Difference between revisions of "Sugar Network/Recipe Specification"
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| − | + | == Summary == | |
| − | |||
| − | |||
| − | |||
| − | + | The document describes software specification files format which is a superset on top of the Sugar [[Development_Team/Almanac/Activity_Bundles|activity bundles]] specification. This format is backwards compatible with [[Development_Team/Almanac/Activity_Bundles#.info_file_format|activity.info]] files to make sure that software starts well from the regular Sugar Shell. But the major purpose of introducing new format is supporting software hosted on the [[Sugar Network]]. In particular, new format assumes the following functionality: | |
| − | + | * Support binary based software; | |
| + | * Provide information about software dependencies; | ||
| + | * Introduce stability levels to make it possible (for interested in people) to run development versions using the same, like for stable releases, distribution channel; | ||
| + | * Distribute not only Sugar activities, e.g., software libraries; | ||
| + | * Include all required information to make it possible to reuse the same spec file on different software evolution phases, like, making sources tarball, building binaries on Sugar Labs [[Platform_Team/Open_Build_Service|instance]] of the [http://openbuildservice.org/ Open Build Service], executing. | ||
| − | + | The format is partially based on the [http://0install.net/ Zero Install] [http://0install.net/interface-spec.html specification] since implementation code reuses Zero Install library in order to launch software on users side. | |
| − | == | + | == Spec file locations == |
| − | + | There are two possible spec file locations (staring from the top directory of a distribution bundle): | |
| − | + | * {{Code|/activity/activity.info}}<br>for Sugar activities to make them capable to be launched from the regular Sugar Shell; | |
| + | * {{Code|/sweets.recipe}}<br>in the rest of cases. | ||
| − | + | == Configuration sections == | |
| + | |||
| + | As ''activity.info'' files, new format is based on [[wikipedia:INI_file|INI files]] and should contain at least one of the following sections. | ||
=== Common options === | === Common options === | ||
| − | + | Regardless of the software type, a recipe section (or one of them) should contain the following options. | |
| + | |||
| + | <div id="context"></div> | ||
| + | |||
| + | '''context''' = ''GUID'' | ||
| − | + | Required (but see the [[#.5BActivity.5D|[Activity]]] section). The value which uniquely identifies a software project this particular version implements. This is a Sugar Network [[Platform_Team/Sugar_Network/Objects_model|Context]] GUID. | |
| − | + | <div id="name"></div> | |
| − | ''' | + | '''name''' = ''NAME'' |
| − | + | Optional. Free-form name. (It is equal to the ''implemented'', by default.) | |
| − | + | <div id="summary"></div> | |
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | = | + | '''summary''' = ''ONE_LINE_TEXT'' |
| − | + | Required. Short descriptive line. | |
| − | + | <div id="description"></div> | |
| − | + | '''description''' = ''MULTI_LINE_TEXT'' | |
| − | + | Optional. Long descriptive text. To wrap long text, all lines starting from the second, should start with spaces. This field is equal to ''summary'' by default. | |
| − | + | <div id="license"></div> | |
| − | ''' | + | '''license''' = ''LICENSE'' [; ...] |
| − | Short | + | Required. Short license names. The licenses should conform with the [[Activity Library]] licensing [[Activity_Library/Editors/Policy/Licensing|policy]]. |
| − | + | <div id="homepage"></div> | |
| − | + | '''homepage''' = ''URL'' | |
| − | + | Required. Software project home page. | |
| − | + | <div id="icon"></div> | |
| − | ''' | + | '''icon''' = ''FILENAME'' |
| − | + | Optional (but see the [[#.5BActivity.5D|[Activity]]] section). Path to the icon file starting from the path where the recipe file is located. | |
| − | + | <div id="tags"></div> | |
| − | + | '''tags''' = ''TAG'' [; ...] | |
| − | + | Optional. Tags give more context by which to group the software. This is done to allow users to make search more easily. | |
| − | + | <div id="version"></div> | |
| − | ''' | + | '''version''' = ''VERSION'' |
| − | + | Required. Current version of the software using [[#Version_numbers|special notation]]. Note, to make Sugar activity bundles compatible with pristine Sugar, use a limited format subset supported by the Sugar Shell. | |
| − | + | <div id="stability"></div> | |
