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nix search: explicitly handle empty search string, fixes

This is important since this is given as an example.
Other patterns containing "empty search string" will still
be handled differently on different platforms ("asdf|")
but that's less of an issue.
This commit is contained in:
Will Dietz 2018-02-25 16:38:13 -06:00
parent 3cac8734ac
commit 009cf9cd23

View file

@ -78,6 +78,11 @@ struct CmdSearch : SourceExprCommand, MixJSON
{
settings.readOnlyMode = true;
// Empty search string should match all packages
// Use "^" here instead of ".*" due to differences in resulting highlighting
// (see #1893 -- libc++ claims empty search string is not in POSIX grammar)
if (re.empty()) re = "^";
std::regex regex(re, std::regex::extended | std::regex::icase);
auto state = getEvalState();