Created attachment 261246 [details] [review]
GVariant: add way to print context of parse errors

This was a feature intended from the very beginning that somehow never
got written.  It's a way to replace these sort of error messages out of
the GVariant parser:

  1-2,10-15:unable to find a common type

with something in the style of the Vala compiler:

  unable to find a common type:
    [1, 2, 3, 'str']
     ^        ^^^^^

Created attachment 261247 [details] [review]
gsettings tool: print GVariant errors in context

Use g_variant_parse_error_print_context() to format the error message
from the GVariant parser.

Created attachment 261249 [details] [review]
gapplication(1): print GVariant errors in context

Use g_variant_parse_error_print_context() to format the error message
from the GVariant parser.

Created attachment 261255 [details] [review]
gdbus tool: print GVariant errors in context

Use g_variant_parse_error_print_context() to format the error message
from the GVariant parser.

There is a slightly dubious interaction with the "parse me harder"
functionality here.  We're probably going to have to deal with that
separately.

Review of attachment 261247 [details] [review]:

looks good to me

Review of attachment 261246 [details] [review]:

ok

Review of attachment 261249 [details] [review]:

ok

Review of attachment 261255 [details] [review]:

ok

Attachment 261246 [details] pushed as 56fb675 - GVariant: add way to print context of parse errors
Attachment 261247 [details] pushed as 420f90d - gsettings tool: print GVariant errors in context
Attachment 261249 [details] pushed as 94a89f6 - gapplication(1): print GVariant errors in context
Attachment 261255 [details] pushed as ee5dab6 - gdbus tool: print GVariant errors in context