misspell-fixer Utility to fix common misspellings, typos in source code. There are lots of typical misspellings in program code. Typically they are more eye-catching in the living code but they can …
target[s] can be any file[s] or directory/ies.
Main options:
Performance note: -s, -v or the lack of -n or -r use a slower processing internal loop. So usually -frn without -s and -v are the highest performing combination.
Output control options:
By default only a subset of rules are enabled (around 100). You can enable more rules with the following options:
The processing speed decreases as you activate more rules. But with newer greps this is much less significant.
File filtering options:
Whitelisting files/entries:
Misspell-fixer automatically ignores the issues matching to the patterns listed in .misspell-fixer.ignore or .github/.misspell-fixer.ignore. The format of this file follows the prefiltering's temporary result format:
^filename:line number:matched word
The ignore file is interpreted as a grep exclusion list. It is applied after the prefiltering step as a set of grep expression. So it is possible to exclude any prefixes or more specifically whole files with keeping only their file names:
^filename
Or a directory:
^directory
The entries are listed/matched with the paths based on the current invocation. Reaching the same target with different path from the same working directory will not apply the whitelisted entries generated from the other invocation. In directory x the whitelist entries generated with target . will not be applied for target ../x, although they are the same. There is a workaround for this with manually editing the whitelist to your needs. (Patches are welcome for a more general solution...)
Generally the script tries to return with 0 if there were no typos or errors found/fixed.
Without arguments, the script will not change anything and its output is minimal. Its return value can be used to detect whether it found any typos or not.
$ misspell-fixer target
Fixing the files with displaying each fixed file:
$ misspell-fixer -rv target
Showing only the diffs without modifying the originals:
$ misspell-fixer -sv target
Showing the diffs with progress and fixing the found typos:
$ misspell-fixer -rsv target
Fast mode example, no backups: (highest performance)
$ misspell-fixer -frn target
The previous with all rules enabled:
$ misspell-fixer -frunRVD target
It is based on the following sources for common misspellings:
In some environments the dependencies may cause some trouble. (Mac, Windows, older linux versions.) In this case, you can use misspell-fixer as a docker container image.
Pull the latest version:
$ docker pull vlajos/misspell-fixer
And fix targetdir's content:
$ docker run -ti --rm -v targetdir:/work vlajos/misspell-fixer -frunRVD .
General execution directly with docker:
$ docker run -ti --rm -v targetdir:/work vlajos/misspell-fixer [arguments]
targetdir becomes the current working directory in the container, so you can reference it as . in the arguments list.
You can also use the dockered-fixer wrapper from the source repository:
$ dockered-fixer [arguments]
In case your shell supports functions, you can define a function to make the command a little shorter:
$ function misspell-fixer { docker run -ti --rm -v $(pwd):/work vlajos/misspell-fixer "$@"; }
And fixing with the function:
$ misspell-fixer [arguments]
Through the wrapper and the function it can access only the folders below the current working directory as it is the only one passed to the container as a volume.
You can build the container locally, although this should not be really needed:
$ docker build . -t misspell-fixer
There's a GitHub Action https://github.com/sobolevn/misspell-fixer-action to run misspell-fixer as well. It can even send PRs automatically with the fixes.
The script itself is just a misspelling database and some glue in bash between grep and sed. grep's -F combined with sed's line targeting makes the script quite efficient. -F enables parallel pattern matching with the Aho–Corasick algorithm https://en.wikipedia.org/wiki/Aho%E2%80%93Corasick_algorithm . Unfortunately only the newer (2.28+) versions of grep supports -w properly.
A little more comprehensive list:
https://github.com/vlajos/misspell-fixer
Feel free to use!