Description of problem: Evolution badly shows case sensitivity for "View -> All message headers", all the "X-bugzilla-version" and similar header items has capital first letter but everything else are lowercase. However, when you use "View -> Message source" then it is (and this is correct) "X-Bugzilla-Version". Version-Release number of selected component (if applicable): 3.26.6-1.fc27 How reproducible: Always Steps to Reproduce: 1. Look on email with header items (for example from bugzilla) 2. Look on "View -> All message headers" 3. Look on "View -> Message source" 4. Compare results Actual results: The "View -> All message headers" solution shows badly first capital letter only which is not correct. Expected results: The "View -> All message headers" solution should show correct message headers. Additional info: It is really annoying because your filters won't work in case you use the first, broken solution.
Thanks for a bug report. I can confirm that the header names in View->All messages headers and "canonicalized" and looking deeply into this the canonicalization is broken (it was supposed to be a capital letter also after each '-', but there is a bug in the code for it). I'll fix this part. The thing is that the code tries to show the headers nicely, it's not meant to be the same as message source. > It is really annoying because your filters won't work in case you use > the first, broken solution. Are you sure with this, please? Header names are case insensitive and header-related filtering does use case insensitive compare. Do you have an example of the filter where the different case causes an issue? If you do, then it is another bug which should be fixed.
I corrected the the canonize function upstream for 3.29.1+ [1] and 3.28.1+. I keep this open for the filter part. [1] https://git.gnome.org/browse/evolution/commit/?id=24cdb49dd6
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