| − | + | '''stability''' = ''LEVEL'' | |
| − | + | Required. Stability level of the current version. Values conform to the [[#Software_stability_levels|below list]]. | |
| − | + | <div id="requires"></div> | |
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | '''requires''' = | + | '''requires''' = ''DEPENDENCY'' [; ...] |
| − | List of [[ | + | Optional. List of [[#Dependencies|dependencies]] that should exist at run-time before launching the release. |
| − | + | === [Activity] === | |
| − | + | This section type should be present only in Sugar activities. | |
| − | + | <div id="activity_version"></div> | |
| − | + | '''activity_version''' = ''VERSION'' | |
| − | + | Required. An alias of the ''version'' option. | |
| − | + | <div id="bundle_id"></div> | |
| − | + | '''bundle_id''' = ''BUNDLE_ID'' | |
| − | + | Required. An alias of the ''context'' option. | |
| − | + | <div id="icon"></div> | |
| − | ''' | + | '''icon''' = ''FILENAME_WITHOUT_SUFFIX'' |
| − | + | Required. Behaviour from {{Code|activity.info}} is supported (value should not have a {{Code|.svg}} suffix, and the icon file can be found only in the {{Code|activity}} subdirectory) and, while deprecated, it needs to be used to not break backwards compatibility. For the remaining cases, the regular ''icon'' behaviour should be used instead. | |
| − | + | <div id="activity_exec"></div> | |
| − | |||
| − | |||
| − | + | '''exec''' = ''SHELL_COMMAND'' | |
| − | + | Required. Sugar will pass additional [[Development_Team/Low-level_Activity_API#Command_Line_Arguments| command line arguments]] to this command. | |
| − | + | <div id="mime_types"></div> | |
| − | |||
| − | |||
| − | = | + | '''mime_types''' = ''MIME_TYPE'' [; ...] |
| − | + | Optional. List of mime types supported by the activity. It's used when opening a file from the web, or to present to the user a list of activities that can open a certain Journal object. | |
| − | + | <!-- | |
| + | === [Application] === | ||
| − | + | Application to run outside of Sugar Shell. | |
| − | + | '''exec''' = ''SHELL_COMMAND'' | |
| − | + | Required. The relative path of an executable command inside the implementation that should be executed by default when the sweet is run. Command can have optional arguments. | |
| − | + | === [Library] === | |
| − | ''' | + | '''binding''' = [prepend|append|replace] <variable-name> [<insert-text-to-prepend-variable-value>] [; ...] |
| − | + | Required. The environment variables 0install should export to the process that uses this sweet. | |
| + | --> | ||
| + | === [Archive] === | ||
| − | + | This configuration section makes sense only while building binary distribution bundles from the sources. The section is optional for spec files that describe software assumed to be launched as-is, e.g., ''.xo'' bundles. | |
| − | + | Each ''[Archive]'' section describes one particular binary bundle. There are might be several sections to define binaries for different cases: | |
| − | + | * To save storage space or bandwidth when some bundles will contain any-arch data that are common for all platforms, and another bundle will contain binaries for a particular platform; | |
| + | * Per language bundles, e.g., for media content. | ||
| − | + | All archive sections are named: | |
| − | ''' | + | Archive[:''SUBNAME''] |
| − | + | And contain the following options: | |
| − | + | <div id="archive-include"></div> | |
| − | + | '''include''' = ''GLOB'' [; ...] | |
| − | + | Optional. [[#Glob_patterns|Glob pattern]] for files to include in the archive. By default, all files are assumed. | |
| − | + | <div id="archive-exclude"></div> | |
| − | ''' | + | '''exclude''' = ''GLOB'' [; ...] |
| − | |||
| − | + | Optional. Like the ''include'' option, but used for excluding files from the archive. In addition, various temporary files will be excluded, like ''.bak'' or ''.pyc''. | |
| + | <!-- Not yet implemented | ||
| + | '''langs''' = <lang-name> [; ...] | ||
| + | include[<lang-name>] = <glob-pattern> [; ...] | ||
| + | exclude[<lang-name>] = <glob-pattern> [; ...] | ||
| − | + | Optional. A special form of ''include''/''exclude'' options that are intended to create separate, per locale, archives. If a language is mentioned in the ''langs'' list, but doesn't have any ''include[]''/''exclude[]'' options, ''include''/''exclude'' will be used (in that case, using the special [[#Predefined_constants|LANG]] constant makes sense).--> | |
| − | + | <div id="arch"></div> | |
| − | = | + | '''arch''' = ''ARCH'' |
