Add proper strikeout positioning

With this change the strikeout should make proper use of the metrics in
the OS2 table. These metrics are available for all TTF and OTF fonts. If
the metrics are not supplied, a fallback strikeout based on underline
thickness and cell height is used.

To go in line with the metrics supplied by the OS2 table, the term of
`strikethrough` has been replaced with `strikeout` everywhere. I think
it makes sense to go forward with using `strikeout` in general when
talking about this.

There has also been a small bug where the cell would not be
underlined/striked out when an underline is broken over multiple lines.
This has been fixed and the underline/strikeout should always be applied
to each cell with this flag.

Cargo.lock

@@ -14,18 +14,18 @@ dependencies = [
  "base64 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "bitflags 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "cgmath 0.16.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "clap 2.29.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "clap 2.30.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "clippy 0.0.184 (registry+https://github.com/rust-lang/crates.io-index)",
+ "clippy 0.0.186 (registry+https://github.com/rust-lang/crates.io-index)",
  "copypasta 0.0.1",
  "env_logger 0.5.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "errno 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "fnv 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "font 0.1.0",
  "gl_generator 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "glutin 0.12.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "glutin 0.12.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.36 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "mio 0.6.12 (registry+https://github.com/rust-lang/crates.io-index)",
+ "mio 0.6.13 (registry+https://github.com/rust-lang/crates.io-index)",
  "mio-more 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "notify 4.0.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "objc 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -148,7 +148,7 @@ name = "cgl"
 version = "0.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "gleam 0.4.20 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gleam 0.4.21 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.36 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -158,7 +158,7 @@ version = "0.16.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "approx 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "num-traits 0.1.42 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num-traits 0.1.43 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -167,19 +167,19 @@ name = "chrono"
 version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "num 0.1.41 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num 0.1.42 (registry+https://github.com/rust-lang/crates.io-index)",
  "time 0.1.39 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "clap"
-version = "2.29.2"
+version = "2.30.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "ansi_term 0.10.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "atty 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "bitflags 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "strsim 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "strsim 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "textwrap 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "unicode-width 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "vec_map 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -187,17 +187,17 @@ dependencies = [
 
 [[package]]
 name = "clippy"
-version = "0.0.184"
+version = "0.0.186"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cargo_metadata 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "clippy_lints 0.0.184 (registry+https://github.com/rust-lang/crates.io-index)",
+ "clippy_lints 0.0.186 (registry+https://github.com/rust-lang/crates.io-index)",
- "regex 0.2.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "regex 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "clippy_lints"
-version = "0.0.184"
+version = "0.0.186"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "if_chain 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -235,6 +235,18 @@ dependencies = [
  "objc 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "cocoa"
+version = "0.14.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "bitflags 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "block 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "core-graphics 0.13.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.36 (registry+https://github.com/rust-lang/crates.io-index)",
+ "objc 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "copypasta"
 version = "0.0.1"
@@ -302,7 +314,7 @@ dependencies = [
 
