Merge pull request #1052 from alixander/browser-flag

browser flag

ci/release/changelogs/next.md

@@ -4,6 +4,7 @@
 
 #### Improvements 🧹
 
+- `--browser` flag on CLI controls `BROWSER` environment variable for not opening browser in watch mode. [#1052](https://github.com/terrastruct/d2/pull/1052)
 - `elk` layout containers no longer overlap the label with children. [#1055](https://github.com/terrastruct/d2/pull/1055)
 - `<title>` attribute of HTML in watch mode is the base file name, instead of the whole path. [#1054](https://github.com/terrastruct/d2/pull/1054)
 

ci/release/template/man/d2.1

@@ -83,6 +83,9 @@ Center the SVG in the containing viewbox, such as your browser screen
 .It Fl -pad Ar 100
 Pixels padded around the rendered diagram
 .Ns .
+.It Fl -browser Ar true
+Browser executable that watch opens. Setting to 0 opens no browser
+.Ns .
 .It Fl l , -layout Ar dagre
 Set the diagram layout engine to the passed string. For a list of available options, run
 .Ar layout

d2cli/main.go

@@ -83,6 +83,7 @@ func Run(ctx context.Context, ms *xmain.State) (err error) {
 	if err != nil {
 		return err
 	}
+	browserFlag := ms.Opts.String("BROWSER", "browser", "", "", "browser executable that watch opens. Setting to 0 opens no browser.")
 	centerFlag, err := ms.Opts.Bool("D2_CENTER", "center", "c", false, "center the SVG in the containing viewbox, such as your browser screen")
 	if err != nil {
 		return err
@@ -130,6 +131,9 @@ func Run(ctx context.Context, ms *xmain.State) (err error) {
 	if *debugFlag {
 		ms.Env.Setenv("DEBUG", "1")
 	}
+	if *browserFlag != "" {
+		ms.Env.Setenv("BROWSER", *browserFlag)
+	}
 
 	var inputPath string
 	var outputPath string