| − | + | Optional. Makes sense only for binary archives, and can contain: | |
| − | + | * ''all'' for noarch (by default), | |
| + | * ''any'' for binaries to use the current architecture. | ||
| − | + | === [Build] === | |
| − | + | This section is required if software needs additional work in order to prepare a ready-to-use installation. It is important to use [[#Predefined_constants|predefined constants]] for options that contain shell commands. All shell commands will be executed from the {{Code|%(BUILDDIR)s}} directory. | |
| − | + | '''NOTE''' The commands in this section will be executed, not only in the developer's environment, but also in the user's, if a proper binary wasn't found; so move all development-related commands, like {{Code|autogen.sh}}, to the ''[Source]'' section. | |
| − | + | <div id="build-requires"></div> | |
| − | ''' | + | '''requires''' = ''DEPENDENCY'' [; ...] |
| − | + | Optional. This defines what [[#Dependencies|dependencies]] should be present before building the software from sources. Note that common ''requires'' option values are not auto included in the build-time dependencies. | |
| − | + | <div id="clean"></div> | |
| − | + | '''clean''' = ''SHELL_COMMAND'' | |
| − | + | Optional. Cleanup build environment before running ''configure'' command. | |
| − | + | <div id="configure"></div> | |
| − | ''' | + | '''configure''' = ''SHELL_COMMAND'' |
| − | + | Optional. Shell command to configure sources before building, e.g., invoking the configure script in auto-tools-based projects. If the source code does not require a configuration stage, this option could be omitted. | |
| − | + | <div id="build-make"></div> | |
| − | + | '''make''' = ''SHELL_COMMAND'' | |
| − | + | Optional. Shell command to make binaries from sources. If the source code does not require a making stage, this option could be omitted. | |
| − | + | <div id="install"></div> | |
| − | = | + | '''install''' = ''SHELL_COMMAND'' |
| − | If | + | Required. Shell command to place files that are ready for distribution into the {{Code|%(DESTDIR)s}} directory. If ''install'' is missing, the entire {{Code|%(BUILDDIR)s}} (excepting temporary files) will be copied. |
| − | + | === [Source] === | |
| − | + | The section makes sense only while building sources bundles and is a replacement of former ''MANIFEST'' file in Sugar activity bundles. | |
| − | + | <div id="source-exec"></div> | |
| − | + | '''exec''' = ''SHELL_COMMAND'' | |
| − | + | Optional. Execute an external program to create sources tarball. Option might be used, e.g., to run {{Code|make dist}} command. | |
| − | + | <div id="source-include"></div> | |
| − | + | '''include''' = ''GLOB'' [; ...] | |
| − | + | '''exclude''' = ''GLOB'' [; ...] | |
| − | |||
| − | + | Optional. If the ''exec'' option was not used, all files will be bundled and these [[#Glob_patterns|glob patterns]] might be used to reify the selection. | |
| − | + | <div id="source-requires"></div> | |
| − | + | '''requires''' = ''DEPENDENCY'' [; ...] | |
| − | + | Optional. The [[#Dependencies|dependencies]] that should be present before creating sources tarball. For example, if the ''exec'' command generates .c files from .vala, the vala dependency should be mentioned in the ''requires'' option. | |
| − | == Predefined | + | === Predefined constants === |
| − | + | Constants defined within the ''[Build]'' section: | |
| − | * ''BUILDDIR'' where the build happens | + | * ''BUILDDIR'' where the build happens, directory contains un-tarred sources bundle. This variable can be used in ''binding'' options as well. During the local build, it will point environment variables to the root of sources directory. |
| − | + | * ''DESTDIR'' temporary path to place installed files before bundling them | |
| − | * '' | ||
* ''PREFIX'' should be used as installation prefix path, e.g., for {{Code|./configure --prefix}} | * ''PREFIX'' should be used as installation prefix path, e.g., for {{Code|./configure --prefix}} | ||
* ''CFLAGS'' default gcc CFLAGS | * ''CFLAGS'' default gcc CFLAGS | ||
* ''CXXFLAGS'' default gcc CXXFLAGS | * ''CXXFLAGS'' default gcc CXXFLAGS | ||
| − | In sections that contain ''langs'' option: | + | In sections that contain a ''langs'' option: |
* ''LANG'' current language while building per language implementation | * ''LANG'' current language while building per language implementation | ||
| − | + | == Version numbers == | |
| + | |||
| + | A version number string has the following form: | ||
| + | |||
| + | Version := DottedList ("-" Modifier? DottedList?)* | ||
