<h2>SYNOPSIS</h2>
<pre>
- <b>notmuch</b> <b>count</b> [<u>options...</u>] <<u>search-term</u>>...
+ <b>notmuch</b> <b>count</b> [option ...] <<u>search-term</u>> ...
- <b>notmuch</b> <b>dump</b> [ <<u>filename</u>> ] [--] [ <<u>search-term</u>>...]
+ <b>notmuch</b> <b>dump</b> [--gzip] [--format=(batch-tag|sup)] [--output=<<u>file</u>>] [--]
+ [<<u>search-term</u>> ...]
- <b>notmuch</b> <b>search</b> [<u>options</u>...] <<u>search-term</u>>...
+ <b>notmuch</b> <b>reindex</b> [option ...] <<u>search-term</u>> ...
- <b>notmuch</b> <b>show</b> [<u>options</u>...] <<u>search-term</u>>...
+ <b>notmuch</b> <b>search</b> [option ...] <<u>search-term</u>> ...
- <b>notmuch</b> <b>tag</b> +<<u>tag</u>>|-<<u>tag</u>> [...] [--] <<u>search-term</u>>...
+ <b>notmuch</b> <b>show</b> [option ...] <<u>search-term</u>> ...
+
+ <b>notmuch</b> <b>tag</b> +<<u>tag</u>> ... -<<u>tag</u>> [--] <<u>search-term</u>> ...
</pre>
<h2>DESCRIPTION</h2>
<pre>
Several notmuch commands accept a common syntax for search terms.
- The search terms can consist of free-form text (and quoted phrases)
- which will match all messages that contain all of the given
- terms/phrases in the body, the subject, or any of the sender or recipi-
+ The search terms can consist of free-form text (and quoted phrases)
+ which will match all messages that contain all of the given
+ terms/phrases in the body, the subject, or any of the sender or recipi‐
ent headers.
- As a special case, a search string consisting of exactly a single
- asterisk ("*") will match all messages.
+ As a special case, a search string consisting of exactly a single as‐
+ terisk ("*") will match all messages.
+</pre>
- In addition to free text, the following prefixes can be used to force
+<h3> Search prefixes</h3>
+<pre>
+ In addition to free text, the following prefixes can be used to force
terms to match against specific portions of an email, (where <brackets>
- indicate user-supplied values):
+ indicate user-supplied values).
+
+ Some of the prefixes with <regex> forms can be also used to restrict
+ the results to those whose value matches a regular expression (see
+ <b>regex</b>(7)) delimited with //, for example:
+
+ notmuch search 'from:"/bob@.*[.]example[.]com/"'
+
+ <b>body:<word-or-quoted-phrase></b>
+ Match terms in the body of messages.
+
+ <b>from:<name-or-address></b> <b>or</b> <b>from:/<regex>/</b>
+ The <b>from:</b> prefix is used to match the name or address of the
+ sender of an email message.
+
+ <b>to:<name-or-address></b>
+ The <b>to:</b> prefix is used to match the names or addresses of any
+ recipient of an email message, (whether To, Cc, or Bcc).
+
+ <b>subject:<word-or-quoted-phrase></b> <b>or</b> <b>subject:/<regex>/</b>
+ Any term prefixed with <b>subject:</b> will match only text from the
+ subject of an email. Searching for a phrase in the subject is
+ supported by including quotation marks around the phrase, imme‐
+ diately following <b>subject:</b>.
+
+ <b>attachment:<word></b>
+ The <b>attachment:</b> prefix can be used to search for specific file‐
+ names (or extensions) of attachments to email messages.
+
+ <b>mimetype:<word></b>
+ The <b>mimetype:</b> prefix will be used to match text from the con‐
+ tent-types of MIME parts within email messages (as specified by
+ the sender).
+
+ <b>tag:<tag></b> <b>or</b> <b>tag:/<regex>/</b> <b>or</b> <b>is:<tag></b> <b>or</b> <b>is:/<regex>/</b>
+ For <b>tag:</b> and <b>is:</b> valid tag values include <b>inbox</b> and <b>unread</b> by
+ default for new messages added by <a href='../notmuch-new-1/'>notmuch-new</a>(1) as well as any
+ other tag values added manually with <a href='../notmuch-tag-1/'>notmuch-tag</a>(1).
