Add heuristics for .h extension

autoload/polyglot.vim

@@ -154,6 +154,25 @@ func! polyglot#DetectAspFiletype()
   setf aspvbs | return
 endfunc
 
+func! polyglot#DetectHFiletype()
+  for lnum in range(1, min([line("$"), 200]))
+    let line = getline(lnum)
+    if line =~# '^\s*\(@\(interface\|class\|protocol\|property\|end\|synchronised\|selector\|implementation\)\(\<\|\>\)\|#import\s\+.\+\.h[">]\)'
+      if exists("g:c_syntax_for_h")
+        setf objc | return
+      endif
+      setf objcpp | return
+    endif
+  endfor
+  if exists("g:c_syntax_for_h")
+    setf c | return
+  endif
+  if exists("g:ch_syntax_for_h")
+    setf ch | return
+  endif
+  setf cpp | return
+endfunc
+
 func! polyglot#DetectMFiletype()
   let saw_comment = 0
   for lnum in range(1, min([line("$"), 100]))

autoload/sleuth.vim

@@ -10,7 +10,7 @@ let s:globs = {
   \ 'abc': '*.abc',
   \ 'abel': '*.abl',
   \ 'acedb': '*.wrm',
-  \ 'ada': '*.adb,*.ads,*.ada,*.gpr',
+  \ 'ada': '*.adb,*.ads,*.ada,*.adc,*.gpr,*.ada_m',
   \ 'ahdl': '*.tdf',
   \ 'aidl': '*.aidl',
   \ 'alsaconf': '',
@@ -34,17 +34,17 @@ let s:globs = {
   \ 'autoit': '*.au3',
   \ 'automake': '[Mm]akefile.am,GNUmakefile.am',
   \ 'ave': '*.ave',
-  \ 'awk': '*.awk',
+  \ 'awk': '*.awk,*.gawk',
   \ 'basic': '*.basic',
   \ 'blade': '*.blade,*.blade.php',
   \ 'brewfile': 'Brewfile',
-  \ 'c': '*.c,*.cats,*.h,*.idc',
+  \ 'c': '*.c,*.cats,*.h,*.idc,*.qc',
   \ 'caddyfile': 'Caddyfile',
   \ 'carp': '*.carp',
   \ 'clojure': '*.clj,*.boot,*.cl2,*.cljc,*.cljs,*.cljs.hl,*.cljscm,*.cljx,*.hic,*.edn,riemann.config,build.boot,profile.boot',
   \ 'cmake': '*.cmake,*.cmake.in,CMakeLists.txt',
   \ 'coffee': '*.coffee,*._coffee,*.cake,*.cjsx,*.iced,*.coffeekup,Cakefile',
-  \ 'cpp': '*.cpp,*.c++,*.cc,*.cp,*.cxx,*.h,*.h++,*.hh,*.hpp,*.hxx,*.inc,*.inl,*.ipp,*.tcc,*.tpp',
+  \ 'cpp': '*.cpp,*.c++,*.cc,*.cp,*.cxx,*.h,*.h++,*.hh,*.hpp,*.hxx,*.inc,*.inl,*.ipp,*.tcc,*.tpp,*.moc',
   \ 'cql': '*.cql',
   \ 'cryptol': '*.cry,*.cyl,*.lcry,*.lcyl',
   \ 'crystal': '*.cr,Projectfile',
@@ -52,7 +52,7 @@ let s:globs = {
   \ 'cucumber': '*.feature,*.story',
   \ 'cuesheet': '*.cue',
   \ 'd': '*.d,*.di',
-  \ 'dart': '*.dart',
+  \ 'dart': '*.dart,*.drt',
   \ 'dcov': '*.lst',
   \ 'dd': '*.dd',
   \ 'ddoc': '*.ddoc',

