Not connecting when label have "_"

[Hildo Guillardi Júnior]

I am using the last Nightly and some time ago I haven't this issue. Now, some wire that I label with the "_" character in the name get no connection in the PCB.

I am sending a project to reproduce it. The by the "UART_RX" label.

Application: KiCad
Version: 5.99.0-unknown-16f4958~86~ubuntu16.04.1, release build
Libraries:
    wxWidgets 3.0.2
    libcurl/7.47.0 OpenSSL/1.0.2g zlib/1.2.8 libidn/1.32 librtmp/2.3
Platform: Linux 4.4.0-161-generic x86_64, 64 bit, Little endian, wxGTK
Build Info:
    wxWidgets: 3.0.2 (wchar_t,wx containers,compatible with 2.8) GTK+ 2.24
    Boost: 1.58.0
    OpenCASCADE Community Edition: 6.8.0
    Curl: 7.47.0
    Compiler: GCC 5.4.0 with C++ ABI 1009

Build settings:
    KICAD_SCRIPTING=ON
    KICAD_SCRIPTING_MODULES=ON
    KICAD_SCRIPTING_PYTHON3=OFF
    KICAD_SCRIPTING_WXPYTHON=ON
    KICAD_SCRIPTING_WXPYTHON_PHOENIX=OFF
    KICAD_SCRIPTING_ACTION_MENU=ON
    BUILD_GITHUB_PLUGIN=ON
    KICAD_USE_OCE=ON
    KICAD_USE_OCC=OFF
    KICAD_SPICE=ON

[Michael Kavanagh (michaelkavanagh)]

@Hildo, it's been a while since you reported this. Is this still an issue in the latest nightlies?

[Hildo Guillardi Júnior (hildogjr)]

Yes, today's Nightly.
The strange is that this project is the same that I used to test and report lp:1825532
I don't know if this related with the "_" character or hierarchical blocks. I just asked in the question session if the connector algorithmic with question about "_" but it got expired.

Application: KiCad
Version: 5.99.0-unknown-c3175b4~86~ubuntu16.04.1, release build
Libraries:
    wxWidgets 3.0.2
    libcurl/7.47.0 OpenSSL/1.0.2g zlib/1.2.8 libidn/1.32 librtmp/2.3
Platform: Linux 4.4.0-165-generic x86_64, 64 bit, Little endian, wxGTK
Build Info:
    Build date: Oct 3 2019 11:48:52
    wxWidgets: 3.0.2 (wchar_t,wx containers,compatible with 2.8) GTK+ 2.24
    Boost: 1.58.0
    OpenCASCADE Community Edition: 6.8.0
    Curl: 7.47.0
    Compiler: GCC 5.4.0 with C++ ABI 1009

Build settings:
    KICAD_SCRIPTING=ON
    KICAD_SCRIPTING_MODULES=ON
    KICAD_SCRIPTING_PYTHON3=OFF
    KICAD_SCRIPTING_WXPYTHON=ON
    KICAD_SCRIPTING_WXPYTHON_PHOENIX=OFF
    KICAD_SCRIPTING_ACTION_MENU=ON
    BUILD_GITHUB_PLUGIN=ON
    KICAD_USE_OCE=ON
    KICAD_USE_OCC=OFF
    KICAD_SPICE=ON

[Jeff Young (jeyjey)]

@Hildo, can you give me some steps. I'm not exactly sure what problem you're reporting. Thanks!

[Hildo Guillardi Júnior (hildogjr)]

In the above attached project I have the "UART_TX" and "UART_RX" nets that connect two hierarchical sheets through a bus.
Synchronizing the PCB, the "UART_RX" should connect the 72 pin of CNN2101 with the P9.13 of M2801.

Observation:
Check that the VIA close to the 72 pin of the CNN2101 got the NET name "/High level processor/UART_RX", that is a hierarchical name, and all the track just got "/UART_RX".
Previous Nightly version worked fine, when we work to fix some bus net issues, so this new was introduced after.
I tried to change manually but, the "/UART_RX" is not listed the the NET of Track & Via Properties.

I still using the last avaliable Nithly for Ubuntu 16.04
Version: 5.99.0-unknown-c3175b4~86~ubuntu16.04.1, release build

But will can not test the fix until fix lp:1847683

[Jeff Young (jeyjey)]

Ahh... this is the bus issue (which I don't think has anything to do with the "_" in the netname).

[jean-pierre charras (jp-charras)]

I am thinking has something to do with the "_" in the netname.

Strangely, if you replace "_" by (for instance) "x", it works, at least the last time I tried it.