FAQ on argparse value with leading minus

eclipse-sumo · Mar 13, 2024 · 0362110 · 0362110
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diff --git a/docs/web/docs/FAQ.md b/docs/web/docs/FAQ.md
@@ -1178,6 +1178,12 @@ Under windows these settings must be configured using `regedit` i.e. at the regi
   3 compatibility for [sumolib](Tools/Sumolib.md) and
   [traci](TraCI/Interfacing_TraCI_from_Python.md) however.
 
+### The tool fails when adding an argument with a leading minus sign
+
+  Many of our tools use an argument parser to gather further command line arguments.
+  As the option names usually start with a leading minus, the parser gets confused whether your input is 
+  an option or the corresponding value. In this case try the `--option=value` syntax.
+
 ### tools fail with an ImportError
 
   Make sure to set the environment variable SUMO_HOME to point at the