+
+ <b>id:<message-id></b> <b>or</b> <b>mid:<message-id></b> <b>or</b> <b>mid:/<regex>/</b>
+ For <b>id:</b> and <b>mid:</b>, message ID values are the literal contents of
+ the Message-ID: header of email messages, but without the '<',
+ '>' delimiters.
+
+ <b>thread:<thread-id></b>
+ The <b>thread:</b> prefix can be used with the thread ID values that
+ are generated internally by notmuch (and do not appear in email
+ messages). These thread ID values can be seen in the first col‐
+ umn of output from <a href='../notmuch-search-1/'>notmuch-search</a>(1)
+
+ <b>thread:{<notmuch</b> <b>query>}</b>
+ Threads may be searched for indirectly by providing an arbitrary
+ notmuch query in <b>{}</b>. For example, the following returns threads
+ containing a message from mallory and one (not necessarily the
+ same message) with Subject containing the word "crypto".
+
+ % notmuch search 'thread:"{from:mallory}" and thread:"{subject:crypto}"'
+
+ The performance of such queries can vary wildly. To understand
+ this, the user should think of the query <b>thread:{<something>}</b> as
+ expanding to all of the thread IDs which match <b><something></b>; not‐
+ much then performs a second search using the expanded query.
+
+ <b>path:<directory-path></b> <b>or</b> <b>path:<directory-path>/**</b> <b>or</b> <b>path:/<regex>/</b>
+ The <b>path:</b> prefix searches for email messages that are in partic‐
+ ular directories within the mail store. The directory must be
+ specified relative to the top-level maildir (and without the
+ leading slash). By default, <b>path:</b> matches messages in the speci‐
+ fied directory only. The "/**" suffix can be used to match mes‐
+ sages in the specified directory and all its subdirectories re‐
+ cursively. <b>path:""</b> matches messages in the root of the mail
+ store and, likewise, <b>path:**</b> matches all messages.
+
+ <b>path:</b> will find a message if <u>any</u> copy of that message is in the
+ specific directory.
+
+ <b>folder:<maildir-folder></b> <b>or</b> <b>folder:/<regex>/</b>
+ The <b>folder:</b> prefix searches for email messages by maildir or MH
+ folder. For MH-style folders, this is equivalent to <b>path:</b>. For
+ maildir, this includes messages in the "new" and "cur" subdirec‐
+ tories. The exact syntax for maildir folders depends on your
+ mail configuration. For maildir++, <b>folder:""</b> matches the inbox
+ folder (which is the root in maildir++), other folder names al‐
+ ways start with ".", and nested folders are separated by "."s,
+ such as <b>folder:.classes.topology</b>. For "file system" maildir, the
+ inbox is typically <b>folder:INBOX</b> and nested folders are separated
+ by slashes, such as <b>folder:classes/topology</b>.
+
+ <b>folder:</b> will find a message if <u>any</u> copy of that message is in
+ the specific folder.
+
+ <b>date:<since>..<until></b> <b>or</b> <b>date:<date></b>
+ The <b>date:</b> prefix can be used to restrict the results to only
+ messages within a particular time range (based on the Date:
+ header).
+
+ See <b>DATE</b> <b>AND</b> <b>TIME</b> <b>SEARCH</b> below for details on the range expres‐
+ sion, and supported syntax for <since> and <until> date and time
+ expressions.
+
+ The time range can also be specified using timestamps without
+ including the date prefix using a syntax of:
+
+ <initial-timestamp>..<final-timestamp>
+
+ Each timestamp is a number representing the number of seconds
+ since 1970-01-01 00:00:00 UTC. Specifying a time range this way
+ is considered legacy and predates the date prefix.
+
+ <b>lastmod:<initial-revision>..<final-revision></b>
+ The <b>lastmod:</b> prefix can be used to restrict the result by the
+ database revision number of when messages were last modified
+ (tags were added/removed or filenames changed). This is usually
+ used in conjunction with the <b>--uuid</b> argument to <a href='../notmuch-search-1/'>not‐</a>
+ <a href='../notmuch-search-1/'>much-search</a>(1) to find messages that have changed since an ear‐
+ lier query.
+
+ <b>query:<name></b>
+ The <b>query:</b> prefix allows queries to refer to previously saved
+ queries added with <a href='../notmuch-config-1/'>notmuch-config</a>(1).
