v.util: add diff tool color support detection (tested on linux and fr…

…eebsd) (#21244)
vlang · Apr 10, 2024 · 48800d4 · 48800d4
1 parent b832b96
commit 48800d4
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/vlib/v/util/diff/diff.v b/vlib/v/util/diff/diff.v
@@ -38,6 +38,11 @@ pub fn find_working_diff_command() !string {
 			return error('could not find specified VDIFF_TOOL ${diffcmd}')
 		}
 		if p.exit_code == 0 { // success
+			if diffcmd in ['gdiff', 'diff'] {
+				if p.output.contains('GNU diffutils') && env_diffopts == '' {
+					return '${diffcmd} --color=always'
+				}
+			}
 			if diffcmd in ['code', 'code.cmd'] {
 				// there is no guarantee that the env opts exist
 				// or include `-d`, so (harmlessly) add it