diff options
author | Jeff King <peff@peff.net> | 2021-08-27 21:30:15 +0300 |
---|---|---|
committer | Junio C Hamano <gitster@pobox.com> | 2021-08-27 22:43:22 +0300 |
commit | fd680bc5586ab7c846e03e181e033dbc36cc7d5d (patch) | |
tree | 462addef547639e3f1ad2b15e04b799229cdb305 /Documentation | |
parent | 225bc32a989d7a22fa6addafd4ce7dcd04675dbf (diff) |
logmsg_reencode(): warn when iconv() fails
If the user asks for a pretty-printed commit to be converted (either
explicitly with --encoding=foo, or implicitly because the commit is
non-utf8 and we want to convert it), we pass it through iconv(). If that
fails, we fall back to showing the input verbatim, but don't tell the
user that the output may be bogus.
Let's add a warning to do so, along with a mention in the documentation
for --encoding. Two things to note about the implementation:
- we could produce the warning closer to the call to iconv() in
reencode_string_len(), which would let us relay the value of errno.
But this is not actually very helpful. reencode_string_len() does
not know we are operating on a commit, and indeed does not know that
the caller won't produce an error of its own. And the errno values
from iconv() are seldom helpful (iconv_open() only ever produces
EINVAL; perhaps EILSEQ from iconv() might be illuminating, but it
can also return EINVAL for incomplete sequences).
- if the reason for the failure is that the output charset is not
supported, then the user will see this warning for every commit we
try to display. That might be ugly and overwhelming, but on the
other hand it is making it clear that every one of them has not been
converted (and the likely outcome anyway is to re-try the command
with a supported output encoding).
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'Documentation')
-rw-r--r-- | Documentation/pretty-options.txt | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/Documentation/pretty-options.txt b/Documentation/pretty-options.txt index 27ddaf84a1..42b227bc40 100644 --- a/Documentation/pretty-options.txt +++ b/Documentation/pretty-options.txt @@ -40,7 +40,9 @@ people using 80-column terminals. defaults to UTF-8. Note that if an object claims to be encoded in `X` and we are outputting in `X`, we will output the object verbatim; this means that invalid sequences in the original - commit may be copied to the output. + commit may be copied to the output. Likewise, if iconv(3) fails + to convert the commit, we will output the original object + verbatim, along with a warning. --expand-tabs=<n>:: --expand-tabs:: |