+
+ <b>property:<key>=<value></b>
+ The <b>property:</b> prefix searches for messages with a particular
+ <key>=<value> property pair. Properties are used internally by
+ notmuch (and extensions) to add metadata to messages. A given
+ key can be present on a given message with several different
+ values. See <a href='../notmuch-properties-7/'>notmuch-properties</a>(7) for more details.
+
+ User defined prefixes are also supported, see <a href='../notmuch-config-1/'>notmuch-config</a>(1) for de‐
+ tails.
+</pre>
- from:<name-or-address>
+<h3> Operators</h3>
+<pre>
+ In addition to individual terms, multiple terms can be combined with
+ Boolean operators (<b>and</b>, <b>or</b>, <b>not</b>, and <b>xor</b>). Each term in the query will
+ be implicitly connected by a logical AND if no explicit operator is
+ provided (except that terms with a common prefix will be implicitly
+ combined with OR). The shorthand '-<term>' can be used for 'not
+ <term>' but unfortunately this does not work at the start of an expres‐
+ sion. Parentheses can also be used to control the combination of the
+ Boolean operators, but will have to be protected from interpretation by
+ the shell, (such as by putting quotation marks around any parenthesized
+ expression).
- to:<name-or-address>
+ In addition to the standard boolean operators, Xapian provides several
+ operators specific to text searching.
- subject:<word-or-quoted-phrase>
+ notmuch search term1 NEAR term2
- attachment:<word>
+ will return results where term1 is within 10 words of term2. The
+ threshold can be set like this:
- tag:<tag> (or is:<tag>)
+ notmuch search term1 NEAR/2 term2
- id:<message-id>
+ The search
- thread:<thread-id>
+ notmuch search term1 ADJ term2
- folder:<directory-path>
+ will return results where term1 is within 10 words of term2, but in the
+ same order as in the query. The threshold can be set the same as with
+ NEAR:
- date:<since>..<until>
+ notmuch search term1 ADJ/7 term2
+</pre>
- The <b>from:</b> prefix is used to match the name or address of the sender of
- an email message.
+<h3> Stemming</h3>
+<pre>
+ <b>Stemming</b> in notmuch means that these searches
- The <b>to:</b> prefix is used to match the names or addresses of any recipient
- of an email message, (whether To, Cc, or Bcc).
+ notmuch search detailed
+ notmuch search details
+ notmuch search detail
- Any term prefixed with <b>subject:</b> will match only text from the subject
- of an email. Searching for a phrase in the subject is supported by
- including quotation marks around the phrase, immediately following <b>sub-</b>
- <b>ject:</b>.
+ will all return identical results, because Xapian first "reduces" the
+ term to the common stem (here 'detail') and then performs the search.
- The <b>attachment:</b> prefix can be used to search for specific filenames (or
- extensions) of attachments to email messages.
+ There are two ways to turn this off: a search for a capitalized word
+ will be performed unstemmed, so that one can search for "John" and not
+ get results for "Johnson"; phrase searches are also unstemmed (see be‐
+ low for details). Stemming is currently only supported for English.
+ Searches for words in other languages will be performed unstemmed.
+</pre>
- For <b>tag:</b> and <b>is:</b> valid tag values include <b>inbox</b> and <b>unread</b> by default
- for new messages added by <b>notmuch</b> <b>new</b> as well as any other tag values
- added manually with <b>notmuch</b> <b>tag</b>.
+<h3> Wildcards</h3>
+<pre>
+ It is possible to use a trailing '*' as a wildcard. A search for
+ 'wildc*' will match 'wildcard', 'wildcat', etc.
+</pre>
- For <b>id:</b>, message ID values are the literal contents of the Message-ID:
- header of email messages, but without the '<', '>' delimiters.
+<h3> Boolean and Probabilistic Prefixes</h3>
+<pre>
+ Xapian (and hence notmuch) prefixes are either <b>boolean</b>, supporting ex‐
+ act matches like "<u>tag:inbox</u>" or <b>probabilistic</b>, supporting a more flexi‐
+ ble <b>term</b> based searching. Certain <b>special</b> prefixes are processed by
+ notmuch in a way not strictly fitting either of Xapian's built in
+ styles. The prefixes currently supported by notmuch are as follows.
