Path: csiph.com!3.us.feeder.erje.net!feeder.erje.net!news.linkpendium.com!news.linkpendium.com!panix!usenet.stanford.edu!not-for-mail From: Clint Hepner Newsgroups: gnu.bash.bug Subject: Tilde expansion in assignment-like context Date: Mon, 6 Aug 2018 15:09:59 -0400 Lines: 50 Approved: bug-bash@gnu.org Message-ID: NNTP-Posting-Host: lists.gnu.org Mime-Version: 1.0 (Mac OS X Mail 10.3 \(3273\)) Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: quoted-printable X-Trace: usenet.stanford.edu 1533582608 5155 208.118.235.17 (6 Aug 2018 19:10:08 GMT) X-Complaints-To: action@cs.stanford.edu To: bug-bash@gnu.org Envelope-to: bug-bash@gnu.org DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:content-transfer-encoding:mime-version:subject:message-id:date :to; bh=+E0HFCFsDDIMjmxnHor3Jj+2sLPqoVN+GZNnOLE0Tko=; b=GXxU7zC6NV1ewb9tdomHZjGPFSuDcfM7YsPQG0eIlygA6m0WBmWMtiiEx1zMFBjkSs s2a/xNbb4CzEI6UkrnnkBysVnljbKhJ0YLwea3p2nt/Sodw7CyeE24WrQiHQZIxfQ215 2Oabgx28LcDvNmmQEriBwmGkMYhQUjFo+ZfFOjly8i1TdMR8ixDaouxQUxh5Y89P3Iq5 9m/iH4WWIVNcDaHS7t8ZBRGGqeMCwedOOF431TYxreYWEGdQ9XpqT9GmAhfDYnTDP7M9 0vLJOHZKj0bEImcZBhxdQYbgbqAYV/zXhfR5tPTE3W27gTtPWa/BiNSznqZAnRDitIqb 66CA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:content-transfer-encoding:mime-version :subject:message-id:date:to; bh=+E0HFCFsDDIMjmxnHor3Jj+2sLPqoVN+GZNnOLE0Tko=; b=P74ULbbydZ1rElCvYawcHB2aYoOGoZaWCaBIXxBXBBJnnRTAf8IzaJzvP1ugDxi8Gr 6ooofqMMzJxs7rS6i8ezSNmJicz3vuN1HZSc2P8S6axpayxi40rYRw7aOxizh+TjwZwI Ht+nKJX4ezbo5DF4T2ZrFMxsYZvxfnwWrTc9/C6jDhQbK1YmSbCddDTuvuM09k+fW4+i q0goOkG7lcso20ITNANsQv1kc4b1V+UloP4TNuUHpLUwiq0H/kyCyoqllRwABihnEMAR asz5RfICh6mESjuQ0s1+7YO6UjnXEDXrRRshZJg736CkJA2/R2VXU+eG+R4LEbw4slah Bxcw== X-Gm-Message-State: AOUpUlF4eJ9j7gov3hzGJr+mFWu1YCgDPYQAU4kKF24R+itkRKIkbx9y qLjLj0nmf2txzF6a7QqmfN9UuhEG X-Google-Smtp-Source: AAOMgpce0spXziLWYSrnkblp3IaUmm2dBlHcXphO1wrCNEGkcuUrRMhY8AIhDJgULhJ8FDVwb0Juyg== X-Received: by 2002:a37:30d5:: with SMTP id w204-v6mr14887420qkw.317.1533582601884; Mon, 06 Aug 2018 12:10:01 -0700 (PDT) X-Mailer: Apple Mail (2.3273) X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2607:f8b0:400d:c09::22d X-BeenThere: bug-bash@gnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: Bug reports for the GNU Bourne Again SHell List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Xref: csiph.com gnu.bash.bug:14451 Configuration Information [Automatically generated, do not change]: Machine: x86_64 OS: darwin16.7.0 Compiler: clang Compilation CFLAGS: -DPROGRAM=3D'bash' -DCONF_HOSTTYPE=3D'x86_64' = -DCONF_OSTYPE=3D'd\ arwin16.7.0' -DCONF_MACHTYPE=3D'x86_64-apple-darwin16.7.0' = -DCONF_VENDOR=3D'apple' \ -DLOCALEDIR=3D'/usr/local/Cellar/bash/4.4.19/share/locale' = -DPACKAGE=3D'bash' -DSHE\ LL -DHAVE_CONFIG_H -DMACOSX -I. -I. -I./include -I./lib -I./lib/intl = -I/priv\ ate/tmp/bash-20180209-55597-111ek7c/bash-4.4/lib/intl = -DSSH_SOURCE_BASHRC -Wno\ -parentheses -Wno-format-security uname output: Darwin hemma.local 16.7.0 Darwin Kernel Version 16.7.0: = Thu Jun 2\ 1 20:07:39 PDT 2018; root:xnu-3789.73.14~1/RELEASE_X86_64 x86_64 Machine Type: x86_64-apple-darwin16.7.0 Bash Version: 4.4 Patch Level: 19 Release Status: release Description: A non-initial unquoted tilde is expanded outside of an = assignment. This was raised as a question on Stack Overflow, = https://stackoverflow.com/q/51713759/1126841. Repeat-By: =20 $ set +k $ echo home_dir=3D~ home_dir=3D/Users/chepner A similar string that does not start with a valid identifier leaves the = tilde unexpanded. $ echo --home_dir=3D~ --home_dir=3D~ The behavior is also present in commit = 057a9fbdb4d9ad01b000743fcea9918b80823afc, bash-20180803 snapshot. Fix: [Description of how to fix the problem. If you don't know a fix for the problem, don't include this section.]=