Date: Mon, 28 Feb 2022 07:31:24 +0000 From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 46441] sh(1): Does not support PS1, PS2, PS4 parameter expansion Message-ID: <bug-46441-227-j8nEzV92Ah@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-46441-227@https.bugs.freebsd.org/bugzilla/> References: <bug-46441-227@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D46441 --- Comment #11 from Nathaniel Barragan <contact@nathanielbarragan.xyz> --- I took a look at the code super fast (not planning on any changes yet), and= it seems that command substitution was not added on $PS1/PS2 because the parser relies on PS1 and PS2 not doing command substitution on those variables. Fr= om what it seems, the parser would need to be redone to become re-entrant. Thi= s is because it has some state stored in static global variables, which are clea= red each parse. A possible solution, and one that frankly doesn't sound fun would be to fig= ure out which variables are the ones that hold state local to parsing, and which are really required to be static and global, and move these state-keeping variables to a structure, then pass that structure to each parsing function. --=20 You are receiving this mail because: You are the assignee for the bug.=
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