Following bug#62508, I've taken a bit of a closer look at the compiler
regexp for ModelSim. I've modified it so that it can differentiate
between Errors, Warnings and Notes when highlighting. I also make use of
Xilinx Vivado at work, for which I've added a new compiler entry:


--- a/lisp/progmodes/vhdl-mode.el
+++ b/lisp/progmodes/vhdl-mode.el
@@ -286,7 +286,7 @@ vhdl-compiler-alist
     ;;    counter_rtl.vhd(29):Conditional signal assignment line__29
     ("ModelSim" "vcom" "-93 -work \\1" "make" "-f \\1"
      nil "vlib \\1; vmap \\2 \\1" "./" "work/" "Makefile" "modelsim"
-     ("^\\(ERROR\\|WARNING\\|\\*\\* Error\\|\\*\\* Warning\\)[^:]*:\\( *\\[[0-9]+]\\| ([^)]+)\\)? \\([^ \t\n]+\\)(\\([0-9]+\\)):" 3 4 nil)
+     ("^\\(?:\\(?1:ERROR\\|\\*\\* Error\\)\\|\\(?2:WARNING\\|\\*\\* Warning\\)\\|\\(?3:NOTE\\|\\*\\* Note\\)\\)[^:]*:\\( *\\[[0-9]+]\\| ([^)]+)\\)? \\(?4:[^ \t\n]+\\)(\\(?5:[0-9]+\\)):" 4 5 nil (2 . 3))
      ("" 0)
      ("\\1/_primary.dat" "\\2/\\1.dat" "\\1/_primary.dat"
       "\\1/_primary.dat" "\\1/body.dat" downcase))
@@ -385,6 +385,13 @@ vhdl-compiler-alist
      nil "mkdir \\1" "./" "work/" "Makefile" "xilinx"
      ("^ERROR:HDLParsers:[0-9]+ - \"\\([^ \t\n]+\\)\" Line \\([0-9]+\\)\\." 1 2 nil) ("" 0)
      nil)
+    ;; Xilinx Vivado:
+    ;; ERROR: [VRFC 10-1412] syntax error near o_idle [test.vhd:23]
+    ("Xilinx Vivado" "xvhdl" "" "make" "-f \\1"
+     nil "mkdir \\1" "./" "work" "Makefile" "vivado"
+     ("^\\(?:\\(?1:ERROR\\)\\|\\(?2:WARNING\\)\\|\\(?3:INFO\\)\\): \\(.+\\) \\[\\(?4:[^ \t\n]+\\):\\(?5:[0-9]+\\)\\]" 4 5 nil (2 . 3)) ("" 0)
+     ("\\1/entity" "\\2/\\1" "\\1/configuration"
+      "\\1/package" "\\1/body" downcase))
     )
   "List of available VHDL compilers and their properties.
Each list entry specifies the following items for a compiler:


The patch was generated from the emacs master branch. I would greatly
appreciate it if these changes could find their way in some form into a
future emacs release.

Cyril


In GNU Emacs 28.2 (build 2, x86_64-w64-mingw32)
of 2022-10-11 built on fv-az277-711
Repository revision: b35f9af313a5d5c42988eb5a7751209b4234a67e
Repository branch: master
Windowing system distributor 'Microsoft Corp.', version 10.0.19044
System Description: Microsoft Windows 10 Pro (v10.0.2009.19044.2846)

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