Fix gz_bridge gets wrong world name when GZ_VERBOSE=1

[TheotimeBalaguer]

Solved Problem

In simulation, with env. var. GZ_VERBOSE=1 and a Gazebo world is already running, GZBridge fails to start because it gets the wrong name for the running world. This is because the grep command used retrieve only the first occurrence of "/world/.*/clock" and thus, it gets Topic: [@/theotime-Precision-5570:theotime@/world/multicopter/clock] instead of the real name of the topic /world/multicopter/clock.

Fixes #{21727}

Solution

• Grep only the lines that start with /world/.*/clock, which is the case

Changelog Entry

no need

Alternatives

Gazebo's API has a "Name" endpoint for worlds, admittedly it could be cleaner to exploit that. The grep tech could create more issues in the future.

Test coverage

• tested on my machine. Works with GZ_VERBOSE=0 and 1. The name of world is correctly found.

Context

N/A

[beniaminopozzan]

Thanks @TheotimeBalaguer !

The grep tech could create more issues in the future.

True! But we can merge this for now!