patch 9.0.1478: filetypes for *.v files not detected properly
Problem: Filetypes for *.v files not detected properly.
Solution: Use the file contents to detect the filetype. (Turiiya,
closes #12281)
diff --git a/runtime/autoload/dist/ft.vim b/runtime/autoload/dist/ft.vim
index 5d2053d..4e0906d 100644
--- a/runtime/autoload/dist/ft.vim
+++ b/runtime/autoload/dist/ft.vim
@@ -1106,5 +1106,40 @@
endif
enddef
+# Set the filetype of a *.v file to Verilog, V or Cog based on the first 200
+# lines.
+export def FTv()
+ if did_filetype()
+ # ":setf" will do nothing, bail out early
+ return
+ endif
+
+ for line in getline(1, 200)
+ if line[0] =~ '^\s*/'
+ # skip comment line
+ continue
+ endif
+
+ # Verilog: line ends with ';' followed by an optional variable number of
+ # spaces and an optional start of a comment.
+ # Example: " b <= a + 1; // Add 1".
+ if line =~ ';\(\s*\)\?\(/.*\)\?$'
+ setf verilog
+ return
+ endif
+
+ # Coq: line ends with a '.' followed by an optional variable number of
+ # spaces and an optional start of a comment.
+ # Example: "Definition x := 10. (*".
+ if line =~ '\.\(\s*\)\?\((\*.*\)\?$'
+ setf coq
+ return
+ endif
+ endfor
+
+ # No line matched, fall back to "v".
+ setf v
+enddef
+
# Uncomment this line to check for compilation errors early
# defcompile