From 2fd1f6596da972a529b5c7e2c5407f7b00f1b3f1 Mon Sep 17 00:00:00 2001
From: Alexander Wang <alex@terrastruct.com>
Date: Sat, 14 Dec 2024 15:37:18 -0700
Subject: [PATCH] man: document environment variables

---
 ci/release/template/man/d2.1 | 46 ++++++++++++++++++++++++++++++++++++
 1 file changed, 46 insertions(+)

diff --git a/ci/release/template/man/d2.1 b/ci/release/template/man/d2.1
index fa19626fa..1a5ebee02 100644
--- a/ci/release/template/man/d2.1
+++ b/ci/release/template/man/d2.1
@@ -147,6 +147,52 @@ Lists available themes
 Format all passed files
 .Ns .
 .El
+.Sh ENVIRONMENT VARIABLES
+Many flags can also be set with environment variables.
+.Bl -tag -width Ds
+.It Ev Sy D2_WATCH
+See -w[atch] flag.
+.It Ev Sy D2_LAYOUT
+See -l[ayout] flag.
+.It Ev Sy D2_THEME
+See -t[heme] flag.
+.It Ev Sy D2_DARK_THEME
+See --dark-theme flag.
+.It Ev Sy D2_PAD
+See --pad flag.
+.It Ev Sy D2_CENTER
+See --center flag.
+.It Ev Sy D2_SKETCH
+See -s[ketch] flag.
+.It Ev Sy D2_BUNDLE
+See -b[undle] flag.
+.It Ev Sy D2_FORCE_APPENDIX
+See --force-appendix flag.
+.It Ev Sy D2_FONT_REGULAR
+See --font-regular flag.
+.It Ev Sy D2_FONT_ITALIC
+See --font-italic flag.
+.It Ev Sy D2_FONT_BOLD
+See --font-bold flag.
+.It Ev Sy D2_FONT_SEMIBOLD
+See --font-semibold flag.
+.It Ev Sy D2_ANIMATE_INTERVAL
+See --animate-interval flag.
+.It Ev Sy D2_TIMEOUT
+See --timeout flag.
+.El
+.Bl -tag -width Ds
+.It Ev Sy DEBUG
+See -d[ebug] flag.
+.It Ev Sy IMG_CACHE
+See --img-cache flag.
+.It Ev Sy HOST
+See -h[ost] flag.
+.It Ev Sy PORT
+See -p[ort] flag.
+.It Ev Sy BROWSER
+See --browser flag.
+.El
 .Sh SEE ALSO
 .Xr d2plugin-tala 1
 .Sh AUTHORS