Prefer _1 and _2 naming for test files

This is less to type, and it's now alphabetical, so e.g.
sample_files/*.kt just works as a test argument.

manual/src/adding_a_parser.md

@@ -125,11 +125,11 @@ Finally, add a regression test for your language. This ensures that
 the output for your test file doesn't change unexpectedly.
 
 Regression test files live in `sample_files/` and have the form
-`foo_before.abc` and `foo_after.abc`.
+`foo_1.abc` and `foo_2.abc`.
 
 ```
-$ nano simple_before.json
-$ nano simple_after.json
+$ nano simple_1.json
+$ nano simple_2.json
 ```
 
 Run the regression test script and update the `.expected` file.

manual/src/line_diffing.md

@@ -18,7 +18,7 @@ Variations, Myers
 ```
 # Modern diff supports colour, but see also
 # https://www.colordiff.org/
-$ diff --color=always -u sample_files/css_before.css sample_files/css_after.css
+$ diff --color=always -u sample_files/css_1.css sample_files/css_2.css
 ```
 
 Note that GNU diff [originally used the Hunt-McIlroy
@@ -64,11 +64,11 @@ work](https://stackoverflow.com/questions/40133534/is-gits-implementation-of-the
 
 ```
 # Original behaviour
-$ git diff --no-indent-heuristic --no-index sample_files/css_before.css sample_files/css_after.css
+$ git diff --no-indent-heuristic --no-index sample_files/css_1.css sample_files/css_2.css
 # As of git 2.11, this heuristic is enabled by default.
-$ git diff --indent-heuristic --no-index sample_files/css_before.css sample_files/css_after.css
+$ git diff --indent-heuristic --no-index sample_files/css_1.css sample_files/css_2.css
 # Patience algorithm does a better a job in this example.
-$ git diff --patience --no-index sample_files/css_before.css sample_files/css_after.css
+$ git diff --patience --no-index sample_files/css_1.css sample_files/css_2.css
 ```
 
 [Diff Match Patch](https://github.com/google/diff-match-patch) also
@@ -84,7 +84,7 @@ of the patience algorithm](https://github.com/git/git/commit/85551232b56e763ecfc
 
 ```
 # Inferior to patience on this example file.
-$ git diff --histogram --no-index sample_files/css_before.css sample_files/css_after.css
+$ git diff --histogram --no-index sample_files/css_1.css sample_files/css_2.css
 ```
 
 ### prettydiff

manual/src/parsing.md

@@ -12,7 +12,7 @@ the parse tree that tree-sitter produces using the `--dump-ts`
 flag.
 
 ```
-$ difft --dump-ts sample_files/javascript_simple_before.js | head
+$ difft --dump-ts sample_files/javascript_simple_1.js | head
 program (0, 0) - (7, 0)
   comment (0, 0) - (0, 8) "// hello"
   expression_statement (1, 0) - (1, 6)

manual/src/profiling.md

@@ -5,22 +5,22 @@ If you have a file that's particularly slow, you can use
 which functions are slow.
 
 ```
-$ CARGO_PROFILE_RELEASE_DEBUG=true cargo flamegraph --bin difft sample_files/slow_before.rs sample_files/slow_after.rs
+$ CARGO_PROFILE_RELEASE_DEBUG=true cargo flamegraph --bin difft sample_files/slow_1.rs sample_files/slow_2.rs
 ```
 
 It's also worth looking at memory usage, as graph traversal bugs can
 lead to huge memory consumption.
 
 ```
-$ /usr/bin/time -v ./target/release/difft sample_files/slow_before.rs sample_files/slow_after.rs
+$ /usr/bin/time -v ./target/release/difft sample_files/slow_1.rs sample_files/slow_2.rs
 ```
 
 If timing measurement are noisy, Linux's `perf` tool will report
 instructions executed, which is more stable.
 
