, h or f_h)
 img:finish()
 
+-- vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/wibox/widget/checkbox/bg.lua b/tests/examples/wibox/widget/checkbox/bg.lua
index 8410223db..151b525d8 100644
--- a/tests/examples/wibox/widget/checkbox/bg.lua
+++ b/tests/examples/wibox/widget/checkbox/bg.lua
@@ -18,3 +18,5 @@ parent:add( --DOC_HIDE
                widget             = wibox.widget.checkbox
            }
            ) --DOC_HIDE
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/wibox/widget/checkbox/check_shape.lua b/tests/examples/wibox/widget/checkbox/check_shape.lua
index a0be1267a..11fe7df4c 100644
--- a/tests/examples/wibox/widget/checkbox/check_shape.lua
+++ b/tests/examples/wibox/widget/checkbox/check_shape.lua
@@ -25,3 +25,5 @@ for _, s in ipairs {"rectangle", "circle", "losange", "octogon"} do
 end
 
 parent:add(l) --DOC_HIDE
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/wibox/widget/checkbox/custom.lua b/tests/examples/wibox/widget/checkbox/custom.lua
index 4f0531af9..e8ce550e4 100644
--- a/tests/examples/wibox/widget/checkbox/custom.lua
+++ b/tests/examples/wibox/widget/checkbox/custom.lua
@@ -31,3 +31,5 @@ parent:add( --DOC_HIDE
                widget             = wibox.widget.checkbox
            }
            ) --DOC_HIDE
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/wibox/widget/checkbox/shape.lua b/tests/examples/wibox/widget/checkbox/shape.lua
index 096549882..c13ebf13e 100644
--- a/tests/examples/wibox/widget/checkbox/shape.lua
+++ b/tests/examples/wibox/widget/checkbox/shape.lua
@@ -25,3 +25,5 @@ for _, s in ipairs {"rectangle", "circle", "losange", "octogon"} do
 end
 
 parent:add(l) --DOC_HIDE
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/wibox/widget/defaults/checkbox.lua b/tests/examples/wibox/widget/defaults/checkbox.lua
index c18e641b8..440f6fbf2 100644
--- a/tests/examples/wibox/widget/defaults/checkbox.lua
+++ b/tests/examples/wibox/widget/defaults/checkbox.lua
@@ -29,3 +29,5 @@ parent:add( --DOC_HIDE
            } --DOC_HIDE
 
            ) --DOC_HIDE
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/wibox/widget/defaults/graph.lua b/tests/examples/wibox/widget/defaults/graph.lua
index 6ccd93b5a..0a2057058 100644
--- a/tests/examples/wibox/widget/defaults/graph.lua
+++ b/tests/examples/wibox/widget/defaults/graph.lua
@@ -20,3 +20,5 @@ parent:add( w ) --DOC_HIDE
 for _, v in ipairs(data) do --DOC_HIDE
     w:add_value(v) --DOC_HIDE
 end --DOC_HIDE
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/wibox/widget/defaults/imagebox.lua b/tests/examples/wibox/widget/defaults/imagebox.lua
index 13d5ef041..8e433fdc3 100644
--- a/tests/examples/wibox/widget/defaults/imagebox.lua
+++ b/tests/examples/wibox/widget/defaults/imagebox.lua
@@ -11,3 +11,5 @@ parent:add( --DOC_HIDE
            }
 
            ) --DOC_HIDE
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/wibox/widget/defaults/piechart.lua b/tests/examples/wibox/widget/defaults/piechart.lua
index 293b1ded6..0101e828c 100644
--- a/tests/examples/wibox/widget/defaults/piechart.lua
+++ b/tests/examples/wibox/widget/defaults/piechart.lua
@@ -22,3 +22,5 @@ parent:add( --DOC_HIDE
            }
 
            ) --DOC_HIDE
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/wibox/widget/defaults/progressbar.lua b/tests/examples/wibox/widget/defaults/progressbar.lua
index 0f90b62cb..6f3915e2e 100644
--- a/tests/examples/wibox/widget/defaults/progressbar.lua
+++ b/tests/examples/wibox/widget/defaults/progressbar.lua
@@ -17,3 +17,5 @@ parent:add( --DOC_HIDE
            }
 
            ) --DOC_HIDE
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/wibox/widget/defaults/slider.lua b/tests/examples/wibox/widget/defaults/slider.lua
index 2dfc1e08f..519f288f0 100644
--- a/tests/examples/wibox/widget/defaults/slider.lua
+++ b/tests/examples/wibox/widget/defaults/slider.lua
@@ -20,3 +20,5 @@ parent:add( --DOC_HIDE
            }
 
            ) --DOC_HIDE
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/wibox/widget/defaults/textbox.lua b/tests/examples/wibox/widget/defaults/textbox.lua
index 3997a99ff..ddf7c679b 100644
--- a/tests/examples/wibox/widget/defaults/textbox.lua
+++ b/tests/examples/wibox/widget/defaults/textbox.lua
@@ -11,3 +11,5 @@ parent:add( --DOC_HIDE
            }
 
            ) --DOC_HIDE
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/wibox/widget/graph/step.lua b/tests/examples/wibox/widget/graph/step.lua
index 9b5d02106..bc3603e95 100644
--- a/tests/examples/wibox/widget/graph/step.lua
+++ b/tests/examples/wibox/widget/graph/step.lua
@@ -26,3 +26,5 @@ parent:add( w ) --DOC_HIDE
 for _, v in ipairs(data) do --DOC_HIDE
     w:add_value(v) --DOC_HIDE
 end --DOC_HIDE
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/wibox/widget/piechart/border_color.lua b/tests/examples/wibox/widget/piechart/border_color.lua
index 43b1b10b6..4bbbf9e9d 100644
--- a/tests/examples/wibox/widget/piechart/border_color.lua
+++ b/tests/examples/wibox/widget/piechart/border_color.lua
@@ -25,3 +25,5 @@ for _, v in ipairs {"#ff0000", "#00ff00", "#0000ff"} do
           widget = wibox.widget.piechart
       })
 end
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/wibox/widget/piechart/border_width.lua b/tests/examples/wibox/widget/piechart/border_width.lua
index a8c4430b9..40cb8deea 100644
--- a/tests/examples/wibox/widget/piechart/border_width.lua
+++ b/tests/examples/wibox/widget/piechart/border_width.lua
@@ -24,3 +24,5 @@ for _, v in ipairs {0,1,3,5} do
           widget = wibox.widget.piechart
       })
 end
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/wibox/widget/piechart/label.lua b/tests/examples/wibox/widget/piechart/label.lua
index b9852807e..a994281bc 100644
--- a/tests/examples/wibox/widget/piechart/label.lua
+++ b/tests/examples/wibox/widget/piechart/label.lua
@@ -66,3 +66,5 @@ parent:add(wibox.widget {
        })
 
 return 500, 60
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/wibox/widget/progressbar/bar_shape.lua b/tests/examples/wibox/widget/progressbar/bar_shape.lua
index 47d5717cd..4d5d9e933 100644
--- a/tests/examples/wibox/widget/progressbar/bar_shape.lua
+++ b/tests/examples/wibox/widget/progressbar/bar_shape.lua
@@ -25,3 +25,5 @@ for _, shape in ipairs {"rounded_bar", "octogon", "hexagon", "powerline" } do
 end
 
 parent:add(l) --DOC_HIDE
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/wibox/widget/progressbar/clip.lua b/tests/examples/wibox/widget/progressbar/clip.lua
index 695d87f9c..44dea3cc0 100644
--- a/tests/examples/wibox/widget/progressbar/clip.lua
+++ b/tests/examples/wibox/widget/progressbar/clip.lua
@@ -25,3 +25,5 @@ parent:add( --DOC_HIDE
            }
 
            ) --DOC_HIDE
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/wibox/widget/progressbar/shape.lua b/tests/examples/wibox/widget/progressbar/shape.lua
index d53c950a6..bcaec4d07 100644
--- a/tests/examples/wibox/widget/progressbar/shape.lua
+++ b/tests/examples/wibox/widget/progressbar/shape.lua
@@ -22,3 +22,5 @@ for _, shape in ipairs {"rounded_bar", "octogon", "hexagon", "powerline" } do
 end
 
 parent:add(l) --DOC_HIDE
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/wibox/widget/progressbar/text.lua b/tests/examples/wibox/widget/progressbar/text.lua
index d854a4b1d..f4ac6a587 100644
--- a/tests/examples/wibox/widget/progressbar/text.lua
+++ b/tests/examples/wibox/widget/progressbar/text.lua
@@ -23,3 +23,5 @@ parent:add( --DOC_HIDE
            }
 
            ) --DOC_HIDE
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/wibox/widget/progressbar/vertical.lua b/tests/examples/wibox/widget/progressbar/vertical.lua
index ae1844194..d0bc37510 100644
--- a/tests/examples/wibox/widget/progressbar/vertical.lua
+++ b/tests/examples/wibox/widget/progressbar/vertical.lua
@@ -16,3 +16,5 @@ parent:add( --DOC_HIDE
            }
 
