Bash translates path parameter in Unix format to windows format, need a way to suppress it

[igormukhin]

MSYSGIT version: 2.6.4

If I run the following command in git-bash terminal on my windows pc:

docker run -ti --rm -v "/c/Users/igor/Documents/Mikogo4:/app" buildpack-deps:jessie bash

bash thinks I used paths in Unix format, so it translates them to windows format which is unwanted in this case, and I get the error:

invalid value "C:\\Users\\igor\\Documents\\Mikogo4;C:\\software\\Git\\app" for flag -v

Is there is a way to suppress the automatic path translation?

[davidovich]

Add a / to suppress translation:

docker run -ti --rm -v "//c/Users/igor/Documents/Mikogo4://app

Note that you'll need to double the container path also.
On Sat, Dec 19, 2015 at 17:27 Igor Mukhin notifications@github.com wrote:

MSYSGIT version: 264

If I run the following command in git-bash terminal on my windows pc:

docker run -ti --rm -v "/c/Users/igor/Documents/Mikogo4:/app" buildpack-deps:jessie bash

bash thinks I used paths in Unix format, so it translates them to windows
format which is unwanted in this case, and I get the error:

invalid value "C:\Users\igor\Documents\Mikogo4;C:\software\Git\app" for flag -v

Is there is a way to suppress the automatic path translation?

—
Reply to this email directly or view it on GitHub
#577.

[dscho]

MSYSGIT

Nope. MSYSGIT is almost certainly not what you think it is. What you refer to is Git for Windows.

docker run -ti --rm -v "/c/Users/igor/Documents/Mikogo4:/app" buildpack-deps:jessie bash

bash thinks I used paths in Unix format

From the release notes' known issues:

• If you specify command-line options starting with a slash, POSIX-to-Windows path conversion will kick in converting e.g. "/usr/bin/bash.exe" to "C:\Program Files\Git\usr\bin\bash.exe". When that is not desired -- e.g. "--upload-pack=/opt/git/bin/git-upload-pack" or "-L/regex/" -- you need to set the environment variable MSYS_NO_PATHCONV temporarily, like so:

MSYS_NO_PATHCONV=1 git blame -L/pathconv/ msys2_path_conv.cc

Alternatively, you can double the first slash to avoid POSIX-to-Windows path conversion.

[chefren]

If you require the argument to have a starting "/" then the workaround fails, MSYS2 has an option for this, but it's another tool :(

[s100]

@dsco Apologies for dredging up such an ancient issue but this isn't working for me. I have just installed the latest Git for Windows from https://git-scm.com/download/win, I open a fresh window,

$ node -e "console.log(process.argv)" -- /a/b/c
[ 'C:\\Program Files\\nodejs\\node.exe', 'A:/b/c' ]

$ MSYS_NO_PATHCONV=1 node -e 'console.log(process.argv)' -- /a/b/c
[ 'C:\\Program Files\\nodejs\\node.exe', 'A:/b/c' ]

What am I missing? I can't put a leading slash on the front, and this is not a path. I need to pass the six-character string "/a/b/c" as an argument to my script, unaltered. I saw elsewhere to try MSYS2_ARG_CONV_EXCL="*" but that had no effect either:

$ set -f MSYS2_ARG_CONV_EXC="*"

$ echo $MSYS2_ARG_CONV_EXC
*

$ node -e "console.log(process.argv)" -- /a/b/c
[ 'C:\\Program Files\\nodejs\\node.exe', 'A:/b/c' ]

[dscho]

@dsco

Almost, but not quite.

$ MSYS_NO_PATHCONV=1 node -e 'console.log(process.argv)' -- /a/b/c

It seems that node being a Bash alias makes this method fail (or maybe it is the winpty.exe program that ignores MSYS_NO_PATHCONV). Try with node.exe instead of node.

[dscho]

$ set -f MSYS2_ARG_CONV_EXC="*"

You don't set environment variables that way in Bash, skip the set -f. Also, note that MSYS2_ARG_CONV_EXCL is spelled with a trailing L: https://github.com/git-for-windows/msys2-runtime/blob/87cc056b5c531ba998a83bccdacc8dee2bac15ef/winsup/cygwin/spawn.cc#L290

[s100]

It seems that node being a Bash alias makes this method fail (or maybe it is the winpty.exe program that ignores MSYS_NO_PATHCONV). Try with node.exe instead of node.

$ alias
alias ll='ls -l'
alias ls='ls -F --color=auto --show-control-chars'
alias node='winpty node.exe'

$ winpty -- echo /a/b/c
A:/b/c

$ MSYS_NO_PATHCONV=1 node.exe -e "console.log(process.argv)" -- /a/b/c
[ 'C:\\Program Files\\nodejs\\node.exe', '/a/b/c' ]

Astounding. It was the alias I was missing. Thank you.

[ehillis]

Try
export MSYS_NO_PATHCONV=1
in a separate command then run your other commands, and / should not be converted