 ```
-$ perf stat ./target/release/difft sample_files/slow_before.rs sample_files/slow_after.rs
-$ perf stat ./target/release/difft sample_files/typing_old.ml sample_files/typing_new.ml
+$ perf stat ./target/release/difft sample_files/slow_1.rs sample_files/slow_2.rs
+$ perf stat ./target/release/difft sample_files/typing_1.ml sample_files/typing_2.ml
 ```
 
 Many more profiling techniques are discussed in [The Rust Performance

manual/src/tricky_cases.md

@@ -437,7 +437,7 @@ parse errors occur, to avoid diffing incomplete syntax trees. When
 this occurs, the file header reports the error count.
 
 ```
-$ difft sample_files/syntax_error_before.js sample_files/syntax_error_after.js
+$ difft sample_files/syntax_error_1.js sample_files/syntax_error_2.js
 sample_files/syntax_error_after.js --- Text (2 errors, exceeded DFT_PARSE_ERROR_LIMIT)
 ...
 ```

manual/src/usage.md

@@ -11,7 +11,7 @@ $ difft sample_files/before.js sample_files/after.js
 ### Diffing Directories
 
 ```
-$ difft sample_files/dir_before/ sample_files/dir_after/
+$ difft sample_files/dir_1/ sample_files/dir_2/
 ```
 
 Difftastic will recursively walk the two directories, diffing files

sample_files/compare.expected

@@ -1,294 +1,291 @@
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+sample_files/Session_1.kt sample_files/Session_2.kt
+7f12794f0cd13609984eca50002cc38c  -
 
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-626e22f4f256ae591ece3f280176b3f7  -
+sample_files/ada_1.adb sample_files/ada_2.adb
+eb3b0e12e239ae33789136380e81406b  -
 
-sample_files/added_line_before.txt sample_files/added_line_after.txt
-5996d2f9cc7c1e3acfdeafcf0f5e43c1  -
+sample_files/added_line_1.txt sample_files/added_line_2.txt
+8a1587e6b5fc53f2ec2ac665a5d00372  -
 
-sample_files/align_footer_before.txt sample_files/align_footer_after.txt
-202e1821f9214f74568578dbc12ca83e  -
+sample_files/align_footer_1.txt sample_files/align_footer_2.txt
+d640bd2de31e56a39f0efb92aff0f379  -
 
-sample_files/apex_before.cls sample_files/apex_after.cls
-fde5c2cb739fb8bb42a592f64190137e  -
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-8ce28404b7f7935a66bd13b14a4dbcb4  -
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+sample_files/racket_1.rkt sample_files/racket_2.rkt
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-sample_files/racket_before.rkt sample_files/racket_after.rkt
-7384e9c384cdaa86ff40e4106e9e6ebd  -
+sample_files/ruby_1.rb sample_files/ruby_2.rb
+d4d591902030355656f5c18c78f965a6  -
 
-sample_files/ruby_before.rb sample_files/ruby_after.rb
-e690af6874c954b271ef7ea8eb1d8af1  -
+sample_files/scala_1.scala sample_files/scala_2.scala
+f19e0f0ab3cabb1b5c863b78a5a6b2d2  -
 
-sample_files/scala_before.scala sample_files/scala_after.scala
-8b2d6102b120d4a0de790c33409eedc3  -
+sample_files/scheme_1.scm sample_files/scheme_2.scm
+09f8683219a8491c22d9a2fa1ce98c16  -
 
-sample_files/scheme_before.scm sample_files/scheme_after.scm
-d00fcfe46aca3e2877bda566f1a3908b  -
+sample_files/simple_1.js sample_files/simple_2.js
+01c1ee448ac9a49abd0b68a90d7f9a6c  -
 
-sample_files/simple_before.js sample_files/simple_after.js
-c9c5d1c61b7e8a953a361343bcd13c95  -
+sample_files/simple_1.scss sample_files/simple_2.scss
+265261e79df78abfc09392d72a0273d8  -
 
-sample_files/simple_before.scss sample_files/simple_after.scss
-276a637404ace5617aadd09751cc0b07  -
+sample_files/simple_1.txt sample_files/simple_2.txt
+416d05b8a02e41cb70b78d28cd3153d9  -
 
-sample_files/simple_before.txt sample_files/simple_after.txt
-8b88ed3d752ca7ae72ed2a44e3cfc9df  -
+sample_files/slider_1.rs sample_files/slider_2.rs
+d10128f3d9ffc4a8670f417a9371bacc  -
 
-sample_files/slider_at_end_before.json sample_files/slider_at_end_after.json
-51ded63239198014e35064ad79b957ab  -
+sample_files/slider_at_end_1.json sample_files/slider_at_end_2.json
+cb370f1c0ccc5e155743330629f899f0  -
 
-sample_files/slider_before.rs sample_files/slider_after.rs
-b71d929c4b20c9771f0e0115012bbb0c  -
+sample_files/slow_1.rs sample_files/slow_2.rs
+2e76c128e008d5d255fdd29562208abc  -
 
-sample_files/slow_before.rs sample_files/slow_after.rs
-34ef9f4f02e01f2450b17c3105da22f6  -
+sample_files/small_1.js sample_files/small_2.js
+6bd2d5c9e2b843cfe0748355f3203de9  -
 
-sample_files/small_before.js sample_files/small_after.js
-68b801018168d9773dce32a2ac51a5b9  -
+sample_files/string_subwords_1.el sample_files/string_subwords_2.el
+56f0551c8ba2904bdab8bc72280f28b2  -
 
-sample_files/string_subwords_before.el sample_files/string_subwords_after.el
-30aefbabda04615a531fe5b25ba1fa3e  -
+sample_files/strings_1.el sample_files/strings_2.el
+7e136d188ce03cc8fba2b1530a502ffc  -
 
-sample_files/strings_before.el sample_files/strings_after.el
-cca854a0ba20bb5691d46706e7f62d50  -
+sample_files/swift_1.swift sample_files/swift_2.swift
+6963eb333c5a37ce9ae70f257d5af7b2  -
 
-sample_files/swift_before.swift sample_files/swift_after.swift
-c5a52d09c9078236765696f436ea7661  -
+sample_files/syntax_error_1.js sample_files/syntax_error_2.js
+d4c4f1a50238480caa3ae3ed33b64d35  -
 
-sample_files/syntax_error_before.js sample_files/syntax_error_after.js
-857cd151569443f5698939f97100e82e  -
+sample_files/tab_1.c sample_files/tab_2.c
+73e5f3531ab63def4ecba423a484a869  -
 
-sample_files/tab_before.c sample_files/tab_after.c
-7e4345e584d440a136f90becb0ef45bc  -
+sample_files/tab_1.txt sample_files/tab_2.txt
+a17e978720fe4c1b25614402910cc695  -
 
-sample_files/tab_before.txt sample_files/tab_after.txt
-c7fcee21dd5ebd251e2cf4cd7d4446d2  -
+sample_files/tailwind_1.css sample_files/tailwind_2.css
+95129d12808d15e32ea726eba1832d4d  -
 
-sample_files/tailwind_before.css sample_files/tailwind_after.css
-4fbb1d828afa99ad722944d97266e89e  -
+sample_files/text_1.txt sample_files/text_2.txt
+87914b8ef4a6b042054633ddb182ce02  -
 
-sample_files/text_before.txt sample_files/text_after.txt
