Relative path for style.scss leads to "Internal Error: File to read not found or unreadable" error.

[aliakseimaniuk]

After update from 3.4.1 version to 3.4.7 version, we noticed that sassc.exe for Windows stopped to recognize the relative path to style.scss file.

During build process we receive an error:
Internal Error: File to read not found or unreadable: C:/project/tools/../scss/style.scss

Project structure:

project
|-- bin
     |-- sassc_3.4.7_windows_amd64.exe
|-- scss
     |-- style.scss
|-- static
     |-- style.css
|-- tools
     |-- build.cmd

The code from project's build file:

SET tools_dir=%~dp0
SET root=%tools_dir%..
SET bin=%root%\bin

for %%f in (%bin%\sassc*%PROCESSOR_ARCHITECTURE%.exe) do SET sassc=%%f

SET sassc_input=%root%\scss\style.scss
SET sassc_output=%root%\static\style.css
SET sassc_style=nested

ECHO Building scss ...
%sassc% --style %sassc_style% %sassc_input% %sassc_output% || ECHO ERROR while launching %sassc%. && EXIT /B 1
ECHO Build scss finished.

[dtvn]

My version is v3.7.0 run on Alpine image for Docker also encounters this bug.

The screenshot is just for demonstrate the problem. This bug has been tested many time within may difference dir location.

It also doesn't for single file or full path.

Do you have any solution for this bug?