| + | DottedList := (Integer ("." Integer)*) | ||
| + | Modifier := "pre" | "rc" | "post" | ||
| + | |||
| + | Numerically, the modifiers come in the order "-pre" (pre-release), "-rc" (release candidate), "-" (no modifier name), "-post" (post-release or patch level). Versions are ordered like this: | ||
| + | |||
| + | 0.1 | ||
| + | 1 | ||
| + | 1.0 | ||
| + | 1.2-pre | ||
| + | 1.2-pre1 | ||
| + | 1.2-rc1 | ||
| + | 1.2 | ||
| + | 1.2-0 | ||
| + | 1.2-post | ||
| + | 1.2-post1-pre | ||
| + | 1.2-post1 | ||
| + | 1.2.1-pre | ||
| + | 1.2.1.4 | ||
| + | 1.2.2 | ||
| + | 1.2.10 | ||
| + | 3 | ||
| + | |||
| + | == Software stability levels == | ||
| + | |||
| + | The spec file also gives a stability rating for each implementation. The following levels are allowed (must be lowercase in the feed files): | ||
| + | |||
| + | * ''stable'', | ||
| + | * ''testing'', | ||
| + | * ''developer'', | ||
| + | * ''buggy'', | ||
| + | * ''insecure''. | ||
| + | |||
| + | Stability ratings are expected to change over time. When any new release is made, its stability should be set to testing. Users who have selected Help test new versions will then start using it. Other users will continue with the previous stable release. After a while (days, weeks or months, depending on the project) with no serious problems found, the implementation's stability can be changed to stable so that everyone will use it. | ||
| + | |||
| + | If problems are found, it can instead be marked as ''buggy'', or ''insecure'' to avoid selecting these versions while launching on users side. ''developer'' is like a more extreme version of ''testing'', where the program is expected to have bugs. | ||
| + | |||
| + | When to use ''buggy''? Don't mark old releases as buggy every time you do a new release, just because a few bugs have been fixed. People who have selected network connectivity automatically pickup the new version anyway, so marking an older version as ''buggy'' only affects people who have explicitly stated that they don't want to use the latest version, but would prefer to use an older release to save network use. | ||
| − | + | == Dependencies == | |
| − | |||
| − | + | Dependencies might be used to declare software that the current release depends on. | |
| − | + | The format of a dependency string is: | |
| − | + | ''DEPENDENCY'' [(<|<=|=|>=|>) ''VERSION''] | |
| − | + | The ''DEPENDENCY'' value is a GUID associated with dependency project, i.e., ''context'' value from dependency spec file. In general, it might be any software Sugar Network [http://node.sugarlabs.org/context Context], but current implementation assumes only GNU/Linux [http://node.sugarlabs.org/context?type=package packages]. | |
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| − | == | + | == Glob patterns == |
| − | A | + | The ''include'' and ''exclude'' options contain file patterns. A pattern could be of two types: |
| − | + | * doesn't contain ''/'' or ''**'' substrings, will be applied only to file names | |
| − | + | * contains ''/'' or ''**'' substring, will be applied to the full file path (relative to the root), thus could affect several directory levels | |
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| − | + | Only these pattern symbols are allowed: | |
| − | + | * ''*'' matches everything, except directory separator | |
| − | + | * ''?'' matches any single character, except directory separator | |
| − | + | * ''**'' matches everything, including directory separator | |
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Latest revision as of 18:00, 3 July 2013
Summary
The document describes software specification files format which is a superset on top of the Sugar activity bundles specification. This format is backwards compatible with activity.info files to make sure that software starts well from the regular Sugar Shell. But the major purpose of introducing new format is supporting software hosted on the Sugar Network. In particular, new format assumes the following functionality:
- Support binary based software;
- Provide information about software dependencies;
- Introduce stability levels to make it possible (for interested in people) to run development versions using the same, like for stable releases, distribution channel;
- Distribute not only Sugar activities, e.g., software libraries;
- Include all required information to make it possible to reuse the same spec file on different software evolution phases, like, making sources tarball, building binaries on Sugar Labs instance of the Open Build Service, executing.