- The <b>thread:</b> prefix can be used with the thread ID values that are gen-
- erated internally by notmuch (and do not appear in email messages).
- These thread ID values can be seen in the first column of output from
- <b>notmuch</b> <b>search</b>
+ <b>Boolean</b>
+ <b>tag:</b>, <b>id:</b>, <b>thread:</b>, <b>folder:</b>, <b>path:</b>, <b>property:</b>
- The <b>folder:</b> prefix can be used to search for email message files that
- are contained within particular directories within the mail store. Only
- the directory components below the top-level mail database path are
- available to be searched.
+ <b>Probabilistic</b>
+ <b>body:</b>, <b>to:</b>, <b>attachment:</b>, <b>mimetype:</b>
- The <b>date:</b> prefix can be used to restrict the results to only messages
- within a particular time range (based on the Date: header) with a range
- syntax of:
+ <b>Special</b>
+ <b>from:</b>, <b>query:</b>, <b>subject:</b>
+</pre>
- date:<since>..<until>
+<h3> Terms and phrases</h3>
+<pre>
+ In general Xapian distinguishes between lists of terms and <b>phrases</b>.
+ Phrases are indicated by double quotes (but beware you probably need to
+ protect those from your shell) and insist that those unstemmed words
+ occur in that order. One useful, but initially surprising feature is
+ that the following are equivalent ways to write the same phrase.
- See <b>DATE</b> <b>AND</b> <b>TIME</b> <b>SEARCH</b> below for details on the range expression, and
- supported syntax for <since> and <until> date and time expressions.
+ • "a list of words"
- The time range can also be specified using timestamps with a syntax of:
+ • a-list-of-words
- <initial-timestamp>..<final-timestamp>
+ • a/list/of/words
- Each timestamp is a number representing the number of seconds since
- 1970-01-01 00:00:00 UTC.
+ • a.list.of.words
- In addition to individual terms, multiple terms can be combined with
- Boolean operators ( <b>and</b>, <b>or</b>, <b>not</b> , etc.). Each term in the query will
- be implicitly connected by a logical AND if no explicit operator is
- provided, (except that terms with a common prefix will be implicitly
- combined with OR until we get Xapian defect #402 fixed).
+ Both parenthesised lists of terms and quoted phrases are ok with proba‐
+ bilistic prefixes such as <b>to:</b>, <b>from:</b>, and <b>subject:</b>. In particular
- Parentheses can also be used to control the combination of the Boolean
- operators, but will have to be protected from interpretation by the
- shell, (such as by putting quotation marks around any parenthesized
- expression).
+ subject:(pizza free)
+
+ is equivalent to
+
+ subject:pizza and subject:free
+
+ Both of these will match a subject "Free Delicious Pizza" while
+
+ subject:"pizza free"
+
+ will not.
+</pre>
+
+<h3> Quoting</h3>
+<pre>
+ Double quotes are also used by the notmuch query parser to protect
+ boolean terms, regular expressions, or subqueries containing spaces or
+ other special characters, e.g.
+
+ tag:"a tag"
+
+ folder:"/^.*/(Junk|Spam)$/"
+
+ thread:"{from:mallory and date:2009}"
+
+ As with phrases, you need to protect the double quotes from the shell
+ e.g.
+
+ % notmuch search 'folder:"/^.*/(Junk|Spam)$/"'
+ % notmuch search 'thread:"{from:mallory and date:2009}" and thread:{to:mallory}'
</pre>
<h2>DATE AND TIME SEARCH</h2>
<pre>
- notmuch understands a variety of standard and natural ways of express-
- ing dates and times, both in absolute terms ("2012-10-24") and in rela-
+ notmuch understands a variety of standard and natural ways of express‐
+ ing dates and times, both in absolute terms ("2012-10-24") and in rela‐
tive terms ("yesterday"). Any number of relative terms can be combined
("1 hour 25 minutes") and an absolute date/time can be combined with
relative terms to further adjust it. A non-exhaustive description of
the syntax supported for absolute and relative terms is given below.
+</pre>
- <b>The</b> <b>range</b> <b>expression</b>
-
- date:<since>..<until>
-
- The above expression restricts the results to only messages
- from <since> to <until>, based on the Date: header.
