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Gracefully handle +ivy-tasks match errors

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When trying to use +ivy-tasks in one of my projects it was failing w/ error:
`(Stack overflow in regexp matcher)`. This was due to ripgrep searching a folder
in the project root containing a minified bootstrap CSS source map file (which
had a `TODO:` in it). Since that file was a single line of text concatenated
together, the regex was getting passed ~540KB of text.

To make it easier to recognize what is causing +ivy-tasks to fail I wrapped the
failing code in `condition-case-unless-debug` and report the error and the file
causing the error using `message!`. So now if there is a failure during the
extraction of task from the search cmd's results it moves onto the next and
alerts the user in separate pop-up.

To avoid including the bootstrap file in the ripgrep search result, I added a
`.ignore` file to the project that tells `rg` to ignore it.

NOTE: I was surprised that this problem file was include in the ivy-tasks search
because I expected the search to respect projectile ignore settings. Respecting
projectile's ignored/unignored files and directories wouldn't be too difficult
considering projectile provides a robust collection of functions to help support
this. Also projectile's `projectile-ag` function is a great reference.
This commit is contained in:
Brandon Orther 2017-08-14 23:37:17 -07:00
parent e1f7efdf1d
commit e07972cffb
1 changed files with 11 additions and 5 deletions
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16
modules/completion/ivy/autoload/ivy.el
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@ -110,11 +110,17 @@ If WORKSPACE-ONLY-P (universal arg), limit to buffers in the current workspace."
(save-match-data (save-match-data
(cl-loop with out = (shell-command-to-string cmd) (cl-loop with out = (shell-command-to-string cmd)
for x in (and out (split-string out "\n" t)) for x in (and out (split-string out "\n" t))
when (string-match when (condition-case-unless-debug ex
(concat "^\\([^:]+\\):\\([0-9]+\\):.+\\(" (string-match
(string-join task-tags "\\|") (concat "^\\([^:]+\\):\\([0-9]+\\):.+\\("
"\\):?\\s-*\\(.+\\)") (string-join task-tags "\\|")
x) "\\):?\\s-*\\(.+\\)")
x)
(error
(message! (red "Error matching task in file: (%s) %s"
(error-message-string ex)
(car (split-string x ":"))))
nil))
collect `((type . ,(match-string 3 x)) collect `((type . ,(match-string 3 x))
(desc . ,(match-string 4 x)) (desc . ,(match-string 4 x))
(file . ,(match-string 1 x)) (file . ,(match-string 1 x))