From 5ef88457b8bdef957fcbb3cd0e7740595fad1949 Mon Sep 17 00:00:00 2001
From: Guillaume Maudoux <guillaume.maudoux@tweag.io>
Date: Thu, 28 Apr 2022 13:00:24 +0200
Subject: [PATCH] Better document error location indent

---
 src/libutil/error.cc | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/src/libutil/error.cc b/src/libutil/error.cc
index c66dfa112..7dc8c1941 100644
--- a/src/libutil/error.cc
+++ b/src/libutil/error.cc
@@ -180,20 +180,24 @@ void printCodeLines(std::ostream & out,
     }
 }
 
+// Enough indent to align with with the `... `
+// prepended to each element of the trace
+#define ELLIPSIS_INDENT "  "
+
 void printAtPos(const ErrPos & pos, std::ostream & out)
 {
     if (pos) {
         switch (pos.origin) {
             case foFile: {
-                out << fmt(ANSI_BLUE "  at " ANSI_WARNING "%s:%s" ANSI_NORMAL ":", pos.file, showErrPos(pos));
+                out << fmt(ELLIPSIS_INDENT "at " ANSI_WARNING "%s:%s" ANSI_NORMAL ":", pos.file, showErrPos(pos));
                 break;
             }
             case foString: {
-                out << fmt(ANSI_BLUE "  at " ANSI_WARNING "«string»:%s" ANSI_NORMAL ":", showErrPos(pos));
+                out << fmt(ELLIPSIS_INDENT "at " ANSI_WARNING "«string»:%s" ANSI_NORMAL ":", showErrPos(pos));
                 break;
             }
             case foStdin: {
-                out << fmt(ANSI_BLUE "  at " ANSI_WARNING "«stdin»:%s" ANSI_NORMAL ":", showErrPos(pos));
+                out << fmt(ELLIPSIS_INDENT "at " ANSI_WARNING "«stdin»:%s" ANSI_NORMAL ":", showErrPos(pos));
                 break;
             }
             default: