git-bash-tee

A sample app to demonstrate an issue with new git bash and tee [Windows]

Tested with

• 1.9.5.msysgit.0 -> works as expected
• 2.5.1.windows.1 -> fails hard, occasionally the execution just freezes during postinstall task
• 2.5.2.windows.2 -> fails hard

The minimal case when I can reproduce the issue:

• Have a bash script which tries to pipe the output to a file with tee
• Call npm install in the script
• Call a gulp task in the script

Having a postinstall task in package.json leads to some additional issues. Slight variations depending on whether calling a gulp task (gulp test) or a node script (node build.js). On 2.5.1 the postinstall task freezes occasionally (reminds me of this git-for-windows/git#227).

If commenting out tee from the end of the install.sh, things work as expected everywhere:

$ ./install.sh
Starting install...
==============
Running npm install...
npm WARN package.json [email protected] No repository field.

> [email protected] postinstall C:\data\harri\tiedostot\Projektit\Muut\temp\git-bash-tee
> node build.js

Hello from build.js
==============
Running gulp task...
[22:26:27] Using gulpfile C:\data\harri\tiedostot\Projektit\Muut\temp\git-bash-tee\gulpfile.js
[22:26:27] Starting 'test'...
Hello from gulp!
[22:26:27] Finished 'test' after 52 μs
==============
Installed!

Most often with 2.5.2:

• postinstall task leads to a failing assertion
• EINVAL when tee enabled

$ ./install.sh
Starting install...
==============
Running npm install...
npm WARN package.json [email protected] No repository field.

> [email protected] postinstall C:\data\harri\tiedostot\Projektit\Muut\temp\git
-bash-tee
> node build.js


Assertion failed: ((handle))->activecnt >= 0, file src\win\pipe.c, line 1430
==============
Running gulp task...
[22:24:19]
Error: write EINVAL
    at errnoException (net.js:904:11)
    at Socket._write (net.js:645:26)
    at doWrite (_stream_writable.js:226:10)
    at writeOrBuffer (_stream_writable.js:216:5)
    at Socket.Writable.write (_stream_writable.js:183:11)
    at Socket.write (net.js:615:40)
    at Object.module.exports [as log] (C:\Users\Harri\AppData\Roaming\npm\node_modules\gulp\node_modules\gulp-util\lib\log.js:6:18)
    at Liftoff.handleArguments (C:\Users\Harri\AppData\Roaming\npm\node_modules\gulp\bin\gulp.js:117:9)
    at Liftoff.<anonymous> (C:\Users\Harri\AppData\Roaming\npm\node_modules\gulp\node_modules\liftoff\index.js:192:16)
    at module.exports (C:\Users\Harri\AppData\Roaming\npm\node_modules\gulp\node_modules\liftoff\node_modules\flagged-respawn\index.js:17:3)
==============
Installed!