Formerly tracing was just log messages with a DEBUG log
level. We now make these things independent. Tracing
can be turned on or off in PandocMonad using `setTrace`;
it is independent of logging.
* Removed `DEBUG` from `Verbosity`.
* Removed `ParserTrace` from `LogMessage`.
* Added `trace`, `setTrace` to `PandocMonad`.
* Added `MissingCharacter` to `LogMessage` in Text.Pandoc.Logging.
* Parse the (xe)latex log for missing character warnings and issue
the warning.
Closes#3742.
This makes it sensitive to proper verbosity settings.
(It is now treated as INFO rather than WARNING, so one
doesn't get these messages for creation of tmp images
while making a pdf.)
API changes:
* Removed extractMediaBag from Text.Pandoc.MediaBag.
* Added Extracting as constructor for LogMessage.
As noted in the previous commit, an autogenerated identifier
may still coincide with an explicit identifier that is given
for a header later in the document, or with an identifier on
a div, span, link, or image. This commit adds a warning
in this case, so users can supply an explicit identifier.
* Added `DuplicateIdentifier` to LogMessage.
* Modified HTML, Org, MediaWiki readers so their custom
state type is an instance of HasLogMessages. This is necessary
for `registerHeader` to issue warnings.
See #1745.
To be used in implementing `\graphicspath` in LaTeX, and possibly
in things like PDF production via context.
Use resource path in fetchItem.
Issue an info message if we get a resource from somewhere other
than ".".
Added UsingResourceFrom to log message.
This now contains the Verbosity definition previously
in Options, as well as a new LogMessage datatype that
will eventually be used instead of raw strings for
warnings.
This will enable us, among other things, to provide
machine-readable warnings if desired.
See #3392.