ftdetect/polyglot.vim

@@ -134,7 +134,7 @@ if !has_key(s:disabled_packages, 'awk')
 endif
 
 if !has_key(s:disabled_packages, 'c/c++')
-  au! BufRead,BufNewFile *.c,*.cpp,*.tpp
+  au! BufRead,BufNewFile *.cpp,*.tpp,*.c
 endif
 
 if !has_key(s:disabled_packages, 'cmake')
@@ -343,7 +343,9 @@ endif
 
 if !has_key(s:disabled_packages, 'ada')
   au BufNewFile,BufRead *.ada setf ada
+  au BufNewFile,BufRead *.ada_m setf ada
   au BufNewFile,BufRead *.adb setf ada
+  au BufNewFile,BufRead *.adc setf ada
   au BufNewFile,BufRead *.ads setf ada
   au BufNewFile,BufRead *.gpr setf ada
 endif
@@ -465,6 +467,7 @@ endif
 
 if !has_key(s:disabled_packages, 'awk')
   au BufNewFile,BufRead *.awk setf awk
+  au BufNewFile,BufRead *.gawk setf awk
 endif
 
 if !has_key(s:disabled_packages, 'reason')
@@ -473,16 +476,11 @@ if !has_key(s:disabled_packages, 'reason')
 endif
 
 if !has_key(s:disabled_packages, 'c/c++')
-  au BufNewFile,BufRead *.c setf c
-  au BufNewFile,BufRead *.cats setf c
-  au BufNewFile,BufRead *.h setf c
-  au BufNewFile,BufRead *.idc setf c
   au BufNewFile,BufRead *.c++ setf cpp
   au BufNewFile,BufRead *.cc setf cpp
   au BufNewFile,BufRead *.cp setf cpp
   au BufNewFile,BufRead *.cpp setf cpp
   au BufNewFile,BufRead *.cxx setf cpp
-  au BufNewFile,BufRead *.h setf cpp
   au BufNewFile,BufRead *.h++ setf cpp
   au BufNewFile,BufRead *.hh setf cpp
   au BufNewFile,BufRead *.hpp setf cpp
@@ -490,8 +488,14 @@ if !has_key(s:disabled_packages, 'c/c++')
   au BufNewFile,BufRead *.inc setf cpp
   au BufNewFile,BufRead *.inl setf cpp
   au BufNewFile,BufRead *.ipp setf cpp
+  au BufNewFile,BufRead *.moc setf cpp
   au BufNewFile,BufRead *.tcc setf cpp
   au BufNewFile,BufRead *.tpp setf cpp
+  au BufNewFile,BufRead *.c setf c
+  au BufNewFile,BufRead *.cats setf c
+  au BufNewFile,BufRead *.idc setf c
+  au BufNewFile,BufRead *.qc setf c
+  au! BufNewFile,BufRead *.h call polyglot#DetectHFiletype()
 endif
 
 if !has_key(s:disabled_packages, 'caddyfile')
@@ -566,6 +570,7 @@ endif
 
 if !has_key(s:disabled_packages, 'dart')
   au BufNewFile,BufRead *.dart setf dart
+  au BufNewFile,BufRead *.drt setf dart
 endif
 
 if !has_key(s:disabled_packages, 'dhall')
@@ -1065,7 +1070,7 @@ if !has_key(s:disabled_packages, 'nix')
 endif
 
 if !has_key(s:disabled_packages, 'objc')
-  au BufNewFile,BufRead *.h setf objc
+  au! BufNewFile,BufRead *.h call polyglot#DetectHFiletype()
   au! BufNewFile,BufRead *.m call polyglot#DetectMFiletype()
 endif
 

heuristics.yaml

@@ -23,6 +23,20 @@ rules:
   filetype: aspperl
 - filetype: aspvbs
 ---
+extensions: [h]
+rules:
+- lines: 200
+  pattern: '^\s*(@(interface|class|protocol|property|end|synchronised|selector|implementation)\b|#import\s+.+\.h[">])'
+  rules:
+  - if_exists: "g:c_syntax_for_h"
+    filetype: objc
+  - filetype: objcpp
+- if_exists: "g:c_syntax_for_h"
+  filetype: c
+- if_exists: "g:ch_syntax_for_h"
+  filetype: ch
+- filetype: cpp
+---
 extensions: [m]
 rules:
 - lines: 100

packages.yaml

@@ -93,7 +93,9 @@ filetypes:
   - adb
   - ads
   - ada
+  - adc
   - gpr
+  - ada_m
 ---
 name: ahdl
 remote: vim/vim:runtime
@@ -191,6 +193,11 @@ filetypes:
   - '*/.aptitude/config'
   - '*/etc/apt/apt.conf.d/[^.]*'
   - '*/etc/apt/apt.conf.d/*.conf'
+  ignored_warnings:
+  # some kind of bugs in filetype detection algorithm
+  - '*/etc/apt/apt.conf.d/{[-_[:alnum:]]\+,[-_.[:alnum:]]\+.conf}'
+  - '*/etc/apt/apt.conf.d/]\+'
+  - '*/etc/apt/apt.conf.d/]\+.conf'
 ---
 name: arch
 remote: vim/vim:runtime
@@ -302,19 +309,25 @@ filetypes:
 - name: awk
   extensions:
   - awk
+  - gawk
 ---
 name: c/c++
 remote: vim-jp/vim-cpp
 filetypes:
-- name: c
-  linguist: C
 - name: cpp
   linguist: C++
+  extra_extensions:
+  - moc
   ignored_extensions:
   # conflicts with more popular reason, remove after heuristics work
   - re
   # implemented by arduino
   - ino
+- name: c
+  linguist: C
+  extra_extensions:
+  # Quake C
+  - qc
 ---
 name: caddyfile
 remote: isobit/vim-caddyfile
@@ -358,10 +371,9 @@ filetypes:
   extra_extensions:
   # 17 results: https://github.com/search?q=extension%3Acoffeekup+html&type=Code
   - coffeekup
-  ignored_filenames:
+  ignored_warnings:
   # Probably mistake
   - '*Cakefile'
-  ignored_warnings:
   # Used by C#
   - csx
   # Used by Chuck
@@ -430,6 +442,8 @@ remote: dart-lang/dart-vim-plugin
 filetypes:
 - name: dart
   linguist: Dart
+  extra_extensions:
+  - drt
 ---
 name: dhall
 remote: vmchale/dhall-vim
@@ -470,7 +484,7 @@ filetypes:
   filenames:
   - 'docker-compose*.yaml'
   - 'docker-compose*.yml'
-  ignored_filenames:
+  ignored_warnings:
   # Probably mistakes?
   - 'docker-compose*.yaml*'
   - 'docker-compose*.yml*'

scripts/build

@@ -268,10 +268,6 @@ def rule_to_code(rule)
     end
   end
 
-  if rule.has_key?("rules")
-    return rule["rules"].map { |r| indent(rule_to_code(r), 0) }.join("\n")
-  end
-
   if rule.has_key?("pattern") || rule.has_key?("or") || rule.has_key?("and")
     return <<~EOS
       if #{pattern_to_condition(rule)}
@@ -280,6 +276,10 @@ def rule_to_code(rule)
     EOS
   end
 
+  if rule.has_key?("rules")
+    return rule["rules"].map { |r| indent(rule_to_code(r), 0) }.join("\n")
+  end
+
   if rule.has_key?("if_set")
     return <<~EOS
       if #{rule["negative"] ? "!" : ""}#{rule["if_set"]}
@@ -288,6 +288,14 @@ def rule_to_code(rule)
     EOS
   end
 