-
- <since> and <until> can describe imprecise times, such as "yes-
- terday". In this case, <since> is taken as the earliest time
- it could describe (the beginning of yesterday) and <until> is
- taken as the latest time it could describe (the end of yester-
- day). Similarly, date:january..february matches from the begin-
- ning of January to the end of February.
+<h3> The range expression</h3>
+<pre>
+ date:<since>..<until>
+
+ The above expression restricts the results to only messages from
+ <since> to <until>, based on the Date: header.
+
+ <since> and <until> can describe imprecise times, such as "yesterday".
+ In this case, <since> is taken as the earliest time it could describe
+ (the beginning of yesterday) and <until> is taken as the latest time it
+ could describe (the end of yesterday). Similarly, date:january..febru‐
+ ary matches from the beginning of January to the end of February.
+
+ If specifying a time range using timestamps in conjunction with the
+ date prefix, each timestamp must be preceded by @ (ASCII hex 40). As
+ above, each timestamp is a number representing the number of seconds
+ since 1970-01-01 00:00:00 UTC. For example:
+ date:@<initial-timestamp>..@<final-timestamp>
+
+ Currently, spaces in range expressions are not supported. You can re‐
+ place the spaces with '_', or (in most cases) '-', or (in some cases)
+ leave the spaces out altogether. Examples in this man page use spaces
+ for clarity.
+
+ Open-ended ranges are supported. I.e. it's possible to specify
+ date:..<until> or date:<since>.. to not limit the start or end time,
+ respectively.
+</pre>
- Currently, we do not support spaces in range expressions. You
- can replace the spaces with '_', or (in most cases) '-', or (in
- some cases) leave the spaces out altogether. Examples in this
- man page use spaces for clarity.
+<h3> Single expression</h3>
+<pre>
+ date:<expr> works as a shorthand for date:<expr>..<expr>. For example,
+ date:monday matches from the beginning of Monday until the end of Mon‐
+ day.
+</pre>
- Open-ended ranges are supported (since Xapian 1.2.1), i.e. it's
- possible to specify date:..<until> or date:<since>.. to not
- limit the start or end time, respectively. Pre-1.2.1 Xapian
- does not report an error on open ended ranges, but it does not
- work as expected either.
+<h3> Relative date and time</h3>
+<pre>
+ [N|number] (years|months|weeks|days|hours|hrs|minutes|mins|sec‐
+ onds|secs) [...]
- Entering date:expr without ".." (for example date:yesterday)
- won't work, as it's not interpreted as a range expression at
- all. You can achieve the expected result by duplicating the
- expr both sides of ".." (for example date:yesterday..yester-
- day).
+ All refer to past, can be repeated and will be accumulated.
- <b>Relative</b> <b>date</b> <b>and</b> <b>time</b>
- [N|number] (years|months|weeks|days|hours|hrs|minutes|mins|sec-
- onds|secs) [...]
+ Units can be abbreviated to any length, with the otherwise ambiguous
+ single m being m for minutes and M for months.
- All refer to past, can be repeated and will be accumulated.
+ Number can also be written out one, two, ..., ten, dozen, hundred. Ad‐
+ ditionally, the unit may be preceded by "last" or "this" (e.g., "last
+ week" or "this month").
- Units can be abbreviated to any length, with the otherwise
- ambiguous single m being m for minutes and M for months.
+ When combined with absolute date and time, the relative date and time
+ specification will be relative from the specified absolute date and
+ time.
- Number can also be written out one, two, ..., ten, dozen, hun-
- dred. Additionally, the unit may be preceded by "last" or
- "this" (e.g., "last week" or "this month").
+ Examples: 5M2d, two weeks
+</pre>
- When combined with absolute date and time, the relative date
- and time specification will be relative from the specified
- absolute date and time.
+<h3> Supported absolute time formats</h3>
+<pre>
+ • H[H]:MM[:SS] [(am|a.m.|pm|p.m.)]
- Examples: 5M2d, two weeks
+ • H[H] (am|a.m.|pm|p.m.)
- <b>Supported</b> <b>absolute</b> <b>time</b> <b>formats</b>
- H[H]:MM[:SS] [(am|a.m.|pm|p.m.)]
+ • HHMMSS
- H[H] (am|a.m.|pm|p.m.)
