git-gui: fix detection of Cygwin

MSys2 might *look* like Cygwin, but it is *not* Cygwin... Unless it is run with `MSYSTEM=MSYS`, that is. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Pat Thoyts <patthoyts@users.sourceforge.net> Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
git-for-windows · Nov 9, 2016 · 13c556f · 13c556f
1 parent d130c4c
commit 13c556f
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/git-gui/git-gui.sh b/git-gui/git-gui.sh
@@ -275,6 +275,10 @@ proc is_Cygwin {} {
 				set _iscygwin 0
 			} else {
 				set _iscygwin 1
+				# Handle MSys2 which is only cygwin when MSYSTEM is MSYS.
+				if {[info exists ::env(MSYSTEM)] && $::env(MSYSTEM) ne "MSYS"} {
+					set _iscygwin 0
+				}
 			}
 		} else {
 			set _iscygwin 0