 [[package]]
 name = "core-text"
-version = "9.1.0"
+version = "9.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "core-foundation 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -324,15 +336,6 @@ name = "dtoa"
 version = "0.4.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
-[[package]]
-name = "dwmapi-sys"
-version = "0.1.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "winapi 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
- "winapi-build 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "either"
 version = "1.4.0"
@@ -346,8 +349,8 @@ dependencies = [
  "atty 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "chrono 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "regex 0.2.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "regex 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "termcolor 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "termcolor 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -365,7 +368,7 @@ name = "euclid"
 version = "0.16.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "num-traits 0.1.42 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num-traits 0.1.43 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.27 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -400,7 +403,7 @@ dependencies = [
  "core-foundation 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "core-foundation-sys 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "core-graphics 0.13.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "core-text 9.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "core-text 9.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "euclid 0.16.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "foreign-types 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "freetype-rs 0.13.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -474,15 +477,6 @@ name = "fuchsia-zircon-sys"
 version = "0.3.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
-[[package]]
-name = "gdi32-sys"
-version = "0.1.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "winapi 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
- "winapi-build 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "getopts"
 version = "0.2.17"
@@ -490,56 +484,51 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "gl_generator"
-version = "0.7.0"
+version = "0.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "khronos_api 2.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "khronos_api 2.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)",
  "xml-rs 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "gl_generator"
-version = "0.8.0"
+version = "0.9.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "khronos_api 2.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "khronos_api 2.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "xml-rs 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "gleam"
-version = "0.4.20"
+version = "0.4.21"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "gl_generator 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gl_generator 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "pkg-config 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "glutin"
-version = "0.12.0"
+version = "0.12.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "android_glue 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "cgl 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "cocoa 0.13.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cocoa 0.14.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "core-foundation 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "core-foundation 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "core-graphics 0.12.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "core-graphics 0.13.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "dwmapi-sys 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gl_generator 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "gdi32-sys 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "gl_generator 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "kernel32-sys 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.36 (registry+https://github.com/rust-lang/crates.io-index)",
  "objc 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "osmesa-sys 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "shared_library 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)",
- "shell32-sys 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "user32-sys 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "wayland-client 0.12.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "winapi 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "winit 0.10.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "x11-dl 2.17.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -600,7 +589,7 @@ dependencies = [
 
 [[package]]
 name = "khronos_api"
-version = "2.0.0"
+version = "2.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
@@ -713,7 +702,7 @@ dependencies = [
 
 [[package]]
 name = "mio"
-version = "0.6.12"
+version = "0.6.13"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "fuchsia-zircon 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -736,7 +725,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "lazycell 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)",
- "mio 0.6.12 (registry+https://github.com/rust-lang/crates.io-index)",
+ "mio 0.6.13 (registry+https://github.com/rust-lang/crates.io-index)",
  "slab 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -801,40 +790,48 @@ dependencies = [
  "kernel32-sys 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.36 (registry+https://github.com/rust-lang/crates.io-index)",
  "mio 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "walkdir 2.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "walkdir 2.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "num"
-version = "0.1.41"
+version = "0.1.42"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "num-integer 0.1.35 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num-integer 0.1.36 (registry+https://github.com/rust-lang/crates.io-index)",
- "num-iter 0.1.34 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num-iter 0.1.35 (registry+https://github.com/rust-lang/crates.io-index)",
- "num-traits 0.1.42 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num-traits 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "num-integer"
-version = "0.1.35"
+version = "0.1.36"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "num-traits 0.1.42 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num-traits 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "num-iter"
-version = "0.1.34"
+version = "0.1.35"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "num-integer 0.1.35 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num-integer 0.1.36 (registry+https://github.com/rust-lang/crates.io-index)",
- "num-traits 0.1.42 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num-traits 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "num-traits"
-version = "0.1.42"
+version = "0.1.43"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "num-traits 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "num-traits"
+version = "0.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
@@ -890,16 +887,16 @@ version = "0.5.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "owning_ref 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "parking_lot_core 0.2.10 (registry+https://github.com/rust-lang/crates.io-index)",
+ "parking_lot_core 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "parking_lot_core"
-version = "0.2.10"
+version = "0.2.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "libc 0.2.36 (registry+https://github.com/rust-lang/crates.io-index)",
- "rand 0.3.20 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rand 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "smallvec 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -935,11 +932,12 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "rand"
-version = "0.3.20"
+version = "0.3.22"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "fuchsia-zircon 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.36 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rand 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -967,7 +965,7 @@ dependencies = [
 
 [[package]]
 name = "regex"
-version = "0.2.5"
+version = "0.2.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "aho-corasick 0.6.4 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1042,7 +1040,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "dtoa 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "itoa 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "num-traits 0.1.42 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num-traits 0.1.43 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.27 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -1052,7 +1050,7 @@ version = "0.7.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "linked-hash-map 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "num-traits 0.1.42 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num-traits 0.1.43 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.27 (registry+https://github.com/rust-lang/crates.io-index)",
  "yaml-rust 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -1085,15 +1083,6 @@ dependencies = [
  "libc 0.2.36 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "shell32-sys"
-version = "0.1.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "winapi 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
- "winapi-build 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "slab"
 version = "0.1.3"
@@ -1116,7 +1105,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "strsim"
-version = "0.6.0"
+version = "0.7.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
@@ -1144,17 +1133,17 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "kernel32-sys 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.36 (registry+https://github.com/rust-lang/crates.io-index)",
- "rand 0.3.20 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rand 0.3.22 (registry+https://github.com/rust-lang/crates.io-index)",
  "redox_syscall 0.1.37 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "termcolor"
-version = "0.3.3"
+version = "0.3.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "wincolor 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "wincolor 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1248,15 +1237,6 @@ dependencies = [
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+"checksum serde_derive_internals 0.19.0 (registry+https://github.com/rust-lang/crates.io-index)" = "6e03f1c9530c3fb0a0a5c9b826bdd9246a5921ae995d75f512ac917fc4dd55b5"
+"checksum servo-fontconfig 0.4.0 (git+https://github.com/jwilm/rust-fontconfig?branch=updated-2017-10-8)" = "<none>"
+"checksum servo-fontconfig-sys 4.0.3 (git+https://github.com/jwilm/libfontconfig?branch=updated-2017-10-8)" = "<none>"
+"checksum syn 0.11.11 (registry+https://github.com/rust-lang/crates.io-index)" = "d3b891b9015c88c576343b9b3e41c2c11a51c219ef067b264bd9c8aa9b441dad"
+"checksum synom 0.11.3 (registry+https://github.com/rust-lang/crates.io-index)" = "a393066ed9010ebaed60b9eafa373d4b1baac186dd7e008555b0f702b51945b6"
+"checksum unicode-xid 0.0.4 (registry+https://github.com/rust-lang/crates.io-index)" = "8c1f860d7d29cf02cb2f3f359fd35991af3d30bac52c57d265a3c461074cb4dc"
+"checksum vcpkg 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "9e0a7d8bed3178a8fb112199d466eeca9ed09a14ba8ad67718179b4fd5487d0b"

font/src/ft/mod.rs

@@ -18,6 +18,7 @@ use std::cmp::min;
 use std::path::PathBuf;
 use std::fmt;
 
+use freetype::tt_os2::TrueTypeOS2Table;
 use freetype::{self, Library};
 use libc::c_uint;
 
@@ -103,12 +104,33 @@ impl ::Rasterize for FreeTypeRasterizer {
             .round()
             .max(1.);
 
+        // Get strikeout position and thickness in device pixels
+        let (strikeout_position, strikeout_thickness) =
+            match TrueTypeOS2Table::from_face(&mut face.ft_face.clone())
+        {
+            Some(os2) => {
+                let strikeout_position =
+                    (f32::from(os2.y_strikeout_position()) * x_scale / 64.).round();
+                let strikeout_thickness =
+                    (f32::from(os2.y_strikeout_size()) * x_scale / 64.).round();
+                (strikeout_position, strikeout_thickness)
+            },
+            _ => {
+                // Fallback if font doesn't provide info about strikeout
+                trace!("No strikeout data available for font, using fallback.");
+                let strikeout_position = height as f32 / 2. + descent;
+                (strikeout_position, underline_thickness)
+            },
+        };
+
         Ok(Metrics {
             average_advance: full.cell_width,
             line_height: height,
             descent: descent,
             underline_position,
             underline_thickness,
+            strikeout_position,
+            strikeout_thickness,
         })
     }
 

font/src/lib.rs

@@ -316,6 +316,8 @@ pub struct Metrics {
     pub descent: f32,
     pub underline_position: f32,
     pub underline_thickness: f32,
+    pub strikeout_position: f32,
+    pub strikeout_thickness: f32,
 }
 
 pub trait Rasterize {

src/display.rs

@@ -365,10 +365,10 @@ impl Display {
                         api.clear(background_color);
                     }
 
