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2020-08-21ident: say whose identity is missing when giving user.name hintLibravatar Junio C Hamano1-1/+12
If `user.name` and `user.email` have not been configured and the user invokes: git commit --author=... without specifying the committer identity, then Git errors out with a message asking the user to configure `user.name` and `user.email` but doesn't tell the user which attribution was missing. This can be confusing for a user new to Git who isn't aware of the distinction between user, author, and committer. Give such users a bit more help by extending the error message to also say which attribution is expected. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-02-23ident: do not ignore empty config name/emailLibravatar Jeff King1-0/+11
When we read user.name and user.email from a config file, they go into strbufs. When a caller asks ident_default_name() for the value, we fallback to auto-detecting if the strbuf is empty. That means that explicitly setting an empty string in the config is identical to not setting it at all. This is potentially confusing, as we usually accept a configured value as the final value. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-02-23ident: reject all-crud ident nameLibravatar Jeff King1-0/+5
An ident name consisting of only "crud" characters (like whitespace or punctuation) is effectively the same as an empty one, because our strbuf_addstr_without_crud() will remove those characters. We reject an empty name when formatting a strict ident, but don't notice an all-crud one because our check happens before the crud-removal step. We could skip past the crud before checking for an empty name, but let's make it a separate code path, for two reasons. One is that we can give a more specific error message. And two is that unlike a blank name, we probably don't want to kick in the fallback-to-username behavior. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-02-23ident: handle NULL email when complaining of empty nameLibravatar Jeff King1-0/+20
If we see an empty name, we complain about and mention the matching email in the error message (to give it some context). However, the "email" pointer may be NULL here if we were planning to fill it in later from ident_default_email(). This was broken by 59f929596 (fmt_ident: refactor strictness checks, 2016-02-04). Prior to that commit, we would look up the default name and email before doing any other actions. So one solution would be to go back to that. However, we can't just do so blindly. The logic for handling the "!email" condition has grown since then. In particular, looking up the default email can die if getpwuid() fails, but there are other errors that should take precedence. Commit 734c7789a (ident: check for useConfigOnly before auto-detection of name/email, 2016-03-30) reordered the checks so that we prefer the error message for useConfigOnly. Instead, we can observe that while the name-handling depends on "email" being set, the reverse is not true. So we can simply set up the email variable first. This does mean that if both are bogus, we'll complain about the email before the name. But between the two, there is no reason to prefer one over the other. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>