Add test for multiple Git repositories

xtests/git_both

@@ -0,0 +1,9 @@
+/testcases/git/additions:
+.rw-rw-r-- 20 cassowary  1 Jan 12:34 NM edited
+.rw-rw-r--  0 cassowary  1 Jan 12:34 N- staged
+.rw-rw-r--  0 cassowary  1 Jan 12:34 -N unstaged
+
+/testcases/git/edits:
+.rw-rw-r-- 20 cassowary  1 Jan 12:34 MM both
+.rw-rw-r-- 15 cassowary  1 Jan 12:34 M- staged
+.rw-rw-r-- 20 cassowary  1 Jan 12:34 -M unstaged

xtests/run.sh

@@ -188,8 +188,9 @@ COLUMNS=80 $exa_binary --colour=never     $testcases/file-names-exts | diff -q -
 
 
 # Git
-$exa $testcases/git/additions -l --git 2>&1 | diff -q - $results/git_additions  || exit 1
-$exa $testcases/git/edits     -l --git 2>&1 | diff -q - $results/git_edits      || exit 1
+$exa $testcases/git/additions         -l --git 2>&1 | diff -q - $results/git_additions  || exit 1
+$exa $testcases/git/edits             -l --git 2>&1 | diff -q - $results/git_edits      || exit 1
+$exa $testcases/git/{additions,edits} -l --git 2>&1 | diff -q - $results/git_both       || exit 1
 
 
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