From b470218d9a89bc29116853260a01af6cab450dae Mon Sep 17 00:00:00 2001
From: Eelco Dolstra <edolstra@gmail.com>
Date: Fri, 6 May 2022 13:14:49 +0200
Subject: [PATCH] renderMarkdownToTerminal(): Avoid line overflow

Lowdown doesn't respect '.cols' exactly (maybe because of the
whitespace in front of each line), so adjust .cols a bit.
---
 src/libcmd/markdown.cc | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/libcmd/markdown.cc b/src/libcmd/markdown.cc
index 29bb4d31e..71f9c8dff 100644
--- a/src/libcmd/markdown.cc
+++ b/src/libcmd/markdown.cc
@@ -9,10 +9,12 @@ namespace nix {
 
 std::string renderMarkdownToTerminal(std::string_view markdown)
 {
+    int windowWidth = getWindowSize().second;
+
     struct lowdown_opts opts {
         .type = LOWDOWN_TERM,
         .maxdepth = 20,
-        .cols = std::max(getWindowSize().second, (unsigned short) 80),
+        .cols = (size_t) std::max(windowWidth - 5, 60),
         .hmargin = 0,
         .vmargin = 0,
         .feat = LOWDOWN_COMMONMARK | LOWDOWN_FENCED | LOWDOWN_DEFLIST | LOWDOWN_TABLES,