-5fa6a472ccdeda0142eda3edcaeaa189  -
+sample_files/todomvc_1.gleam sample_files/todomvc_2.gleam
+070fbdea2a503392f0f0c37f1b6c04bb  -
 
-sample_files/todomvc_before.gleam sample_files/todomvc_after.gleam
-87aec5b4eb38e5c3f9c84368d28185d2  -
+sample_files/toml_1.toml sample_files/toml_2.toml
+df36cf07bb1b56fbdbcea7f651b4344d  -
 
-sample_files/toml_before.toml sample_files/toml_after.toml
-34fbe2ec9ff514cd53edfe8d961d5093  -
+sample_files/trailling_newline_1.yaml sample_files/trailling_newline_2.yaml
+104da15de44e4625496246baac20d320  -
 
-sample_files/trailling_newline_before.yaml sample_files/trailling_newline_after.yaml
-6c2b9be2f28bac9d242f5145e4732c43  -
+sample_files/typescript_1.ts sample_files/typescript_2.ts
+fee7ee33d2037ad1941ba6bb5532a1db  -
 
-sample_files/typescript_before.ts sample_files/typescript_after.ts
-27bc9e394d8119c7dd208a9d7985681e  -
+sample_files/typing_1.ml sample_files/typing_2.ml
+36161bd77a8c86643bc90656ec41c92c  -
 
-sample_files/typing_before.ml sample_files/typing_after.ml
-709c41b6c1a00c27f67cd39c823c9891  -
+sample_files/utf16_1.py sample_files/utf16_2.py
+39014a682ed2318f980c7ea4177cf659  -
 
-sample_files/utf16_before.py sample_files/utf16_after.py
-bbf22d2c5003b638c0f8d08f21bbbb66  -
+sample_files/vhdl_1.vhd sample_files/vhdl_2.vhd
+0f4de895a568092795c87f3d0a8a07e8  -
 
-sample_files/vhdl_before.vhd sample_files/vhdl_after.vhd
-eb987aa621cfa733bb4fcd52b255fbbf  -
+sample_files/whitespace_1.tsx sample_files/whitespace_2.tsx
+ac8b1a89ac26333f2d4e9433b2ca3958  -
 
-sample_files/whitespace_before.tsx sample_files/whitespace_after.tsx
-5b989281ee27b63d6fb26474e3d49f25  -
+sample_files/xml_1.xml sample_files/xml_2.xml
+c474ecc6c1c30051465ef862cfddc01d  -
 
-sample_files/xml_before.xml sample_files/xml_after.xml
-56cae800a4fb612ac5c1e0b5cb9c43b8  -
+sample_files/yaml_1.yaml sample_files/yaml_2.yaml
+f068239fc7bade0e6de96d81136c1ac5  -
 
-sample_files/yaml_before.yaml sample_files/yaml_after.yaml
-9a94455c22d827576c73d8a8238dd55d  -
-
-sample_files/zig_before.zig sample_files/zig_after.zig
-4753ca757c03b1296976ff71e220c62b  -
+sample_files/zig_1.zig sample_files/zig_2.zig
+4516796003b81f35bfa57d84bb7c0cbe  -
 

sample_files/compare_all.sh

@@ -24,8 +24,8 @@ LC_ALL=C
 LC_COLLATE=C
 
 echo "==> Check outputs"
-for before_f in sample_files/*before.*; do
-    after_f=${before_f/before/after}
+for before_f in sample_files/*_1.*; do
+    after_f=${before_f/_1/_2}
     echo "$before_f $after_f"
 
     difft_out=$(DFT_WIDTH=180 ./target/release/difft --color=always "$before_f" "$after_f" | md5sum)

sample_files/hidden-after/.hidden/doc.txt

@@ -1 +0,0 @@
-after

sample_files/hidden-before/.hidden.txt

@@ -1 +0,0 @@
-before

sample_files/hidden-before/.hidden/doc.txt

@@ -1 +0,0 @@
-before

sample_files/hidden_1/.hidden/doc.txt

@@ -0,0 +1 @@
+before

sample_files/hidden_2/.hidden.txt

@@ -0,0 +1 @@
+after

sample_files/hidden_2/.hidden/doc.txt

@@ -0,0 +1 @@
+after