We use "cannot" and "could not" quite often in source code and error messages:
$ grep .. 'cannot' | wc -l 13180 $ grep ... 'could not' | wc -l 12149 I noticed it by looking for errors about parsing in our /bin tools: src/pl/plperl/ppport.h: die "cannot parse version '$ver'\n"; src/pl/plperl/ppport.h: die "cannot parse version '$ver'\n"; src/bin/pg_upgrade/server.c: pg_fatal("could not parse version file \"%s\"\n", cluster->pgdata); This web page explains the difference well, i.e., "cannot" is present tens, "could not" is past tense: https://www.englishforums.com/English/CannotVsCouldNot/bhprvk/post.htm Is there any sense that we should have more consistency in our message wording? -- Bruce Momjian <br...@momjian.us> https://momjian.us EnterpriseDB https://enterprisedb.com + As you are, so once was I. As I am, so you will be. + + Ancient Roman grave inscription +