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Cleaning deps.
2014-08-07 19:42:41 -04:00
# Miscellaneous auto-load Vim scripts
The vim-misc plug-in contains Vim scripts that are used by most of the [Vim
plug-ins I've written] [plugins] yet don't really belong with any single one of
the plug-ins. Basically it's an extended standard library of Vim script
functions that I wrote during the development of my Vim profile and plug-ins.
In the past these scripts were bundled with each plug-in, however that turned
out to be a maintenance nightmare for me. That's why the miscellaneous scripts
are now a proper plug-in with their own page on Vim Online.
Because the miscellaneous scripts are no longer bundled with my Vim plug-ins,
users are now required to install the miscellaneous scripts separately. This is
unfortunate for users who are upgrading from a previous release that did bundle
the miscellaneous scripts, but I don't see any way around this. Sorry!
## Installation
Unzip the most recent [ZIP archive] [] file inside your Vim profile
directory (usually this is `~/.vim` on UNIX and `%USERPROFILE%\vimfiles` on
Windows), restart Vim and execute the command `:helptags ~/.vim/doc` (use
`:helptags ~\vimfiles\doc` instead on Windows).
If you prefer you can also use [Pathogen] [], [Vundle] [] or a similar tool to
install & update the plug-in using a local clone of the git repository.
## Function documentation
Below is the documentation for the functions included in the miscellaneous
scripts. Anyone is free to use these functions in their own Vim profile and/or
plug-ins. I care about backwards compatibility so won't break it without a good
reason to do so.
For those who are curious: The function descriptions given below were extracted
from the source code of the miscellaneous scripts using the Python module
`vimdoctool.py` included in [vim-tools] [].
<!-- Start of generated documentation -->
The documentation of the 80 functions below was extracted from
15 Vim scripts on July 20, 2013 at 10:41.
### Handling of special buffers
The functions defined here make it easier to deal with special Vim buffers
that contain text generated by a Vim plug-in. For example my [vim-notes
plug-in] [vim-notes] generates several such buffers:
- [:RecentNotes] [RecentNotes] lists recently modified notes
- [:ShowTaggedNotes] [ShowTaggedNotes] lists notes grouped by tags
- etc.
Because the text in these buffers is generated, Vim shouldn't bother with
swap files and it should never prompt the user whether to save changes to
the generated text.
[vim-notes]: http://peterodding.com/code/vim/notes/
[RecentNotes]: http://peterodding.com/code/vim/notes/#recentnotes_command
[ShowTaggedNotes]: http://peterodding.com/code/vim/notes/#showtaggednotes_command
#### The `xolox#misc#buffer#is_empty()` function
Checks if the current buffer is an empty, unchanged buffer which can be
reused. Returns 1 if an empty buffer is found, 0 otherwise.
#### The `xolox#misc#buffer#prepare()` function
Open a special buffer, i.e. a buffer that will hold generated contents,
not directly edited by the user. The buffer can be customized by passing a
dictionary with the following key/value pairs as the first argument:
- **name** (required): The base name of the buffer (i.e. the base name of
the file loaded in the buffer, even though it isn't really a file and
nothing is really 'loaded' :-)
- **path** (required): The pathname of the buffer. May be relevant if
[:lcd] [lcd] or ['autochdir'] [acd] is being used.
[lcd]: http://vimdoc.sourceforge.net/htmldoc/editing.html#:lcd
[acd]: http://vimdoc.sourceforge.net/htmldoc/options.html#'autochdir'
#### The `xolox#misc#buffer#lock()` function
Lock a special buffer so that its contents can no longer be edited.
#### The `xolox#misc#buffer#unlock()` function
Unlock a special buffer so that its content can be updated.
### Tab completion for user defined commands
#### The `xolox#misc#complete#keywords()` function
This function can be used to perform keyword completion for user defined
Vim commands based on the contents of the current buffer. Here's an
example of how you would use it:
:command -nargs=* -complete=customlist,xolox#misc#complete#keywords MyCmd call s:MyCmd(<f-args>)
### String escaping functions
#### The `xolox#misc#escape#pattern()` function
Takes a single string argument and converts it into a [:substitute]
[subcmd] / [substitute()] [subfun] pattern string that matches the given
string literally.
[subfun]: http://vimdoc.sourceforge.net/htmldoc/eval.html#substitute()
[subcmd]: http://vimdoc.sourceforge.net/htmldoc/change.html#:substitute
#### The `xolox#misc#escape#substitute()` function
Takes a single string argument and converts it into a [:substitute]
[subcmd] / [substitute()] [subfun] replacement string that inserts the
given string literally.
#### The `xolox#misc#escape#shell()` function
Takes a single string argument and converts it into a quoted command line
argument.
I was going to add a long rant here about Vim's ['shellslash' option]
[shellslash], but really, it won't make any difference. Let's just suffice
to say that I have yet to encounter a single person out there who uses
this option for its intended purpose (running a UNIX style shell on
Microsoft Windows).
[shellslash]: http://vimdoc.sourceforge.net/htmldoc/options.html#'shellslash'
### Human friendly string formatting for Vim
#### The `xolox#misc#format#pluralize()` function
Concatenate a counter (the first argument, expected to be an integer) with
a singular or plural label (the second and third arguments, both expected
to be strings).
#### The `xolox#misc#format#timestamp()` function
Format a time stamp (a string containing a formatted floating point
number) into a human friendly format, for example 70 seconds is phrased as
"1 minute and 10 seconds".
### List handling functions
#### The `xolox#misc#list#unique()` function
Remove duplicate values from the given list in-place (preserves order).
#### The `xolox#misc#list#binsert()` function
Performs in-place binary insertion, which depending on your use case can
be more efficient than calling Vim's [sort()] [sort] function after each
insertion (in cases where a single, final sort is not an option). Expects
three arguments:
1. A list
2. A value to insert
3. 1 (true) when case should be ignored, 0 (false) otherwise
[sort]: http://vimdoc.sourceforge.net/htmldoc/eval.html#sort()
### Functions to interact with the user
#### The `xolox#misc#msg#info()` function
Show a formatted informational message to the user.
This function has the same argument handling as Vim's [printf()] []
function with one notable difference: Any arguments which are not numbers
or strings are coerced to strings using Vim's [string()] [] function.
In the case of `xolox#misc#msg#info()`, automatic string coercion simply
makes the function a bit easier to use.
[printf()]: http://vimdoc.sourceforge.net/htmldoc/eval.html#printf()
[string()]: http://vimdoc.sourceforge.net/htmldoc/eval.html#string()
#### The `xolox#misc#msg#warn()` function
Show a formatted warning message to the user.
This function has the same argument handling as the
`xolox#misc#msg#info()` function.
#### The `xolox#misc#msg#debug()` function
Show a formatted debugging message to the user, *if the user has enabled
increased verbosity by setting Vim's ['verbose'] [] option to one
(1) or higher*.
This function has the same argument handling as the
`xolox#misc#msg#info()` function.
In the case of `xolox#misc#msg#debug()`, automatic string coercion
provides lazy evaluation in the sense that complex data structures are
only converted to strings when the user has enabled increased verbosity.
['verbose']: http://vimdoc.sourceforge.net/htmldoc/options.html#'verbose'
### Integration between Vim and its environment
#### The `xolox#misc#open#file()` function
Given a pathname or URL as the first argument, this opens the file with
the program associated with the file type. So for example a text file
might open in Vim, an `*.html` file would probably open in your web
browser and a media file would open in a media player.
This should work on Windows, Mac OS X and most Linux distributions. If
this fails to find a file association, you can pass one or more external
commands to try as additional arguments. For example:
:call xolox#misc#open#file('/path/to/my/file', 'firefox', 'google-chrome')
This generally shouldn't be necessary but it might come in handy now and
then.
#### The `xolox#misc#open#url()` function
Given a URL as the first argument, this opens the URL in your preferred or
best available web browser:
- In GUI environments a graphical web browser will open (or a new tab will
be created in an existing window)
- In console Vim without a GUI environment, when you have any of `lynx`,
`links` or `w3m` installed it will launch a command line web browser in
front of Vim (temporarily suspending Vim)
### Vim and plug-in option handling
#### The `xolox#misc#option#get()` function
Expects one or two arguments: 1. The name of a variable and 2. the default
value if the variable does not exist.
Returns the value of the variable from a buffer local variable, global
variable or the default value, depending on which is defined.
This is used by some of my Vim plug-ins for option handling, so that users
can customize options for specific buffers.
#### The `xolox#misc#option#split()` function
Given a multi-value Vim option like ['runtimepath'] [rtp] this returns a
list of strings. For example:
:echo xolox#misc#option#split(&runtimepath)
['/home/peter/Projects/Vim/misc',
'/home/peter/Projects/Vim/colorscheme-switcher',
'/home/peter/Projects/Vim/easytags',
...]
[rtp]: http://vimdoc.sourceforge.net/htmldoc/options.html#'runtimepath'
#### The `xolox#misc#option#join()` function
Given a list of strings like the ones returned by
`xolox#misc#option#split()`, this joins the strings together into a
single value that can be used to set a Vim option.
#### The `xolox#misc#option#split_tags()` function
Customized version of `xolox#misc#option#split()` with specialized
handling for Vim's ['tags' option] [tags].
[tags]: http://vimdoc.sourceforge.net/htmldoc/options.html#'tags'
#### The `xolox#misc#option#join_tags()` function
Customized version of `xolox#misc#option#join()` with specialized
handling for Vim's ['tags' option] [tags].
#### The `xolox#misc#option#eval_tags()` function
Evaluate Vim's ['tags' option] [tags] without looking at the file
system, i.e. this will report tags files that don't exist yet. Expects
the value of the ['tags' option] [tags] as the first argument. If the
optional second argument is 1 (true) only the first match is returned,
otherwise (so by default) a list with all matches is returned.
### Operating system interfaces
#### The `xolox#misc#os#is_mac()` function
Returns 1 (true) when on Mac OS X, 0 (false) otherwise. You would expect
this to simply check the Vim feature list, but for some obscure reason the
`/usr/bin/vim` included in Mac OS X (verified on version 10.7.5) returns 0
(false) in response to `has('mac')`, so we check the output of `uname`
to avoid false negatives.
#### The `xolox#misc#os#is_win()` function
Returns 1 (true) when on Microsoft Windows, 0 (false) otherwise.
#### The `xolox#misc#os#find_vim()` function
Returns the program name of Vim as a string. On Windows and UNIX this just
[v:progname] [] as an absolute pathname while on Mac OS X there is
some special magic to find MacVim's executable even though it's usually
not on the executable search path. If you want, you can override the
value returned from this function by setting the global variable
`g:xolox#misc#os#vim_progname`.
By default the choice of console Vim vs graphical Vim is made based on
the value of [v:progname] [], but if you have a preference you can pass
the string `vim` or `gvim` as the first and only argument.
[v:progname]: http://vimdoc.sourceforge.net/htmldoc/eval.html#v:progname
#### The `xolox#misc#os#exec()` function
Execute an external command (hiding the console on Microsoft Windows when
my [vim-shell plug-in] [vim-shell] is installed).
Expects a dictionary with the following key/value pairs as the first
argument:
- **command** (required): The command line to execute
- **async** (optional): set this to 1 (true) to execute the command in the
background (asynchronously)
- **stdin** (optional): a string or list of strings with the input for the
external command
- **check** (optional): set this to 0 (false) to disable checking of the
exit code of the external command (by default an exception will be
raised when the command fails)
Returns a dictionary with one or more of the following key/value pairs:
- **command** (always available): the generated command line that was used
to run the external command
- **exit_code** (only in synchronous mode): the exit status of the
external command (an integer, zero on success)
- **stdout** (only in synchronous mode): the output of the command on the
standard output stream (a list of strings, one for each line)
- **stderr** (only in synchronous mode): the output of the command on the
standard error stream (as a list of strings, one for each line)
[vim-shell]: http://peterodding.com/code/vim/shell/
#### The `xolox#misc#os#can_use_dll()` function
If a) we're on Microsoft Windows, b) the vim-shell plug-in is installed
and c) the compiled DLL included in vim-shell works, we can use the
vim-shell plug-in to execute external commands! Returns 1 (true)
if we can use the DLL, 0 (false) otherwise.
### Pathname manipulation functions
#### The `xolox#misc#path#which()` function
Scan the executable search path (`$PATH`) for one or more external
programs. Expects one or more string arguments with program names. Returns
a list with the absolute pathnames of all found programs. Here's an
example:
:echo xolox#misc#path#which('gvim', 'vim')
['/usr/local/bin/gvim',
'/usr/bin/gvim',
'/usr/local/bin/vim',
'/usr/bin/vim']
#### The `xolox#misc#path#split()` function
Split a pathname (the first and only argument) into a list of pathname
components.
On Windows, pathnames starting with two slashes or backslashes are UNC
paths where the leading slashes are significant... In this case we split
like this:
- Input: `'//server/share/directory'`
- Result: `['//server', 'share', 'directory']`
Everything except Windows is treated like UNIX until someone has a better
suggestion :-). In this case we split like this:
- Input: `'/foo/bar/baz'`
- Result: `['/', 'foo', 'bar', 'baz']`
To join a list of pathname components back into a single pathname string,
use the `xolox#misc#path#join()` function.
#### The `xolox#misc#path#join()` function
Join a list of pathname components (the first and only argument) into a
single pathname string. This is the counterpart to the
`xolox#misc#path#split()` function and it expects a list of pathname
components as returned by `xolox#misc#path#split()`.
#### The `xolox#misc#path#directory_separator()` function
Find the preferred directory separator for the platform and settings.
#### The `xolox#misc#path#absolute()` function
Canonicalize and resolve a pathname, *regardless of whether it exists*.
This is intended to support string comparison to determine whether two
pathnames point to the same directory or file.
#### The `xolox#misc#path#relative()` function
Make an absolute pathname (the first argument) relative to a directory
(the second argument).
#### The `xolox#misc#path#merge()` function
Join a directory pathname and filename into a single pathname.
#### The `xolox#misc#path#commonprefix()` function
Find the common prefix of path components in a list of pathnames.
#### The `xolox#misc#path#encode()` function
Encode a pathname so it can be used as a filename. This uses URL encoding
to encode special characters.
#### The `xolox#misc#path#decode()` function
Decode a pathname previously encoded with `xolox#misc#path#encode()`.
#### The `xolox#misc#path#is_relative()` function
Returns true (1) when the pathname given as the first argument is
relative, false (0) otherwise.
#### The `xolox#misc#path#tempdir()` function
Create a temporary directory and return the pathname of the directory.
### String handling
#### The `xolox#misc#str#slug()` function
Convert a string to a "slug" - something that can be safely used in
filenames and URLs without worrying about quoting/escaping of special
characters.
#### The `xolox#misc#str#ucfirst()` function
Uppercase the first character in a string (the first argument).
#### The `xolox#misc#str#compact()` function
Compact whitespace in a string (the first argument).
#### The `xolox#misc#str#trim()` function
Trim all whitespace from the start and end of a string (the first
argument).
#### The `xolox#misc#str#indent()` function
Indent all lines in a multi-line string (the first argument) with a
specific number of *space characters* (the second argument, an integer).
#### The `xolox#misc#str#dedent()` function
Remove common whitespace from a multi line string.
### Test runner & infrastructure for Vim plug-ins
The Vim auto-load script `autoload/xolox/misc/test.vim` contains
infrastructure that can be used to run an automated Vim plug-in test suite.
It provides a framework for running test functions, keeping track of the
test status, making assertions and reporting test results to the user.
#### The `xolox#misc#test#reset()` function
Reset counters for executed tests and passed/failed assertions.
#### The `xolox#misc#test#summarize()` function
Print a summary of test results, to be interpreted interactively.
#### The `xolox#misc#test#wrap()` function
Call a function in a try/catch block and prevent exceptions from bubbling.
The name of the function should be passed as the first and only argument;
it should be a string containing the name of a Vim auto-load function.
#### The `xolox#misc#test#passed()` function
Record a test which succeeded.
#### The `xolox#misc#test#failed()` function
Record a test which failed.
#### The `xolox#misc#test#assert_true()` function
Check whether an expression is true.
#### The `xolox#misc#test#assert_equals()` function
Check whether two values are the same.
#### The `xolox#misc#test#assert_same_type()` function
Check whether two values are of the same type.
### Tests for the miscellaneous Vim scripts
The Vim auto-load script `autoload/xolox/misc/tests.vim` contains the
automated test suite of the miscellaneous Vim scripts. Right now the
coverage is not very high yet, but this will improve over time.
#### The `xolox#misc#tests#run()` function
Run the automated test suite of the miscellaneous Vim scripts. To be used
interactively. Intended to be safe to execute irrespective of context.
#### The `xolox#misc#tests#pattern_escaping()` function
Test escaping of regular expression patterns with
`xolox#misc#escape#pattern()`.
#### The `xolox#misc#tests#substitute_escaping()` function
Test escaping of substitution strings with
`xolox#misc#escape#substitute()`.
#### The `xolox#misc#tests#shell_escaping()` function
Test escaping of shell arguments with `xolox#misc#escape#shell()`.
#### The `xolox#misc#tests#making_a_list_unique()` function
Test removing of duplicate values from lists with
`xolox#misc#list#unique()`.
#### The `xolox#misc#tests#binary_insertion()` function
Test the binary insertion algorithm implemented in
`xolox#misc#list#binsert()`.
#### The `xolox#misc#tests#getting_configuration_options()` function
Test getting of scoped plug-in configuration "options" with
`xolox#misc#option#get()`.
#### The `xolox#misc#tests#splitting_of_multi_valued_options()` function
Test splitting of multi-valued Vim options with
`xolox#misc#option#split()`.
#### The `xolox#misc#tests#joining_of_multi_valued_options()` function
Test joining of multi-valued Vim options with `xolox#misc#option#join()`.
#### The `xolox#misc#tests#finding_vim_on_the_search_path()` function
Test looking up Vim's executable on the search path using [v:progname] []
with `xolox#misc#os#find_vim()`.
[v:progname]: http://vimdoc.sourceforge.net/htmldoc/eval.html#v:progname
#### The `xolox#misc#tests#synchronous_command_execution()` function
Test basic functionality of synchronous command execution with
`xolox#misc#os#exec()`.
#### The `xolox#misc#tests#synchronous_command_execution_with_stderr()` function
Test basic functionality of synchronous command execution with
`xolox#misc#os#exec()` including the standard error stream (not available
on Windows when vim-shell is not installed).
#### The `xolox#misc#tests#synchronous_command_execution_with_raising_of_errors()` function
Test raising of errors during synchronous command execution with
`xolox#misc#os#exec()`.
#### The `xolox#misc#tests#synchronous_command_execution_without_raising_errors()` function
Test synchronous command execution without raising of errors with
`xolox#misc#os#exec()`.
#### The `xolox#misc#tests#asynchronous_command_execution()` function
Test the basic functionality of asynchronous command execution with
`xolox#misc#os#exec()`. This runs the external command `mkdir` and tests
that the side effect of creating the directory takes place. This might
seem like a peculiar choice, but it's one of the few 100% portable
commands (Windows + UNIX) that doesn't involve input/output streams.
#### The `xolox#misc#tests#string_case_transformation()` function
Test string case transformation with `xolox#misc#str#ucfirst()`.
#### The `xolox#misc#tests#string_whitespace_compaction()` function
Test compaction of whitespace in strings with `xolox#misc#str#compact()`.
#### The `xolox#misc#tests#string_whitespace_trimming()` function
Test trimming of whitespace in strings with `xolox#misc#str#trim()`.
#### The `xolox#misc#tests#multiline_string_dedent()` function
Test dedenting of multi-line strings with `xolox#misc#str#dedent()`.
#### The `xolox#misc#tests#version_string_parsing()` function
Test parsing of version strings with `xolox#misc#version#parse()`.
#### The `xolox#misc#tests#version_string_comparison()` function
Test comparison of version strings with `xolox#misc#version#at_least()`.
### Timing of long during operations
#### The `xolox#misc#timer#start()` function
Start a timer. This returns a list which can later be passed to
`xolox#misc#timer#stop()`.
#### The `xolox#misc#timer#stop()` function
Show a formatted debugging message to the user, if the user has enabled
increased verbosity by setting Vim's ['verbose'] [verbose] option to one
(1) or higher.
This function has the same argument handling as Vim's [printf()] [printf]
function with one difference: At the point where you want the elapsed time
to be embedded, you write `%s` and you pass the list returned by
`xolox#misc#timer#start()` as an argument.
[verbose]: http://vimdoc.sourceforge.net/htmldoc/options.html#'verbose'
[printf]: http://vimdoc.sourceforge.net/htmldoc/eval.html#printf()
#### The `xolox#misc#timer#force()` function
Show a formatted message to the user. This function has the same argument
handling as Vim's [printf()] [printf] function with one difference: At the
point where you want the elapsed time to be embedded, you write `%s` and
you pass the list returned by `xolox#misc#timer#start()` as an argument.
### Version string handling
#### The `xolox#misc#version#parse()` function
Convert a version string to a list of integers.
#### The `xolox#misc#version#at_least()` function
Check whether the second version string is equal to or greater than the
first version string. Returns 1 (true) when it is, 0 (false) otherwise.
<!-- End of generated documentation -->
## Contact
If you have questions, bug reports, suggestions, etc. the author can be
contacted at <peter@peterodding.com>. The latest version is available at
<http://peterodding.com/code/vim/misc> and <http://github.com/xolox/vim-misc>.
If you like the script please vote for it on [Vim Online] [].
## License
This software is licensed under the [MIT license] [].
© 2013 Peter Odding &lt;<peter@peterodding.com>&gt;.
[MIT license]: http://en.wikipedia.org/wiki/MIT_License
[Pathogen]: http://www.vim.org/scripts/script.php?script_id=2332
[plugins]: http://peterodding.com/code/vim/
[repository]: https://github.com/xolox/vim-misc
[Vim Online]: http://www.vim.org/scripts/script.php?script_id=4597
[vim-tools]: http://peterodding.com/code/vim/tools/
[Vundle]: https://github.com/gmarik/vundle
[ZIP archive]: http://peterodding.com/code/vim/downloads/misc.zip
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