bliss

commit ffb88123943eaa3bc84303049b5e24e130c8e749
parent 58f66ce4ce481106242ccbb6e39ac3d95d8edeb3
Author: phoebos <ben@bvnf.space>
Date:   Mon, 31 Jul 2023 13:41:31 +0100

utils.capture: return nil if cmd failed

Diffstat:
M
bliss/utils.lua
 | 
4
+++-

1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/bliss/utils.lua b/bliss/utils.lua
@@ -269,13 +269,15 @@ function run_quiet(path, cmd, env, logfile)
     end
 end
 
--- Returns an array of lines printed by cmd
+-- If cmd fails, return nil. Otherwise, return an array of lines
+-- printed by cmd.
 function capture(cmd)
     local p = io.popen(cmd, "r")
     local res = {}
     for line in p:lines() do
         table.insert(res, line)
     end
+    if not p:close() then return nil end
     return res
 end