[Gretl-devel] Re: crash looping through strings array

On Sun, Feb 8, 2026 at 11:43 AM Sven Schreiber <sven.schreiber(a)fu-berlin.de&gt; wrote: > Am 08.02.2026 um 14:39 schrieb Cottrell, Allin: >> On Sun, Feb 8, 2026 at 8:14 AM Sven Schreiber >> <sven.schreiber(a)fu-berlin.de&gt; wrote: >> > Thanks, Allin! One more thought on this, though. As you've no doubt > noticed when you fixed it, this doesn't appear to be related to loops or > strings arrays. Instead here for me the simple following line already > produces the crash: > > <hansl-crash> > string s = "_" ~ 1 > </hansl-crash> Hmm. At some point in 2024 there was an attempt to make string concatenation very flexible: we weren't going to insist on getting two strings as arguments, one of them could be an array of strings or a matrix, or a scalar -- except that the scalar case was not actually supported and led to a crash. In current git I've corrected the scalar case (previously I just made it an error), though I'm not sure the full generality is really wanted. Anyway, here are examples of what you can do: ... ? eval "egg" ~ 1 egg1 Done </gretlcli> In the matrix and scalar case negative values are not accepted, and we use the integer part of non-negative values. That policy is no doubt debatable too.