From b72acfe1f84501564d2048570c5dc32b45daedbd Mon Sep 17 00:00:00 2001
From: Claire Foster <aka.c42f@gmail.com>
Date: Thu, 9 Nov 2023 13:49:21 +1000
Subject: [PATCH 1/2] Fix highlighting of ranges which start with non-ascii
 chars

---
 src/source_files.jl  |  9 +++++++--
 test/source_files.jl | 15 +++++++++++++++
 2 files changed, 22 insertions(+), 2 deletions(-)

diff --git a/src/source_files.jl b/src/source_files.jl
index 06cae008..cf81c7b1 100644
--- a/src/source_files.jl
+++ b/src/source_files.jl
@@ -124,6 +124,10 @@ function Base.thisind(source::SourceFile, i::Int)
     thisind(source.code, i - source.byte_offset) + source.byte_offset
 end
 
+function Base.nextind(source::SourceFile, i::Int)
+    nextind(source.code, i - source.byte_offset) + source.byte_offset
+end
+
 Base.firstindex(source::SourceFile) = firstindex(source.code) + source.byte_offset
 Base.lastindex(source::SourceFile)  = lastindex(source.code)  + source.byte_offset
 
@@ -218,7 +222,8 @@ function highlight(io::IO, source::SourceFile, range::UnitRange;
         hitext = source[p:q]
         print(io, source[x:p-1])
         _printstyled(io, hitext; bgcolor=color)
-        print(io, source[q+1:d])
+        #print(io, source[q+1:d])
+        print(io, source[nextind(source,q):d])
         if d >= firstindex(source) && source[thisind(source, d)] != '\n'
             print(io, "\n")
         end
@@ -249,7 +254,7 @@ function highlight(io::IO, source::SourceFile, range::UnitRange;
             print(io, "⋮\n")
             _printstyled(io, source[z:q]; bgcolor=color)
         end
-        print(io, source[q+1:d])
+        print(io, source[nextind(source, q):d])
         source[thisind(source, d)] == '\n' || print(io, "\n")
         qline = source[c:q]
         _print_marker_line(io, "", qline, true, false, marker_line_color, note, notecolor)
diff --git a/test/source_files.jl b/test/source_files.jl
index 9a1548f1..0e36b7fe 100644
--- a/test/source_files.jl
+++ b/test/source_files.jl
@@ -103,6 +103,9 @@ end
     @test sprint(highlight, src, 3:4) == "abcd\n# └┘\nαβγδ\n+-*/"
     @test sprint(highlight, src, 4:4) == "abcd\n#  ╙\nαβγδ\n+-*/"
     @test sprint(highlight, src, 5:5) == "abcd\n#   └\nαβγδ\n+-*/"
+    @test sprint(highlight, src, 6:6) == "abcd\nαβγδ\n╙\n+-*/"
+    @test sprint(highlight, src, 6:9) == "abcd\nαβγδ\n└┘\n+-*/"
+    @test sprint(highlight, src, 8:8) == "abcd\nαβγδ\n#╙\n+-*/"
 
     # multi-byte chars
     @test sprint(highlight, src, 8:13) == """
@@ -149,6 +152,18 @@ end
         αβγδ
         #┘
         +-*/"""
+    @test sprint(highlight, src, 6:15) == """
+        abcd
+        ┌───
+        αβγδ
+        +-*/
+        ┘"""
+    @test sprint(highlight, src, 8:15) == """
+        abcd
+        #┌──
+        αβγδ
+        +-*/
+        ┘"""
     @test sprint(highlight, src, 1:18) == """
         ┌───
         abcd

From c1aba1574215e46de734e3b15468accc4ed45bf0 Mon Sep 17 00:00:00 2001
From: Claire Foster <aka.c42f@gmail.com>
Date: Thu, 9 Nov 2023 16:49:51 +1000
Subject: [PATCH 2/2] fixup! Fix highlighting of ranges which start with
 non-ascii chars

---
 src/source_files.jl | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/source_files.jl b/src/source_files.jl
index cf81c7b1..a8051a59 100644
--- a/src/source_files.jl
+++ b/src/source_files.jl
@@ -124,7 +124,7 @@ function Base.thisind(source::SourceFile, i::Int)
     thisind(source.code, i - source.byte_offset) + source.byte_offset
 end
 
-function Base.nextind(source::SourceFile, i::Int)
+function Base.nextind(source::SourceFile, i::Integer)
     nextind(source.code, i - source.byte_offset) + source.byte_offset
 end