-                    // Store underline/strikethrough information beyond current cell
+                    // Store underline/strikeout information beyond current cell
                     let mut last_cell = None;
                     let mut start_underline: Option<RenderableCell> = None;
-                    let mut start_strikethrough: Option<RenderableCell> = None;
+                    let mut start_strikeout: Option<RenderableCell> = None;
 
                     // Iterate over all non-empty cells in the grid
                     for cell in terminal.renderable_cells(config, selection, window_focused) {
@@ -384,19 +384,19 @@ impl Display {
                             cell_line_rects.push(underline);
                         }
 
-                        // Check if there is a new strikethrough
+                        // Check if there is a new strikeout
-                        if let Some(strikethrough) = calculate_cell_line_state(
+                        if let Some(strikeout) = calculate_cell_line_state(
                             cell,
-                            &mut start_strikethrough,
+                            &mut start_strikeout,
                             &last_cell,
                             &metrics,
                             &size_info,
-                            cell::Flags::STRIKE_THROUGH,
+                            cell::Flags::STRIKEOUT,
                         ) {
-                            cell_line_rects.push(strikethrough);
+                            cell_line_rects.push(strikeout);
                         }
 
-                        // Change the last checked cell for underline/strikethrough
+                        // Change the last checked cell for underline/strikeout
                         last_cell = Some(cell);
 
                         // Draw the cell
@@ -415,14 +415,14 @@ impl Display {
                         );
                     }
 
-                    // If strikethrough hasn't been reset, draw until the last cell
+                    // If strikeout hasn't been reset, draw until the last cell
-                    if let Some(start) = start_strikethrough {
+                    if let Some(start) = start_strikeout {
                         cell_line_rects.push(
                             cell_line_rect(
                                 &start,
                                 &last_cell.unwrap(),
                                 &metrics, &size_info,
-                                cell::Flags::STRIKE_THROUGH
+                                cell::Flags::STRIKEOUT
                             )
                         );
                     }
@@ -482,8 +482,8 @@ impl Display {
     }
 }
 
-// Check if the underline/strikethrough state has changed
+// Check if the underline/strikeout state has changed
-// This returns a new rectangle whenever an underline/strikethrough ends
+// This returns a new rectangle whenever an underline/strikeout ends
 fn calculate_cell_line_state(
     cell: RenderableCell,
     start_cell_line: &mut Option<RenderableCell>,
@@ -504,8 +504,7 @@ fn calculate_cell_line_state(
             }
 
             // Check if we need to start a new line
-            // because the cell color has changed
+            *start_cell_line = if cell.flags.contains(flag) {
-            *start_cell_line = if cell.fg != start.fg && cell.flags.contains(flag) {
                 // Start a new line
                 Some(cell)
             } else {
@@ -525,7 +524,7 @@ fn calculate_cell_line_state(
     None
 }
 
-// Create a colored rectangle for an underline/strikethrough based on two cells
+// Create a colored rectangle for an underline/strikeout based on two cells
 fn cell_line_rect(
     start: &RenderableCell,
     end: &RenderableCell,
@@ -537,26 +536,29 @@ fn cell_line_rect(
     let end_x = ((end.column.0 + 1) as f64 * metrics.average_advance) as u32;
     let width = end_x - x;
 
