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When showing a message, if the user doesn't specify --decrypt= at all, but a stashed session key is known to notmuch, notmuch should just go ahead and try to decrypt the message with the session key (without bothering the user for access to their asymmetric secret key). The user can disable this at the command line with --decrypt=false if they really don't want to look at the e-mail that they've asked notmuch to show them. and of course, "notmuch show --decrypt" still works for accessing the user's secret keys if necessary.
194 lines
8 KiB
ReStructuredText
194 lines
8 KiB
ReStructuredText
============
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notmuch-show
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============
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SYNOPSIS
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========
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**notmuch** **show** [*option* ...] <*search-term*> ...
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DESCRIPTION
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===========
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Shows all messages matching the search terms.
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See **notmuch-search-terms(7)** for details of the supported syntax for
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<search-terms>.
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The messages will be grouped and sorted based on the threading (all
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replies to a particular message will appear immediately after that
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message in date order). The output is not indented by default, but depth
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tags are printed so that proper indentation can be performed by a
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post-processor (such as the emacs interface to notmuch).
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Supported options for **show** include
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``--entire-thread=(true|false)``
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If true, **notmuch show** outputs all messages in the thread of
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any message matching the search terms; if false, it outputs only
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the matching messages. For ``--format=json`` and
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``--format=sexp`` this defaults to true. For other formats, this
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defaults to false.
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``--format=(text|json|sexp|mbox|raw)``
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**text** (default for messages)
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The default plain-text format has all text-content MIME
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parts decoded. Various components in the output,
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(**message**, **header**, **body**, **attachment**, and MIME
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**part**), will be delimited by easily-parsed markers. Each
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marker consists of a Control-L character (ASCII decimal 12),
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the name of the marker, and then either an opening or
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closing brace, ('{' or '}'), to either open or close the
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component. For a multipart MIME message, these parts will be
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nested.
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**json**
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The output is formatted with Javascript Object Notation
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(JSON). This format is more robust than the text format for
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automated processing. The nested structure of multipart MIME
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messages is reflected in nested JSON output. By default JSON
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output includes all messages in a matching thread; that is,
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by default,
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``--format=json`` sets ``--entire-thread``. The caller can
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disable this behaviour by setting ``--entire-thread=false``.
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The JSON output is always encoded as UTF-8 and any message
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content included in the output will be charset-converted to
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UTF-8.
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**sexp**
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The output is formatted as the Lisp s-expression (sexp)
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equivalent of the JSON format above. Objects are formatted
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as property lists whose keys are keywords (symbols preceded
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by a colon). True is formatted as ``t`` and both false and
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null are formatted as ``nil``. As for JSON, the s-expression
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output is always encoded as UTF-8.
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**mbox**
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All matching messages are output in the traditional, Unix
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mbox format with each message being prefixed by a line
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beginning with "From " and a blank line separating each
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message. Lines in the message content beginning with "From "
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(preceded by zero or more '>' characters) have an additional
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'>' character added. This reversible escaping is termed
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"mboxrd" format and described in detail here:
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http://homepage.ntlworld.com/jonathan.deboynepollard/FGA/mail-mbox-formats.html
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**raw** (default if --part is given)
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Write the raw bytes of the given MIME part of a message to
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standard out. For this format, it is an error to specify a
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query that matches more than one message.
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If the specified part is a leaf part, this outputs the
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body of the part after performing content transfer
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decoding (but no charset conversion). This is suitable for
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saving attachments, for example.
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For a multipart or message part, the output includes the
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part headers as well as the body (including all child
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parts). No decoding is performed because multipart and
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message parts cannot have non-trivial content transfer
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encoding. Consumers of this may need to implement MIME
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decoding and similar functions.
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``--format-version=N``
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Use the specified structured output format version. This is
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intended for programs that invoke **notmuch(1)** internally. If
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omitted, the latest supported version will be used.
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``--part=N``
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Output the single decoded MIME part N of a single message. The
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search terms must match only a single message. Message parts are
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numbered in a depth-first walk of the message MIME structure,
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and are identified in the 'json', 'sexp' or 'text' output
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formats.
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Note that even a message with no MIME structure or a single
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body part still has two MIME parts: part 0 is the whole
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message (headers and body) and part 1 is just the body.
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``--verify``
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Compute and report the validity of any MIME cryptographic
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signatures found in the selected content (ie. "multipart/signed"
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parts). Status of the signature will be reported (currently only
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supported with --format=json and --format=sexp), and the
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multipart/signed part will be replaced by the signed data.
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``--decrypt``
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Decrypt any MIME encrypted parts found in the selected content
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(ie. "multipart/encrypted" parts). Status of the decryption will
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be reported (currently only supported with --format=json and
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--format=sexp) and on successful decryption the
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multipart/encrypted part will be replaced by the decrypted
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content.
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If a session key is already known for the message, then it
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will be decrypted automatically unless the user explicitly
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sets ``--decrypt=false``.
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Decryption expects a functioning **gpg-agent(1)** to provide any
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needed credentials. Without one, the decryption will fail.
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Implies --verify.
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``--exclude=(true|false)``
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Specify whether to omit threads only matching
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search.tag\_exclude from the search results (the default) or
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not. In either case the excluded message will be marked with the
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exclude flag (except when output=mbox when there is nowhere to
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put the flag).
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If --entire-thread is specified then complete threads are
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returned regardless (with the excluded flag being set when
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appropriate) but threads that only match in an excluded message
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are not returned when ``--exclude=true.``
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The default is ``--exclude=true.``
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``--body=(true|false)``
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If true (the default) **notmuch show** includes the bodies of
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the messages in the output; if false, bodies are omitted.
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``--body=false`` is only implemented for the json and sexp
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formats and it is incompatible with ``--part > 0.``
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This is useful if the caller only needs the headers as body-less
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output is much faster and substantially smaller.
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``--include-html``
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Include "text/html" parts as part of the output (currently only
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supported with --format=json and --format=sexp). By default,
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unless ``--part=N`` is used to select a specific part or
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``--include-html`` is used to include all "text/html" parts, no
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part with content type "text/html" is included in the output.
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A common use of **notmuch show** is to display a single thread of email
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messages. For this, use a search term of "thread:<thread-id>" as can be
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seen in the first column of output from the **notmuch search** command.
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EXIT STATUS
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===========
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This command supports the following special exit status codes
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``20``
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The requested format version is too old.
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``21``
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The requested format version is too new.
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SEE ALSO
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========
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**notmuch(1)**,
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**notmuch-config(1)**,
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**notmuch-count(1)**,
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**notmuch-dump(1)**,
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**notmuch-hooks(5)**,
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**notmuch-insert(1)**,
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**notmuch-new(1)**,
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**notmuch-reply(1)**,
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**notmuch-restore(1)**,
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**notmuch-search(1)**,
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**notmuch-search-terms(7)**,
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**notmuch-tag(1)**
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