            ) --DOC_HIDE
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/wibox/widget/slider/bar_border.lua b/tests/examples/wibox/widget/slider/bar_border.lua
index f7f0d7b87..4d201aacd 100644
--- a/tests/examples/wibox/widget/slider/bar_border.lua
+++ b/tests/examples/wibox/widget/slider/bar_border.lua
@@ -24,3 +24,5 @@ local l = wibox.layout {
 }
 
 parent:add(l)
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/wibox/widget/slider/bar_color.lua b/tests/examples/wibox/widget/slider/bar_color.lua
index 5401e94a0..de3859809 100644
--- a/tests/examples/wibox/widget/slider/bar_color.lua
+++ b/tests/examples/wibox/widget/slider/bar_color.lua
@@ -24,3 +24,5 @@ local l = wibox.layout {
 }
 
 parent:add(l)
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/wibox/widget/slider/bar_height.lua b/tests/examples/wibox/widget/slider/bar_height.lua
index 2d94f0643..58fad90ad 100644
--- a/tests/examples/wibox/widget/slider/bar_height.lua
+++ b/tests/examples/wibox/widget/slider/bar_height.lua
@@ -24,3 +24,5 @@ local l = wibox.layout {
 }
 
 parent:add(l)
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/wibox/widget/slider/bar_margins.lua b/tests/examples/wibox/widget/slider/bar_margins.lua
index d03f69101..9b4f4cebb 100644
--- a/tests/examples/wibox/widget/slider/bar_margins.lua
+++ b/tests/examples/wibox/widget/slider/bar_margins.lua
@@ -29,3 +29,5 @@ local l = wibox.layout {
 }
 
 parent:add(l)
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/wibox/widget/slider/bar_shape.lua b/tests/examples/wibox/widget/slider/bar_shape.lua
index d33dac7fd..f285e4255 100644
--- a/tests/examples/wibox/widget/slider/bar_shape.lua
+++ b/tests/examples/wibox/widget/slider/bar_shape.lua
@@ -26,3 +26,5 @@ local l = wibox.layout {
 }
 
 parent:add(l)
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/wibox/widget/slider/handle_border.lua b/tests/examples/wibox/widget/slider/handle_border.lua
index 2e4bf039b..4f20c3263 100644
--- a/tests/examples/wibox/widget/slider/handle_border.lua
+++ b/tests/examples/wibox/widget/slider/handle_border.lua
@@ -24,3 +24,5 @@ local l = wibox.layout {
 }
 
 parent:add(l)
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/wibox/widget/slider/handle_color.lua b/tests/examples/wibox/widget/slider/handle_color.lua
index 4af7fe2ba..ab9a88fbe 100644
--- a/tests/examples/wibox/widget/slider/handle_color.lua
+++ b/tests/examples/wibox/widget/slider/handle_color.lua
@@ -24,3 +24,5 @@ local l = wibox.layout {
 }
 
 parent:add(l)
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/wibox/widget/slider/handle_margins.lua b/tests/examples/wibox/widget/slider/handle_margins.lua
index 69be2289d..7e4e27629 100644
--- a/tests/examples/wibox/widget/slider/handle_margins.lua
+++ b/tests/examples/wibox/widget/slider/handle_margins.lua
@@ -29,3 +29,5 @@ local l = wibox.layout {
 }
 
 parent:add(l)
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/wibox/widget/slider/handle_shape.lua b/tests/examples/wibox/widget/slider/handle_shape.lua
index 18ba7acdd..7a21342b2 100644
--- a/tests/examples/wibox/widget/slider/handle_shape.lua
+++ b/tests/examples/wibox/widget/slider/handle_shape.lua
@@ -26,3 +26,5 @@ local l = wibox.layout {
 }
 
 parent:add(l)
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/wibox/widget/slider/handle_width.lua b/tests/examples/wibox/widget/slider/handle_width.lua
index ae61daa11..a74e8db53 100644
--- a/tests/examples/wibox/widget/slider/handle_width.lua
+++ b/tests/examples/wibox/widget/slider/handle_width.lua
@@ -25,3 +25,5 @@ local l = wibox.layout {
 }
 
 parent:add(l)
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
diff --git a/tests/examples/wibox/widget/slider/value.lua b/tests/examples/wibox/widget/slider/value.lua
index cce0b7295..801218d5d 100644
--- a/tests/examples/wibox/widget/slider/value.lua
+++ b/tests/examples/wibox/widget/slider/value.lua
@@ -25,3 +25,5 @@ local l = wibox.layout {
 }
 
 parent:add(l)
+
+--DOC_HIDE vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80