-    let y = match flag {
+    let (y, height) = match flag {
         cell::Flags::UNDERLINE => {
             // Get the baseline positon and offset it down by (-) underline position
             // then move it up by half the underline thickness
-            ((start.line.0 as f32 + 1.) * metrics.line_height as f32 + metrics.descent
+            let y = ((start.line.0 as f32 + 1.) * metrics.line_height as f32 + metrics.descent
-             - metrics.underline_position - metrics.underline_thickness / 2.).round() as u32
+                - metrics.underline_position
-        },
+                - metrics.underline_thickness / 2.)
-        cell::Flags::STRIKE_THROUGH => {
+                .round() as u32;
-            // Get half-way point between cell top and baseline
+            let height = metrics.underline_thickness as u32;
-            // Then offset it down by (-) underline position and
+            (y, height)
-            // move it up by half the underline thickness
+        }
-            // TODO: Moving the strikethrough down by underline thickness is a hack
+        cell::Flags::STRIKEOUT => {
-            ((start.line.0 as f32) * metrics.line_height as f32
+            // Get the baseline positon and offset it up by strikeout position
-             + (metrics.line_height as f32 + metrics.descent) / 2.
+            // then move it up by half the strikeout thickness
-             - metrics.underline_thickness / 2.
+            let y = ((start.line.0 as f32 + 1.) * metrics.line_height as f32 + metrics.descent
-             - metrics.underline_position).round() as u32
+                - metrics.strikeout_position
-        },
+                - metrics.strikeout_thickness / 2.)
+                .round() as u32;
+            let height = metrics.strikeout_thickness as u32;
+            (y, height)
+        }
         _ => panic!("Invalid flag for cell line drawing specified"),
     };
-    let height = metrics.underline_thickness as u32;
 
     let rect = Rect::new(x + size.padding_x as u32, y + size.padding_y as u32, width, height);
     let color = start.fg;

src/renderer/mod.rs

@@ -702,7 +702,7 @@ impl QuadRenderer {
         let rect = Rect::new(0, 0, *size.width, *size.height);
         self.render_rect(&rect, color, visual_bell_intensity as f32, size);
 
-        // Draw underlines and strikethroughs
+        // Draw underlines and strikeouts
         for cell_line_rect in cell_line_rects {
             self.render_rect(&cell_line_rect.0, cell_line_rect.1, 255., size);
         }

src/term/cell.rs

@@ -27,7 +27,7 @@ bitflags! {
         const WIDE_CHAR_SPACER  = 0b0_0100_0000;
         const DIM               = 0b0_1000_0000;
         const DIM_BOLD          = 0b0_1000_0010;
-        const STRIKE_THROUGH    = 0b1_0000_0000;
+        const STRIKEOUT         = 0b1_0000_0000;
     }
 }
 
@@ -104,7 +104,7 @@ impl Cell {
     pub fn is_empty(&self) -> bool {
         self.c == ' ' &&
             self.bg == Color::Named(NamedColor::Background) &&
-            !self.flags.intersects(Flags::INVERSE | Flags::UNDERLINE | Flags::STRIKE_THROUGH)
+            !self.flags.intersects(Flags::INVERSE | Flags::UNDERLINE | Flags::STRIKEOUT)
     }
 
     #[inline]

src/term/mod.rs

@@ -1809,8 +1809,8 @@ impl ansi::Handler for Term {
             Attr::CancelItalic => self.cursor.template.flags.remove(cell::Flags::ITALIC),
             Attr::Underscore => self.cursor.template.flags.insert(cell::Flags::UNDERLINE),
             Attr::CancelUnderline => self.cursor.template.flags.remove(cell::Flags::UNDERLINE),
-            Attr::Strike => self.cursor.template.flags.insert(cell::Flags::STRIKE_THROUGH),
+            Attr::Strike => self.cursor.template.flags.insert(cell::Flags::STRIKEOUT),
-            Attr::CancelStrike => self.cursor.template.flags.remove(cell::Flags::STRIKE_THROUGH),
+            Attr::CancelStrike => self.cursor.template.flags.remove(cell::Flags::STRIKEOUT),
             _ => {
                 debug!("Term got unhandled attr: {:?}", attr);
             }