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https://github.com/fish-shell/fish-shell
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bd18736ee5
Using bare vars is more efficient because it makes the builtin `math` expression cache more useful. That's because if you prefix each var with a dollar-sign then the fish parser expands it before `math` is run. Something like `math x + 1` can be cached since the expression is the same each time it is run. But if you do `math $x + 1` and x==1 then you're effectively executing `math 1 + 1`. And if x==2 the next time then you're running `math 2 + 1`. Which makes the expression cache much less effective.
23 lines
954 B
Fish
23 lines
954 B
Fish
# Define the default debugging prompt command.
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function fish_breakpoint_prompt --description "A right prompt to be used when `breakpoint` is executed"
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set -l saved_status $status
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set -l function (status -L0 function)
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set -l line (status -L0 line-number)
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# At the moment we don't include the filename because, even if we truncate it, it makes the
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# prompt too long.
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#set -l filename (status filename)
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#set -l prompt "$filename:$function:$line >"
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set -l prompt "$function:$line"
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if test $saved_status -ne 0
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set prompt "$prompt [!$saved_status]"
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end
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set prompt "$prompt > "
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# Make sure the prompt doesn't consume more than half the terminal width.
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set -l max_len (math COLUMNS / 2)
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if test (string length -- $prompt) -gt $max_len
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set prompt ...(string sub -s -(math max_len - 3) -- $prompt)
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end
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echo -ns (set_color $fish_color_status) "BP $prompt" (set_color normal) ' '
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end
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