The format is partially based on the Zero Install specification since implementation code reuses Zero Install library in order to launch software on users side.
Spec file locations
There are two possible spec file locations (staring from the top directory of a distribution bundle):
/activity/activity.info
for Sugar activities to make them capable to be launched from the regular Sugar Shell;/sweets.recipe
in the rest of cases.
Configuration sections
As activity.info files, new format is based on INI files and should contain at least one of the following sections.
Common options
Regardless of the software type, a recipe section (or one of them) should contain the following options.
context = GUID
Required (but see the [Activity] section). The value which uniquely identifies a software project this particular version implements. This is a Sugar Network Context GUID.
name = NAME
Optional. Free-form name. (It is equal to the implemented, by default.)
summary = ONE_LINE_TEXT
Required. Short descriptive line.
description = MULTI_LINE_TEXT
Optional. Long descriptive text. To wrap long text, all lines starting from the second, should start with spaces. This field is equal to summary by default.
license = LICENSE [; ...]
Required. Short license names. The licenses should conform with the Activity Library licensing policy.
homepage = URL
Required. Software project home page.
icon = FILENAME
Optional (but see the [Activity] section). Path to the icon file starting from the path where the recipe file is located.
tags = TAG [; ...]
Optional. Tags give more context by which to group the software. This is done to allow users to make search more easily.
version = VERSION
Required. Current version of the software using special notation. Note, to make Sugar activity bundles compatible with pristine Sugar, use a limited format subset supported by the Sugar Shell.
stability = LEVEL
Required. Stability level of the current version. Values conform to the below list.
requires = DEPENDENCY [; ...]
Optional. List of dependencies that should exist at run-time before launching the release.
[Activity]
This section type should be present only in Sugar activities.
activity_version = VERSION
Required. An alias of the version option.
bundle_id = BUNDLE_ID
Required. An alias of the context option.
icon = FILENAME_WITHOUT_SUFFIX
Required. Behaviour from activity.info is supported (value should not have a .svg suffix, and the icon file can be found only in the activity subdirectory) and, while deprecated, it needs to be used to not break backwards compatibility. For the remaining cases, the regular icon behaviour should be used instead.
exec = SHELL_COMMAND
Required. Sugar will pass additional command line arguments to this command.
mime_types = MIME_TYPE [; ...]
Optional. List of mime types supported by the activity. It's used when opening a file from the web, or to present to the user a list of activities that can open a certain Journal object.
[Archive]
This configuration section makes sense only while building binary distribution bundles from the sources. The section is optional for spec files that describe software assumed to be launched as-is, e.g., .xo bundles.
Each [Archive] section describes one particular binary bundle. There are might be several sections to define binaries for different cases:
- To save storage space or bandwidth when some bundles will contain any-arch data that are common for all platforms, and another bundle will contain binaries for a particular platform;
- Per language bundles, e.g., for media content.
All archive sections are named:
Archive[:SUBNAME]
And contain the following options:
include = GLOB [; ...]
Optional. Glob pattern for files to include in the archive. By default, all files are assumed.
exclude = GLOB [; ...]
Optional. Like the include option, but used for excluding files from the archive. In addition, various temporary files will be excluded, like .bak or .pyc.
arch = ARCH
Optional. Makes sense only for binary archives, and can contain:
- all for noarch (by default),
- any for binaries to use the current architecture.
[Build]
This section is required if software needs additional work in order to prepare a ready-to-use installation. It is important to use predefined constants for options that contain shell commands. All shell commands will be executed from the %(BUILDDIR)s directory.
