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5ad292328a
Use clang/clang++'s own autocompletion support to complete arguments. It is rather convoluted as clang generates autocompletions for a portion of the current token rather than the entire token, e.g. while `--st` will autocomplete to `--std=` (which is fine by fish), `--std=g` will autocomplete to `gnu...` without the leading `--std=` which breaks fish' support for the completion. Additionally, on systems where clang/clang++ is the system compiler (such as FreeBSD), it is very often for users to invoke a newer version of clang/clang++ installed as clang[++]-NN instead of clang. Using a monkey-patched version of `complete -p` to support that without breaking (future) completions for commands like `clang-format`. Closes #4174.
17 lines
854 B
Fish
17 lines
854 B
Fish
# This function is compatible with clang, clang++, and variations thereof, and is shared
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# by clang.fish and clang++.fish.
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# We dynamically query the head at `(commandline -o)[1]` to get the correct completions.
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function __fish_clang_complete
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# If the result is for a value, clang only prints the value, so completions
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# for `-std=` print `c++11` and not `-std=c++11` like we need. See #4174.
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set -l prefix (commandline -ct | string replace -fr -- '^(.*=)[^=]*' '$1')
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# Don't hard-code the name of the clang binary
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set -l clang (commandline -o)[1]
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# first get the completions from clang, with the prefix separated from the value by a comma
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$clang --autocomplete=(commandline -ct | string replace -- "$prefix" "$prefix,") 2>/dev/null |
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# and put it in a format that fish understands
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string replace -r -- '^([^ ]+)\s*(.*)' "$prefix\$1\t\$2"
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end
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