diff options
| author | Peter Stephenson <pws@zsh.org> | 2016-09-06 09:42:33 +0100 |
|---|---|---|
| committer | Peter Stephenson <pws@zsh.org> | 2016-09-06 09:42:33 +0100 |
| commit | fe3a63fa6cdffa020e380d3e27cf0eb8f3b46b1f (patch) | |
| tree | 57c9d2effcaf3fa6638dcecff492b2bd4e058f60 /Src/builtin.c | |
| parent | 33a8a6f86cd63a1daf845b269f6c56ea477c891e (diff) | |
| download | zsh-fe3a63fa6cdffa020e380d3e27cf0eb8f3b46b1f.tar.gz zsh-fe3a63fa6cdffa020e380d3e27cf0eb8f3b46b1f.tar.xz zsh-fe3a63fa6cdffa020e380d3e27cf0eb8f3b46b1f.zip | |
39181: Add PM_SINGLE and use for compstate.
This flags that compstate (or any other special) can only have a single instance and an attempt to create a new one is an error. Given the very fiddly semantics of compstate any other usage seems pointless. No investigation yet of other variables that could use this. Note it's still possible to hide such variables; only instances that keep the special nature are affected.
Diffstat (limited to 'Src/builtin.c')
| -rw-r--r-- | Src/builtin.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/Src/builtin.c b/Src/builtin.c index da453000c..3b82c9e7f 100644 --- a/Src/builtin.c +++ b/Src/builtin.c @@ -2266,6 +2266,10 @@ typeset_single(char *cname, char *pname, Param pm, UNUSED(int func), zerrnam(cname, "%s: restricted", pname); return pm; } + if (pm->node.flags & PM_SINGLE) { + zerrnam(cname, "%s: can only have a single instance", pname); + return pm; + } /* * For specials, we keep the same struct but zero everything. * Maybe it would be easier to create a new struct but copy |