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Overview
Comment:Improve grep documentation
Timelines: family | ancestors | descendants | both | trunk
Files: files | file ages | folders
SHA3-256:4af31f11bb6473f4508b75097aa868d2b3964aafc8531101afcdda7a576c4f8f
User & Date: andygoth 2018-11-08 02:38:24
Context
2018-11-09
19:18
Merged login-on-post branch to trunk check-in: c0e384cf60 user: wyoung tags: trunk
18:52
The "New Thread" button in /forum is no longer restricted to those with forum write capability: if you lack it, we now send you to the login page instead. Without this, users without the capability to post are left looking in through the window of a building without obvious doors. This change pairs especially nicely with the self-registration ... check-in: cdb7f3b988 user: wyoung tags: login-on-post
2018-11-08
02:38
Improve grep documentation check-in: 4af31f11bb user: andygoth tags: trunk
2018-11-07
12:04
When running a bisect, show the span between the two extremes and the number of steps remaining after each step. check-in: b45dd1c7b5 user: drh tags: trunk
Changes

Changes to www/grep.md.

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| `X?`    | zero or one occurrences of X
| `X{p,q}`| between p and q occurrences of X, inclusive
| `(X)`   | match X
| <tt>X\|Y</tt>| X or Y
| `^X`    | X occurring at the beginning of a line
| `X$`    | X occurring at the end of a line
| `.`     | Match any single character
| `\c`    | Character `c` where `c` is one of <tt>{}()[]\|\*+?.</tt>
| `\c`    | C-language escapes for `c` in `afnrtv`.  ex: `\t` or `\n`
| `\uXXXX`| Where XXXX is exactly 4 hex digits, Unicode value XXXX
| `\xXX`  | Where XX is exactly 2 hex digits, Unicode value XX
| `[abc]` | Any single character from the set `abc`
| `[^abc]`| Any single character not in the set `abc`
| `[a-z]` | Any single character in the range `a-z`
| `[^a-z]`| Any single character not in the range `a-z`
| `\b`    | Word boundary
| `\w`    | Word character: `[A-Za-z0-9_]`
| `\W`    | Non-word character
| `\d`    | Digit
| `\D`    | Non-digit
| `\s`    | Whitespace character
| `\S`    | Non-whitespace character

There are several restrictions in Fossil `grep` relative to a fully
POSIX compatible regular expression engine. Among them are:

*   There is currently no support for POSIX character classes such as
    `[:lower:]`.








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| `X?`    | zero or one occurrences of X
| `X{p,q}`| between p and q occurrences of X, inclusive
| `(X)`   | match X
| <tt>X\|Y</tt>| X or Y
| `^X`    | X occurring at the beginning of a line
| `X$`    | X occurring at the end of a line
| `.`     | Match any single character
| `\c`    | Character `c` where `c` is one of <tt>{}()[]\|\*+?.\\</tt>
| `\c`    | C-language escapes for `c` in `afnrtv`.  ex: `\t` or `\n`
| `\uXXXX`| Where XXXX is exactly 4 hex digits, Unicode value XXXX
| `\xXX`  | Where XX is exactly 2 hex digits, Unicode value XX
| `[abc]` | Any single character from the set `abc`
| `[^abc]`| Any single character not in the set `abc`
| `[a-z]` | Any single character in the range `a-z`
| `[^a-z]`| Any single character not in the range `a-z`
| `\b`    | Word boundary
| `\w`    | Word character: `[A-Za-z0-9_]`
| `\W`    | Non-word character: `[^A-Za-z0-9_]`
| `\d`    | Digit: `[0-9]`
| `\D`    | Non-digit: `[^0-9]`
| `\s`    | Whitespace character: `[ \t\r\n\v\f]`
| `\S`    | Non-whitespace character: `[^ \t\r\n\v\f]`

There are several restrictions in Fossil `grep` relative to a fully
POSIX compatible regular expression engine. Among them are:

*   There is currently no support for POSIX character classes such as
    `[:lower:]`.

Changes to www/mkindex.tcl.

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  fileformat.wiki {Fossil File Format}
  fiveminutes.wiki {Up and Running in 5 Minutes as a Single User}
  forum.wiki {Fossil Forums}
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  fossil-from-msvc.wiki {Integrating Fossil in the Microsoft Express 2010 IDE}
  fossil-v-git.wiki {Fossil Versus Git}
  globs.md {File Name Glob Patterns}

  hacker-howto.wiki {Hacker How-To}
  hashpolicy.wiki {Hash Policy: Choosing Between SHA1 and SHA3-256}
  /help {Lists of Commands and Webpages}
  hints.wiki {Fossil Tips And Usage Hints}
  index.wiki {Home Page}
  inout.wiki {Import And Export To And From Git}
  makefile.wiki {The Fossil Build Process}







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  fiveminutes.wiki {Up and Running in 5 Minutes as a Single User}
  forum.wiki {Fossil Forums}
  foss-cklist.wiki {Checklist For Successful Open-Source Projects}
  fossil-from-msvc.wiki {Integrating Fossil in the Microsoft Express 2010 IDE}
  fossil-v-git.wiki {Fossil Versus Git}
  globs.md {File Name Glob Patterns}
  grep.md {Fossil grep vs POSIX grep}
  hacker-howto.wiki {Hacker How-To}
  hashpolicy.wiki {Hash Policy: Choosing Between SHA1 and SHA3-256}
  /help {Lists of Commands and Webpages}
  hints.wiki {Fossil Tips And Usage Hints}
  index.wiki {Home Page}
  inout.wiki {Import And Export To And From Git}
  makefile.wiki {The Fossil Build Process}

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<li><a href="blockchain.md"><b>Fossil As Blockchain</b></a></li>
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<li><a href="whyusefossil.wiki">You Should Use Fossil &mdash; Why</a></li>
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