+  if rule.has_key?("if_exists")
+    return <<~EOS
+      if #{rule["negative"] ? "!" : ""}exists("#{rule["if_exists"]}")
+      #{indent(rule_to_code(except(rule, "if_exists", "negative")), 2)}
+      endif
+    EOS
+  end
+
   if rule.has_key?("set")
     return <<~EOS
       let #{rule["set"]} = 1
@@ -455,7 +463,7 @@ def generate_ftdetect(packages, heuristics)
       extensions = filetype["extensions"]
       filenames = filetype["filenames"]
 
-      expected_extensions = all_filetypes.has_key?(name) ? all_filetypes.fetch(name)[:extensions] : []
+      expected_extensions = (all_filetypes.has_key?(name) ? all_filetypes.fetch(name)[:extensions] : []).map(&:downcase)
       ignored_extensions = expand_all(filetype.fetch("ignored_extensions", []))
       ignored_warnings = expand_all(filetype.fetch("ignored_warnings", []))
 

scripts/test_extensions.vim

@@ -181,6 +181,18 @@ call TestExtension("ave", "foobar.ave", "")
 " Awk
 call TestExtension("awk", "foobar.awk", "")
 
+" C++
+call TestExtension("c", "foobar.c", "")
+call TestExtension("cpp", "foobar.cxx", "")
+call TestExtension("cpp", "foobar.c++", "")
+call TestExtension("cpp", "foobar.hh", "")
+call TestExtension("cpp", "foobar.hxx", "")
+call TestExtension("cpp", "foobar.hpp", "")
+call TestExtension("cpp", "foobar.ipp", "")
+call TestExtension("cpp", "foobar.moc", "")
+call TestExtension("cpp", "foobar.tcc", "")
+call TestExtension("cpp", "foobar.inl", "")
+
 " vim-polyglot only
 call TestExtension("blade", "test.blade.php", "")
 call TestExtension("yaml.ansible", "playbook.yml", "")
@@ -233,7 +245,7 @@ call TestExtension("vb", "vb.dsm", "")
 call TestExtension("vb", "vb.dsm", "")
 call TestExtension("vb", "vb.ctl", "")
 
-" Idris
+" .idr extension
 call TestExtension("idris", "lowercase.idr", "--idris1")
 call TestExtension("idris", "uppercase.idr", "--Idris1")
 call TestExtension("idris", "start-space-l.idr", "-- idris1")
@@ -253,7 +265,17 @@ call TestExtension("idris2", "two-spaces-u.idr", "-- Idris 2")
 call TestExtension("idris2", "mypkg.ipkg", "package mypkg\n\ndepends = effects")
 call TestExtension("idris2", "use-post-proj.idr", "%language PostfixProjections")
 
-" Literate Idris
+" .lidr extension
 call TestExtension("lidris", "lidris-1.lidr", "Some test plaintext\n\n> --idris1\n> myfact : Nat -> Nat\n> myfact Z = 1\n> myfact (S k) = (S k) * myfact k\n\nMore plaintext")
 call TestExtension("lidris2", "lidris-2.lidr", "Some test plaintext\n\n> --idris2\n> myfact : Nat -> Nat\n> myfact Z = 1\n> myfact (S k) = (S k) * myfact k\n\nMore plaintext")
 
+
+" .h extension
+call TestExtension("objcpp", "foo.h", "@interface MTNavigationController : UINavigationController")
+call TestExtension("cpp", "foo.h", "")
+let g:c_syntax_for_h = 1
+call TestExtension("objc", "foo.h", "@interface MTNavigationController : UINavigationController")
+call TestExtension("c", "foo.h", "")
+unlet g:c_syntax_for_h
+let g:ch_syntax_for_h = 1
+call TestExtension("ch", "foo.h", "")

scripts/test_filetypes.vim

@@ -45,8 +45,8 @@ call TestFiletype('autoit')
 call TestFiletype('ave')
 call TestFiletype('awk')
 call TestFiletype('reason')
-call TestFiletype('c')
 call TestFiletype('cpp')
+call TestFiletype('c')
 call TestFiletype('caddyfile')
 call TestFiletype('carp')
 call TestFiletype('clojure')