The + is not allowed on NTFS filesystems. Even if the MSYS2 make/bash we use to build Git for Windows can work around it, it is not necessary. Johannes Schindelin (1): Avoid illegal filenames when building Documentation on NTFS Documentation/Makefile | 88 +++++++++++++++++++++--------------------- 1 file changed, 44 insertions(+), 44 deletions(-) base-commit: aa25c82427ae70aebf3b8f970f2afd54e9a2a8c6 Published-As: https://github.com/gitgitgadget/git/releases/tag/pr-216%2Fdscho%2Fmingw-avoid-illegal-filenames-v1 Fetch-It-Via: git fetch https://github.com/gitgitgadget/git pr-216/dscho/mingw-avoid-illegal-filenames-v1 Pull-Request: https://github.com/gitgitgadget/git/pull/216 -- gitgitgadget