NOTE The commands in this section will be executed, not only in the developer's environment, but also in the user's, if a proper binary wasn't found; so move all development-related commands, like autogen.sh, to the [Source] section.
requires = DEPENDENCY [; ...]
Optional. This defines what dependencies should be present before building the software from sources. Note that common requires option values are not auto included in the build-time dependencies.
clean = SHELL_COMMAND
Optional. Cleanup build environment before running configure command.
configure = SHELL_COMMAND
Optional. Shell command to configure sources before building, e.g., invoking the configure script in auto-tools-based projects. If the source code does not require a configuration stage, this option could be omitted.
make = SHELL_COMMAND
Optional. Shell command to make binaries from sources. If the source code does not require a making stage, this option could be omitted.
install = SHELL_COMMAND
Required. Shell command to place files that are ready for distribution into the %(DESTDIR)s directory. If install is missing, the entire %(BUILDDIR)s (excepting temporary files) will be copied.
[Source]
The section makes sense only while building sources bundles and is a replacement of former MANIFEST file in Sugar activity bundles.
exec = SHELL_COMMAND
Optional. Execute an external program to create sources tarball. Option might be used, e.g., to run make dist command.
include = GLOB [; ...] exclude = GLOB [; ...]
Optional. If the exec option was not used, all files will be bundled and these glob patterns might be used to reify the selection.
requires = DEPENDENCY [; ...]
Optional. The dependencies that should be present before creating sources tarball. For example, if the exec command generates .c files from .vala, the vala dependency should be mentioned in the requires option.
Predefined constants
Constants defined within the [Build] section:
- BUILDDIR where the build happens, directory contains un-tarred sources bundle. This variable can be used in binding options as well. During the local build, it will point environment variables to the root of sources directory.
- DESTDIR temporary path to place installed files before bundling them
- PREFIX should be used as installation prefix path, e.g., for
./configure --prefix - CFLAGS default gcc CFLAGS
- CXXFLAGS default gcc CXXFLAGS
In sections that contain a langs option:
- LANG current language while building per language implementation
Version numbers
A version number string has the following form:
Version := DottedList ("-" Modifier? DottedList?)*
DottedList := (Integer ("." Integer)*)
Modifier := "pre" | "rc" | "post"
Numerically, the modifiers come in the order "-pre" (pre-release), "-rc" (release candidate), "-" (no modifier name), "-post" (post-release or patch level). Versions are ordered like this:
0.1 1 1.0 1.2-pre 1.2-pre1 1.2-rc1 1.2 1.2-0 1.2-post 1.2-post1-pre 1.2-post1 1.2.1-pre 1.2.1.4 1.2.2 1.2.10 3
Software stability levels
The spec file also gives a stability rating for each implementation. The following levels are allowed (must be lowercase in the feed files):
- stable,
- testing,
- developer,
- buggy,
- insecure.
Stability ratings are expected to change over time. When any new release is made, its stability should be set to testing. Users who have selected Help test new versions will then start using it. Other users will continue with the previous stable release. After a while (days, weeks or months, depending on the project) with no serious problems found, the implementation's stability can be changed to stable so that everyone will use it.
If problems are found, it can instead be marked as buggy, or insecure to avoid selecting these versions while launching on users side. developer is like a more extreme version of testing, where the program is expected to have bugs.
When to use buggy? Don't mark old releases as buggy every time you do a new release, just because a few bugs have been fixed. People who have selected network connectivity automatically pickup the new version anyway, so marking an older version as buggy only affects people who have explicitly stated that they don't want to use the latest version, but would prefer to use an older release to save network use.
Dependencies
Dependencies might be used to declare software that the current release depends on.
The format of a dependency string is:
DEPENDENCY [(<|<=|=|>=|>) VERSION]
The DEPENDENCY value is a GUID associated with dependency project, i.e., context value from dependency spec file. In general, it might be any software Sugar Network Context, but current implementation assumes only GNU/Linux packages.
Glob patterns
The include and exclude options contain file patterns. A pattern could be of two types:
- doesn't contain / or ** substrings, will be applied only to file names
- contains / or ** substring, will be applied to the full file path (relative to the root), thus could affect several directory levels
Only these pattern symbols are allowed:
- * matches everything, except directory separator
- ? matches any single character, except directory separator
- ** matches everything, including directory separator