Merge JoinMarket-Org/joinmarket-clientserver#1023: Fix JSON output when stdout is not a terminal

040fb548f0 Fix JSON output when stdout is not a terminal (Kristaps Kaupe)

Pull request description:

  When output is redirected, colourizer is not used, so character replacements aren't needed too.

  Fixes #1022.

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Tree-SHA512: 9096fa6cefca01b5f880929210116a2ff8dbe1004f60eb8e82ff7ad40345457d5d8dcd669d9f5fd0f3499d1882b296f50b0223954fcf3e2ae3bd7b3e05457c02

jmbase/jmbase/support.py

@@ -170,11 +170,12 @@ def jmprint(msg, level="info"):
     if not level in jm_color_map.keys():
         raise Exception("Unsupported formatting")
 
-    # .colorize_message function does a .format() on the string,
-    # which does not work with string-ified json; this should
-    # result in output as intended:
-    msg = msg.replace('{', '{{')
-    msg = msg.replace('}', '}}')
+    if sys.stdout.isatty():
+        # .colorize_message function does a .format() on the string,
+        # which does not work with string-ified json; this should
+        # result in output as intended:
+        msg = msg.replace('{', '{{')
+        msg = msg.replace('}', '}}')
 
     fmtfn = eval(level)
     fmtd_msg = fmtfn(msg)