+ • now
- HHMMSS
+ • noon
- now
+ • midnight
- noon
+ • Examples: 17:05, 5pm
+</pre>
- midnight
+<h3> Supported absolute date formats</h3>
+<pre>
+ • YYYY-MM[-DD]
- Examples: 17:05, 5pm
+ • DD-MM[-[YY]YY]
- <b>Supported</b> <b>absolute</b> <b>date</b> <b>formats</b>
- YYYY-MM[-DD]
+ • MM-YYYY
- DD-MM[-[YY]YY]
+ • M[M]/D[D][/[YY]YY]
- MM-YYYY
+ • M[M]/YYYY
- M[M]/D[D][/[YY]YY]
+ • D[D].M[M][.[YY]YY]
- M[M]/YYYY
+ • D[D][(st|nd|rd|th)] Mon[thname] [YYYY]
- D[D].M[M][.[YY]YY]
+ • Mon[thname] D[D][(st|nd|rd|th)] [YYYY]
- D[D][(st|nd|rd|th)] Mon[thname] [YYYY]
+ • Wee[kday]
- Mon[thname] D[D][(st|nd|rd|th)] [YYYY]
+ Month names can be abbreviated at three or more characters.
- Wee[kday]
+ Weekday names can be abbreviated at three or more characters.
- Month names can be abbreviated at three or more characters.
+ Examples: 2012-07-31, 31-07-2012, 7/31/2012, August 3
+</pre>
- Weekday names can be abbreviated at three or more characters.
+<h3> Time zones</h3>
+<pre>
+ • (+|-)HH:MM
- Examples: 2012-07-31, 31-07-2012, 7/31/2012, August 3
+ • (+|-)HH[MM]
- <b>Time</b> <b>zones</b>
- (+|-)HH:MM
+ Some time zone codes, e.g. UTC, EET.
+</pre>
- (+|-)HH[MM]
+<h2>SEE ALSO</h2>
+<pre>
+ <a href='../notmuch-1/'>notmuch</a>(1), <a href='../notmuch-config-1/'>notmuch-config</a>(1), <a href='../notmuch-count-1/'>notmuch-count</a>(1), <a href='../notmuch-dump-1/'>notmuch-dump</a>(1), <a href='../notmuch-hooks-5/'>not‐</a>
+ <a href='../notmuch-hooks-5/'>much-hooks</a>(5), <a href='../notmuch-insert-1/'>notmuch-insert</a>(1), <a href='../notmuch-new-1/'>notmuch-new</a>(1), <a href='../notmuch-properties-7/'>notmuch-proper‐</a>
+ <a href='../notmuch-properties-7/'>ties</a>(7), <a href='../notmuch-reindex-1/'>notmuch-reindex</a>(1), <a href='../notmuch-reply-1/'>notmuch-reply</a>(1), <a href='../notmuch-restore-1/'>notmuch-restore</a>(1), <a href='../notmuch-search-1/'>not‐</a>
+ <a href='../notmuch-search-1/'>much-search</a>(1), <a href='../notmuch-show-1/'>notmuch-show</a>(1), <a href='../notmuch-tag-1/'>notmuch-tag</a>(1)
+</pre>
- Some time zone codes, e.g. UTC, EET.
+<h2>AUTHOR</h2>
+<pre>
+ Carl Worth and many others
</pre>
-<h2>SEE ALSO</h2>
+<h2>COPYRIGHT</h2>
<pre>
- <a href='../notmuch-1/'>notmuch</a>(1), <a href='../notmuch-config-1/'>notmuch-config</a>(1), <a href='../notmuch-count-1/'>notmuch-count</a>(1), <a href='../notmuch-dump-1/'>notmuch-dump</a>(1), <a href='../notmuch-hooks-5/'>not-</a>
- <a href='../notmuch-hooks-5/'>much-hooks</a>(5), <a href='../notmuch-new-1/'>notmuch-new</a>(1), <a href='../notmuch-reply-1/'>notmuch-reply</a>(1), <a href='../notmuch-restore-1/'>notmuch-restore</a>(1),
- <a href='../notmuch-search-1/'>notmuch-search</a>(1), <a href='../notmuch-show-1/'>notmuch-show</a>(1), <a href='../notmuch-tag-1/'>notmuch-tag</a>(1)
+ 2009-2022, Carl Worth and many others
</pre>
-<h2>Notmuch 0.15</h2>
+<h2>0.35</h2>
projects / notmuch-wiki / blobdiff